diff --git a/src/test/regress/expected/columnar_copyto.out b/src/test/regress/expected/columnar_copyto.out
index e26e4df63..8b96317f0 100644
--- a/src/test/regress/expected/columnar_copyto.out
+++ b/src/test/regress/expected/columnar_copyto.out
@@ -6,7 +6,8 @@ CREATE TABLE test_contestant(handle TEXT, birthdate DATE, rating INT,
         USING columnar;
 -- load table data from file
 \set contestants_1_csv_file :abs_srcdir '/data/contestants.1.csv'
-COPY test_contestant FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_contestant FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 -- export using COPY table TO ...
 COPY test_contestant TO STDOUT;
 a	01-10-1990	2090	97.1	XA 	{a}
diff --git a/src/test/regress/expected/columnar_data_types.out b/src/test/regress/expected/columnar_data_types.out
index 497747817..1ab83e6a7 100644
--- a/src/test/regress/expected/columnar_data_types.out
+++ b/src/test/regress/expected/columnar_data_types.out
@@ -9,7 +9,8 @@ SET intervalstyle TO 'POSTGRES_VERBOSE';
 CREATE TABLE test_array_types (int_array int[], bigint_array bigint[],
 	text_array text[]) USING columnar;
 \set array_types_csv_file :abs_srcdir '/data/array_types.csv'
-COPY test_array_types FROM :'array_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_array_types FROM ' :'array_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 SELECT * FROM test_array_types;
         int_array         |                bigint_array                | text_array
 ---------------------------------------------------------------------
@@ -23,7 +24,8 @@ CREATE TABLE test_datetime_types (timestamp timestamp,
 	timestamp_with_timezone timestamp with time zone, date date, time time,
 	interval interval) USING columnar;
 \set datetime_types_csv_file :abs_srcdir '/data/datetime_types.csv'
-COPY test_datetime_types FROM :'datetime_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_datetime_types FROM ' :'datetime_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 SELECT * FROM test_datetime_types;
       timestamp      | timestamp_with_timezone |    date    |   time   | interval
 ---------------------------------------------------------------------
@@ -50,7 +52,8 @@ SELECT * FROM test_enum_and_composite_types;
 CREATE TABLE test_range_types (int4range int4range, int8range int8range,
 	numrange numrange, tsrange tsrange) USING columnar;
 \set range_types_csv_file :abs_srcdir '/data/range_types.csv'
-COPY test_range_types FROM :'range_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_range_types FROM ' :'range_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 SELECT * FROM test_range_types;
  int4range | int8range | numrange |                    tsrange
 ---------------------------------------------------------------------
@@ -62,7 +65,8 @@ SELECT * FROM test_range_types;
 CREATE TABLE test_other_types (bool boolean, bytea bytea, money money,
 	inet inet, bitstring bit varying(5), uuid uuid, json json) USING columnar;
 \set other_types_csv_file :abs_srcdir '/data/other_types.csv'
-COPY test_other_types FROM :'other_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_other_types FROM ' :'other_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 SELECT * FROM test_other_types;
  bool |   bytea    | money |    inet     | bitstring |                 uuid                 |       json
 ---------------------------------------------------------------------
@@ -74,7 +78,8 @@ SELECT * FROM test_other_types;
 CREATE TABLE test_null_values (a int, b int[], c composite_type)
 	USING columnar;
 \set null_values_csv_file :abs_srcdir '/data/null_values.csv'
-COPY test_null_values FROM :'null_values_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_null_values FROM ' :'null_values_csv_file' ' WITH CSV;'
+:client_side_copy_command
 SELECT * FROM test_null_values;
  a |   b    |  c
 ---------------------------------------------------------------------
diff --git a/src/test/regress/expected/columnar_load.out b/src/test/regress/expected/columnar_load.out
index 1b7ce594a..e4d4f4bce 100644
--- a/src/test/regress/expected/columnar_load.out
+++ b/src/test/regress/expected/columnar_load.out
@@ -3,8 +3,8 @@
 --
 -- COPY with incorrect delimiter
 \set contestants_1_csv_file :abs_srcdir '/data/contestants.1.csv'
-COPY contestant FROM :'contestants_1_csv_file'
-	WITH DELIMITER '|'; -- ERROR
+\set client_side_copy_command '\\copy contestant FROM ' :'contestants_1_csv_file' ' WITH DELIMITER '''|''';'
+:client_side_copy_command -- ERROR
 ERROR:  missing data for column "birthdate"
 CONTEXT:  COPY contestant, line 1: "a,1990-01-10,2090,97.1,XA ,{a}"
 -- COPY with invalid program
@@ -12,7 +12,8 @@ COPY contestant FROM PROGRAM 'invalid_program' WITH CSV; -- ERROR
 ERROR:  program "invalid_program" failed
 DETAIL:  command not found
 -- COPY into uncompressed table from file
-COPY contestant FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy contestant FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 -- COPY into uncompressed table from program
 \set cat_contestants_2_csv_file 'cat ' :abs_srcdir '/data/contestants.2.csv'
 COPY contestant FROM PROGRAM :'cat_contestants_2_csv_file' WITH CSV;
@@ -25,7 +26,8 @@ select
 (1 row)
 
 -- COPY into compressed table
-COPY contestant_compressed FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy contestant_compressed FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 -- COPY into uncompressed table from program
 COPY contestant_compressed FROM PROGRAM :'cat_contestants_2_csv_file'
 	WITH CSV;
diff --git a/src/test/regress/expected/multi_agg_distinct.out b/src/test/regress/expected/multi_agg_distinct.out
index 53cfe51c3..e37432c28 100644
--- a/src/test/regress/expected/multi_agg_distinct.out
+++ b/src/test/regress/expected/multi_agg_distinct.out
@@ -36,8 +36,10 @@ UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14947
 WHERE shardid = :new_shard_id;
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_range FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_range FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_range FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_range FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Run aggregate(distinct) on partition column for range partitioned table
 SELECT count(distinct l_orderkey) FROM lineitem_range;
  count
@@ -161,8 +163,10 @@ SELECT create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 
 (1 row)
 
-COPY lineitem_hash FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 -- aggregate(distinct) on partition column is allowed
 SELECT count(distinct l_orderkey) FROM lineitem_hash;
  count
diff --git a/src/test/regress/expected/multi_behavioral_analytics_create_table.out b/src/test/regress/expected/multi_behavioral_analytics_create_table.out
index 405cc08ed..40413290d 100644
--- a/src/test/regress/expected/multi_behavioral_analytics_create_table.out
+++ b/src/test/regress/expected/multi_behavioral_analytics_create_table.out
@@ -23,8 +23,10 @@ SELECT create_distributed_table('events_table', 'user_id');
 
 \set users_table_data_file :abs_srcdir '/data/users_table.data'
 \set events_table_data_file :abs_srcdir '/data/events_table.data'
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 SET citus.shard_count = 96;
 CREATE SCHEMA subquery_and_ctes;
 SET search_path TO subquery_and_ctes;
@@ -42,8 +44,10 @@ SELECT create_distributed_table('events_table', 'user_id');
 
 (1 row)
 
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 SET citus.shard_count TO DEFAULT;
 SET search_path TO DEFAULT;
 CREATE TABLE users_table (user_id int, time timestamp, value_1 int, value_2 int, value_3 float, value_4 bigint);
@@ -112,8 +116,10 @@ INSERT INTO users_ref_test_table VALUES(3,'User_3',47);
 INSERT INTO users_ref_test_table VALUES(4,'User_4',48);
 INSERT INTO users_ref_test_table VALUES(5,'User_5',49);
 INSERT INTO users_ref_test_table VALUES(6,'User_6',50);
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 -- create indexes for
 CREATE INDEX is_index1 ON users_table(user_id);
 CREATE INDEX is_index2 ON events_table(user_id);
diff --git a/src/test/regress/expected/multi_behavioral_analytics_create_table_superuser.out b/src/test/regress/expected/multi_behavioral_analytics_create_table_superuser.out
index 3eeda053e..7b8c0ac67 100644
--- a/src/test/regress/expected/multi_behavioral_analytics_create_table_superuser.out
+++ b/src/test/regress/expected/multi_behavioral_analytics_create_table_superuser.out
@@ -331,10 +331,14 @@ SELECT master_create_empty_shard('orders_subquery') AS new_shard_id
 UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14947
 WHERE shardid = :new_shard_id;
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
-COPY lineitem_subquery FROM :'lineitem_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_subquery FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_subquery FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_subquery FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
-COPY orders_subquery FROM :'orders_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_subquery FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders_subquery FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_subquery FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/expected/multi_complex_count_distinct.out b/src/test/regress/expected/multi_complex_count_distinct.out
index 955cce9cc..d4e6ecfa3 100644
--- a/src/test/regress/expected/multi_complex_count_distinct.out
+++ b/src/test/regress/expected/multi_complex_count_distinct.out
@@ -31,8 +31,10 @@ SELECT create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_hash FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 ANALYZE lineitem_hash;
 -- count(distinct) is supported on top level query if there
 -- is a grouping on the partition key
diff --git a/src/test/regress/expected/multi_copy.out b/src/test/regress/expected/multi_copy.out
index 8f6361836..ea7a58d63 100644
--- a/src/test/regress/expected/multi_copy.out
+++ b/src/test/regress/expected/multi_copy.out
@@ -106,7 +106,8 @@ SELECT count(*) FROM customer_copy_hash WHERE c_custkey = 9;
 (1 row)
 
 -- Test server-side copy from file
-COPY customer_copy_hash FROM :'customer2datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_hash FROM ' :'customer2datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 -- Confirm that data was copied
 SELECT count(*) FROM customer_copy_hash;
  count
@@ -208,7 +209,8 @@ SELECT master_create_distributed_table('customer_copy_range', 'c_custkey', 'rang
 (1 row)
 
 -- Test COPY into empty range-partitioned table
-COPY customer_copy_range FROM :'customer1datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_range FROM ' :'customer1datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 ERROR:  could not find any shards into which to copy
 DETAIL:  No shards exist for distributed table "customer_copy_range".
 SELECT master_create_empty_shard('customer_copy_range') AS new_shard_id
@@ -220,7 +222,8 @@ SELECT master_create_empty_shard('customer_copy_range') AS new_shard_id
 UPDATE pg_dist_shard SET shardminvalue = 501, shardmaxvalue = 1000
 WHERE shardid = :new_shard_id;
 -- Test copy into range-partitioned table
-COPY customer_copy_range FROM :'customer1datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_range FROM ' :'customer1datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 -- Check whether data went into the right shard (maybe)
 SELECT min(c_custkey), max(c_custkey), avg(c_custkey), count(*)
 FROM customer_copy_range WHERE c_custkey <= 500;
@@ -360,7 +363,8 @@ SELECT create_distributed_table('lineitem_copy_append', 'l_orderkey', 'append');
 
 BEGIN;
 SELECT master_create_empty_shard('lineitem_copy_append') AS shardid \gset
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard :shardid);
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard ' :shardid ');'
+:client_side_copy_command
 END;
 SELECT count(*) FROM pg_dist_shard WHERE logicalrelid = 'lineitem_copy_append'::regclass;
  count
@@ -369,9 +373,11 @@ SELECT count(*) FROM pg_dist_shard WHERE logicalrelid = 'lineitem_copy_append'::
 (1 row)
 
 -- trigger some errors on the append_to_shard option
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard xxxxx);
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard xxxxx);'
+:client_side_copy_command
 ERROR:  could not find valid entry for shard xxxxx
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard xxxxx);
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard xxxxx);'
+:client_side_copy_command
 ERROR:  shard xxxxx does not belong to table lineitem_copy_append
 -- Test schema support on append partitioned tables
 CREATE SCHEMA append;
@@ -393,8 +399,10 @@ SELECT create_distributed_table('append.customer_copy', 'c_custkey', 'append');
 SELECT master_create_empty_shard('append.customer_copy') AS shardid1 \gset
 SELECT master_create_empty_shard('append.customer_copy') AS shardid2 \gset
 -- Test copy from the master node
-COPY append.customer_copy FROM :'customer1datafile' with (delimiter '|', append_to_shard :shardid1);
-COPY append.customer_copy FROM :'customer2datafile' with (delimiter '|', append_to_shard :shardid2);
+\set client_side_copy_command '\\copy append.customer_copy FROM ' :'customer1datafile' ' with (delimiter '''|''', append_to_shard ' :shardid1 ');'
+:client_side_copy_command
+\set client_side_copy_command '\\copy append.customer_copy FROM ' :'customer2datafile' ' with (delimiter '''|''', append_to_shard ' :shardid2 ');'
+:client_side_copy_command
 -- Test the content of the table
 SELECT min(c_custkey), max(c_custkey), avg(c_acctbal), count(*) FROM append.customer_copy;
  min | max  |          avg          | count
diff --git a/src/test/regress/expected/multi_load_data.out b/src/test/regress/expected/multi_load_data.out
index 4b0bdbdb0..5a94cdfdc 100644
--- a/src/test/regress/expected/multi_load_data.out
+++ b/src/test/regress/expected/multi_load_data.out
@@ -3,22 +3,35 @@
 --
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders FROM :'orders_1_data_file' with delimiter '|';
-COPY orders FROM :'orders_2_data_file' with delimiter '|';
-COPY orders_reference FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_reference FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_reference FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_reference FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set customer_1_data_file :abs_srcdir '/data/customer.1.data'
 \set nation_data_file :abs_srcdir '/data/nation.data'
 \set part_data_file :abs_srcdir '/data/part.data'
 \set supplier_data_file :abs_srcdir '/data/supplier.data'
-COPY customer FROM :'customer_1_data_file' with delimiter '|';
-COPY customer_append FROM :'customer_1_data_file' with (delimiter '|', append_to_shard xxxxx);
-COPY nation FROM :'nation_data_file' with delimiter '|';
-COPY part FROM :'part_data_file' with delimiter '|';
-COPY part_append FROM :'part_data_file' with (delimiter '|', append_to_shard xxxxx);
-COPY supplier FROM :'supplier_data_file' with delimiter '|';
-COPY supplier_single_shard FROM :'supplier_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy customer_append FROM ' :'customer_1_data_file' ' with (delimiter '''|''', append_to_shard xxxxx);'
+:client_side_copy_command
+\set client_side_copy_command '\\copy nation FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part FROM ' :'part_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part_append FROM ' :'part_data_file' ' with (delimiter '''|''', append_to_shard xxxxx);'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier_single_shard FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/expected/multi_load_data_superuser.out b/src/test/regress/expected/multi_load_data_superuser.out
index 1bb820b1f..77ed5b7de 100644
--- a/src/test/regress/expected/multi_load_data_superuser.out
+++ b/src/test/regress/expected/multi_load_data_superuser.out
@@ -2,7 +2,11 @@
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY lineitem_hash_part FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash_part FROM :'lineitem_2_data_file' with delimiter '|';
-COPY orders_hash_part FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_hash_part FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash_part FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash_part FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_hash_part FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_hash_part FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/expected/multi_load_more_data.out b/src/test/regress/expected/multi_load_more_data.out
index 9d601646d..3859a3e91 100644
--- a/src/test/regress/expected/multi_load_more_data.out
+++ b/src/test/regress/expected/multi_load_more_data.out
@@ -8,9 +8,12 @@ SET citus.next_shard_id TO 280000;
 \set customer_2_data_file :abs_srcdir '/data/customer.2.data'
 \set customer_3_data_file :abs_srcdir '/data/customer.3.data'
 \set part_more_data_file :abs_srcdir '/data/part.more.data'
-COPY customer FROM :'customer_2_data_file' with delimiter '|';
-COPY customer FROM :'customer_3_data_file' with delimiter '|';
-COPY part FROM :'part_more_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer FROM ' :'customer_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy customer FROM ' :'customer_3_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part FROM ' :'part_more_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 SELECT master_create_empty_shard('customer_append') AS shardid1 \gset
 SELECT master_create_empty_shard('customer_append') AS shardid2 \gset
 copy customer_append FROM :'customer_2_data_file' with (delimiter '|', append_to_shard :shardid1);
diff --git a/src/test/regress/expected/multi_mx_copy_data.out b/src/test/regress/expected/multi_mx_copy_data.out
index b5e2d84c8..c1d3d7180 100644
--- a/src/test/regress/expected/multi_mx_copy_data.out
+++ b/src/test/regress/expected/multi_mx_copy_data.out
@@ -2,12 +2,17 @@
 -- MULTI_MX_COPY_DATA
 --
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY nation_hash FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 SET search_path TO citus_mx_test_schema;
-COPY nation_hash FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_1.nation_hash FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_1.nation_hash_2 FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_2.nation_hash FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_1.nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_1.nation_hash_2 FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_2.nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 SET citus.shard_replication_factor TO 2;
 CREATE TABLE citus_mx_test_schema.nation_hash_replicated AS SELECT * FROM citus_mx_test_schema.nation_hash;
 SELECT create_distributed_table('citus_mx_test_schema.nation_hash_replicated', 'n_nationkey');
@@ -20,24 +25,31 @@ HINT:  To remove the local data, run: SELECT truncate_local_data_after_distribut
 
 (1 row)
 
-COPY nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 -- now try loading data from worker node
 \c - - - :worker_1_port
 SET search_path TO public;
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_mx FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_mx FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_mx FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_mx FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \c - - - :worker_2_port
 -- and use second worker as well
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY orders_mx FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_mx FROM :'orders_2_data_file' with delimiter '|';
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 -- get ready for the next test
 TRUNCATE orders_mx;
 \c - - - :worker_2_port
@@ -64,7 +76,8 @@ show citus.local_shared_pool_size;
 
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders_mx FROM :'orders_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY orders_mx, line 3: "3|1234|F|205654.30|1993-10-14|5-LOW|Clerk#000000955|0|sly final accounts boost. carefully regular id..."
 NOTICE:  executing the copy locally for shard xxxxx
@@ -81,7 +94,8 @@ NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY orders_mx, line 25: "97|211|F|100572.55|1993-01-29|3-MEDIUM|Clerk#000000547|0|hang blithely along the regular accounts. f..."
 NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY orders_mx, line 38: "134|62|F|208201.46|1992-05-01|4-NOT SPECIFIED|Clerk#000000711|0|lar theodolites boos"
-COPY orders_mx FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY orders_mx, line 2: "8998|80|F|147264.16|1993-01-04|5-LOW|Clerk#000000733|0| fluffily pending sauternes cajo"
 NOTICE:  executing the copy locally for shard xxxxx
@@ -99,7 +113,8 @@ CONTEXT:  COPY orders_mx, line 43: "9159|1135|O|99594.61|1995-07-26|1-URGENT|Cle
 NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY orders_mx, line 69: "9281|904|F|173278.28|1992-02-24|1-URGENT|Clerk#000000530|0|eep furiously according to the requests; ..."
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 NOTICE:  executing the copy locally for shard xxxxx
 CONTEXT:  COPY nation_hash_replicated, line 1: "0|ALGERIA|0| haggle. carefully final deposits detect slyly agai"
 NOTICE:  executing the copy locally for shard xxxxx
@@ -138,7 +153,11 @@ SET search_path TO public;
 \set nation_data_file :abs_srcdir '/data/nation.data'
 \set part_data_file :abs_srcdir '/data/part.data'
 \set supplier_data_file :abs_srcdir '/data/supplier.data'
-COPY customer_mx FROM :'customer_1_data_file' with delimiter '|';
-COPY nation_mx FROM :'nation_data_file' with delimiter '|';
-COPY part_mx FROM :'part_data_file' with delimiter '|';
-COPY supplier_mx FROM :'supplier_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer_mx FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy nation_mx FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part_mx FROM ' :'part_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier_mx FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/expected/multi_outer_join.out b/src/test/regress/expected/multi_outer_join.out
index e3b9efff0..1748a0dfc 100644
--- a/src/test/regress/expected/multi_outer_join.out
+++ b/src/test/regress/expected/multi_outer_join.out
@@ -89,10 +89,14 @@ SELECT create_reference_table('multi_outer_join_third_reference');
 \set customer_1_10_data :abs_srcdir '/data/customer-1-10.data'
 \set customer_11_20_data :abs_srcdir '/data/customer-11-20.data'
 \set customer_1_15_data :abs_srcdir '/data/customer-1-15.data'
-COPY multi_outer_join_left FROM :'customer_1_10_data' with delimiter '|';
-COPY multi_outer_join_left FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_right_reference FROM :'customer_1_15_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_1_10_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Make sure we do not crash if one table has no shards
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -114,8 +118,10 @@ FROM
 
 -- Third table is a single shard table with all data
 \set customer_1_30_data :abs_srcdir '/data/customer-1-30.data'
-COPY multi_outer_join_third FROM :'customer_1_30_data' with delimiter '|';
-COPY multi_outer_join_third_reference FROM :'customer_1_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_third FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_third_reference FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Regular outer join should return results for all rows
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -228,7 +234,8 @@ FROM
 
 -- Turn the right table into a large table
 \set customer_21_30_data :abs_srcdir '/data/customer-21-30.data'
-COPY multi_outer_join_right FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Shards do not have 1-1 matching. We should error here.
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -244,11 +251,15 @@ TRUNCATE multi_outer_join_left;
 TRUNCATE multi_outer_join_right;
 -- reload shards with 1-1 matching
 \set customer_subset_11_20_data :abs_srcdir '/data/customer-subset-11-20.data'
-COPY multi_outer_join_left FROM :'customer_subset_11_20_data' with delimiter '|';
-COPY multi_outer_join_left FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_subset_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 \set customer_subset_21_30_data :abs_srcdir '/data/customer-subset-21-30.data'
-COPY multi_outer_join_right FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right FROM :'customer_subset_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_subset_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- multi_outer_join_third is a single shard table
 -- Regular left join should work as expected
 SELECT
@@ -803,7 +814,8 @@ LIMIT 20;
 
 -- Add a shard to the left table that overlaps with multiple shards in the right
 \set customer_1_data_file :abs_srcdir '/data/customer.1.data'
-COPY multi_outer_join_left FROM :'customer_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 -- All outer joins should error out
 SELECT
 	min(l_custkey), max(l_custkey)
diff --git a/src/test/regress/expected/multi_outer_join_reference.out b/src/test/regress/expected/multi_outer_join_reference.out
index 2f7be031b..d75f67089 100644
--- a/src/test/regress/expected/multi_outer_join_reference.out
+++ b/src/test/regress/expected/multi_outer_join_reference.out
@@ -83,12 +83,16 @@ FROM
 -- Left table is a large table
 \set customer_1_10_data :abs_srcdir '/data/customer-1-10.data'
 \set customer_11_20_data :abs_srcdir '/data/customer-11-20.data'
-COPY multi_outer_join_left_hash FROM :'customer_1_10_data' with delimiter '|';
-COPY multi_outer_join_left_hash FROM :'customer_11_20_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_1_10_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Right table is a small table
 \set customer_1_15_data :abs_srcdir '/data/customer-1-15.data'
-COPY multi_outer_join_right_reference FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_1_15_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Make sure we do not crash if one table has data
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -110,8 +114,10 @@ FROM
 
 -- Third table is a single shard table with all data
 \set customer_1_30_data :abs_srcdir '/data/customer-1-30.data'
-COPY multi_outer_join_third_reference FROM :'customer_1_30_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_1_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_third_reference FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Regular outer join should return results for all rows
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -221,7 +227,8 @@ FROM
 
 -- load some more data
 \set customer_21_30_data :abs_srcdir '/data/customer-21-30.data'
-COPY multi_outer_join_right_reference FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- Update shards so that they do not have 1-1 matching, triggering an error.
 UPDATE pg_dist_shard SET shardminvalue = '2147483646' WHERE shardid = 1260006;
 UPDATE pg_dist_shard SET shardmaxvalue = '2147483647' WHERE shardid = 1260006;
@@ -235,12 +242,18 @@ UPDATE pg_dist_shard SET shardmaxvalue = '-1073741825' WHERE shardid = 1260006;
 -- empty tables
 TRUNCATE multi_outer_join_left_hash, multi_outer_join_right_hash, multi_outer_join_right_reference;
 -- reload shards with 1-1 matching
-COPY multi_outer_join_left_hash FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_left_hash FROM :'customer_21_30_data' with delimiter '|';
-COPY multi_outer_join_right_reference FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right_reference FROM :'customer_21_30_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 -- multi_outer_join_third_reference is a single shard table
 -- Regular left join should work as expected
 SELECT
diff --git a/src/test/regress/sql/columnar_copyto.sql b/src/test/regress/sql/columnar_copyto.sql
index 814e74009..4ed3e5bf8 100644
--- a/src/test/regress/sql/columnar_copyto.sql
+++ b/src/test/regress/sql/columnar_copyto.sql
@@ -7,7 +7,8 @@ CREATE TABLE test_contestant(handle TEXT, birthdate DATE, rating INT,
 
 -- load table data from file
 \set contestants_1_csv_file :abs_srcdir '/data/contestants.1.csv'
-COPY test_contestant FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_contestant FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 -- export using COPY table TO ...
 COPY test_contestant TO STDOUT;
diff --git a/src/test/regress/sql/columnar_data_types.sql b/src/test/regress/sql/columnar_data_types.sql
index e01f50720..05f84cae1 100644
--- a/src/test/regress/sql/columnar_data_types.sql
+++ b/src/test/regress/sql/columnar_data_types.sql
@@ -14,7 +14,8 @@ CREATE TABLE test_array_types (int_array int[], bigint_array bigint[],
 	text_array text[]) USING columnar;
 
 \set array_types_csv_file :abs_srcdir '/data/array_types.csv'
-COPY test_array_types FROM :'array_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_array_types FROM ' :'array_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 SELECT * FROM test_array_types;
 
@@ -25,7 +26,8 @@ CREATE TABLE test_datetime_types (timestamp timestamp,
 	interval interval) USING columnar;
 
 \set datetime_types_csv_file :abs_srcdir '/data/datetime_types.csv'
-COPY test_datetime_types FROM :'datetime_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_datetime_types FROM ' :'datetime_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 SELECT * FROM test_datetime_types;
 
@@ -49,7 +51,8 @@ CREATE TABLE test_range_types (int4range int4range, int8range int8range,
 	numrange numrange, tsrange tsrange) USING columnar;
 
 \set range_types_csv_file :abs_srcdir '/data/range_types.csv'
-COPY test_range_types FROM :'range_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_range_types FROM ' :'range_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 SELECT * FROM test_range_types;
 
@@ -59,7 +62,8 @@ CREATE TABLE test_other_types (bool boolean, bytea bytea, money money,
 	inet inet, bitstring bit varying(5), uuid uuid, json json) USING columnar;
 
 \set other_types_csv_file :abs_srcdir '/data/other_types.csv'
-COPY test_other_types FROM :'other_types_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_other_types FROM ' :'other_types_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 SELECT * FROM test_other_types;
 
@@ -69,7 +73,8 @@ CREATE TABLE test_null_values (a int, b int[], c composite_type)
 	USING columnar;
 
 \set null_values_csv_file :abs_srcdir '/data/null_values.csv'
-COPY test_null_values FROM :'null_values_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy test_null_values FROM ' :'null_values_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 SELECT * FROM test_null_values;
 
diff --git a/src/test/regress/sql/columnar_load.sql b/src/test/regress/sql/columnar_load.sql
index f77b9e007..fcfc1bb34 100644
--- a/src/test/regress/sql/columnar_load.sql
+++ b/src/test/regress/sql/columnar_load.sql
@@ -4,14 +4,15 @@
 
 -- COPY with incorrect delimiter
 \set contestants_1_csv_file :abs_srcdir '/data/contestants.1.csv'
-COPY contestant FROM :'contestants_1_csv_file'
-	WITH DELIMITER '|'; -- ERROR
+\set client_side_copy_command '\\copy contestant FROM ' :'contestants_1_csv_file' ' WITH DELIMITER '''|''';'
+:client_side_copy_command -- ERROR
 
 -- COPY with invalid program
 COPY contestant FROM PROGRAM 'invalid_program' WITH CSV; -- ERROR
 
 -- COPY into uncompressed table from file
-COPY contestant FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy contestant FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 -- COPY into uncompressed table from program
 \set cat_contestants_2_csv_file 'cat ' :abs_srcdir '/data/contestants.2.csv'
@@ -22,7 +23,8 @@ select
   from columnar_test_helpers.columnar_storage_info('contestant');
 
 -- COPY into compressed table
-COPY contestant_compressed FROM :'contestants_1_csv_file' WITH CSV;
+\set client_side_copy_command '\\copy contestant_compressed FROM ' :'contestants_1_csv_file' ' WITH CSV;'
+:client_side_copy_command
 
 -- COPY into uncompressed table from program
 COPY contestant_compressed FROM PROGRAM :'cat_contestants_2_csv_file'
diff --git a/src/test/regress/sql/multi_agg_distinct.sql b/src/test/regress/sql/multi_agg_distinct.sql
index 1793519b4..27dada8dd 100644
--- a/src/test/regress/sql/multi_agg_distinct.sql
+++ b/src/test/regress/sql/multi_agg_distinct.sql
@@ -36,8 +36,10 @@ WHERE shardid = :new_shard_id;
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_range FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_range FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_range FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_range FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Run aggregate(distinct) on partition column for range partitioned table
 
@@ -95,8 +97,10 @@ CREATE TABLE lineitem_hash (
 SET citus.shard_replication_factor TO 1;
 SELECT create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 
-COPY lineitem_hash FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- aggregate(distinct) on partition column is allowed
 SELECT count(distinct l_orderkey) FROM lineitem_hash;
diff --git a/src/test/regress/sql/multi_behavioral_analytics_create_table.sql b/src/test/regress/sql/multi_behavioral_analytics_create_table.sql
index 24436eb1f..abc6b01f1 100644
--- a/src/test/regress/sql/multi_behavioral_analytics_create_table.sql
+++ b/src/test/regress/sql/multi_behavioral_analytics_create_table.sql
@@ -17,8 +17,10 @@ SELECT create_distributed_table('events_table', 'user_id');
 
 \set users_table_data_file :abs_srcdir '/data/users_table.data'
 \set events_table_data_file :abs_srcdir '/data/events_table.data'
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 
 SET citus.shard_count = 96;
 CREATE SCHEMA subquery_and_ctes;
@@ -30,8 +32,10 @@ SELECT create_distributed_table('users_table', 'user_id');
 CREATE TABLE events_table (user_id int, time timestamp, event_type int, value_2 int, value_3 float, value_4 bigint);
 SELECT create_distributed_table('events_table', 'user_id');
 
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 
 SET citus.shard_count TO DEFAULT;
 SET search_path TO DEFAULT;
@@ -70,8 +74,10 @@ INSERT INTO users_ref_test_table VALUES(4,'User_4',48);
 INSERT INTO users_ref_test_table VALUES(5,'User_5',49);
 INSERT INTO users_ref_test_table VALUES(6,'User_6',50);
 
-COPY users_table FROM :'users_table_data_file' WITH CSV;
-COPY events_table FROM :'events_table_data_file' WITH CSV;
+\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
+:client_side_copy_command
+\set client_side_copy_command '\\copy events_table FROM ' :'events_table_data_file' ' WITH CSV;'
+:client_side_copy_command
 
 -- create indexes for
 CREATE INDEX is_index1 ON users_table(user_id);
diff --git a/src/test/regress/sql/multi_behavioral_analytics_create_table_superuser.sql b/src/test/regress/sql/multi_behavioral_analytics_create_table_superuser.sql
index 0d35760ec..bc4715760 100644
--- a/src/test/regress/sql/multi_behavioral_analytics_create_table_superuser.sql
+++ b/src/test/regress/sql/multi_behavioral_analytics_create_table_superuser.sql
@@ -291,11 +291,15 @@ UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14947
 WHERE shardid = :new_shard_id;
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
-COPY lineitem_subquery FROM :'lineitem_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_subquery FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_subquery FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_subquery FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
-COPY orders_subquery FROM :'orders_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_subquery FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders_subquery FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_subquery FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/sql/multi_complex_count_distinct.sql b/src/test/regress/sql/multi_complex_count_distinct.sql
index c804f260f..9957d0959 100644
--- a/src/test/regress/sql/multi_complex_count_distinct.sql
+++ b/src/test/regress/sql/multi_complex_count_distinct.sql
@@ -31,8 +31,10 @@ SELECT create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_hash FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 ANALYZE lineitem_hash;
 
diff --git a/src/test/regress/sql/multi_copy.sql b/src/test/regress/sql/multi_copy.sql
index b9a741b33..fabadd88c 100644
--- a/src/test/regress/sql/multi_copy.sql
+++ b/src/test/regress/sql/multi_copy.sql
@@ -102,7 +102,8 @@ WITH (DELIMITER ' ');
 SELECT count(*) FROM customer_copy_hash WHERE c_custkey = 9;
 
 -- Test server-side copy from file
-COPY customer_copy_hash FROM :'customer2datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_hash FROM ' :'customer2datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 
 -- Confirm that data was copied
 SELECT count(*) FROM customer_copy_hash;
@@ -184,7 +185,8 @@ CREATE TABLE customer_copy_range (
 SELECT master_create_distributed_table('customer_copy_range', 'c_custkey', 'range');
 
 -- Test COPY into empty range-partitioned table
-COPY customer_copy_range FROM :'customer1datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_range FROM ' :'customer1datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 
 SELECT master_create_empty_shard('customer_copy_range') AS new_shard_id
 \gset
@@ -197,7 +199,8 @@ UPDATE pg_dist_shard SET shardminvalue = 501, shardmaxvalue = 1000
 WHERE shardid = :new_shard_id;
 
 -- Test copy into range-partitioned table
-COPY customer_copy_range FROM :'customer1datafile' WITH (DELIMITER '|');
+\set client_side_copy_command '\\copy customer_copy_range FROM ' :'customer1datafile' ' WITH (DELIMITER '''|''');'
+:client_side_copy_command
 
 -- Check whether data went into the right shard (maybe)
 SELECT min(c_custkey), max(c_custkey), avg(c_custkey), count(*)
@@ -293,14 +296,17 @@ SELECT create_distributed_table('lineitem_copy_append', 'l_orderkey', 'append');
 
 BEGIN;
 SELECT master_create_empty_shard('lineitem_copy_append') AS shardid \gset
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard :shardid);
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard ' :shardid ');'
+:client_side_copy_command
 END;
 
 SELECT count(*) FROM pg_dist_shard WHERE logicalrelid = 'lineitem_copy_append'::regclass;
 
 -- trigger some errors on the append_to_shard option
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard 1);
-COPY lineitem_copy_append FROM :'lineitem1datafile' with (delimiter '|', append_to_shard 560000);
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard 1);'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_copy_append FROM ' :'lineitem1datafile' ' with (delimiter '''|''', append_to_shard 560000);'
+:client_side_copy_command
 
 -- Test schema support on append partitioned tables
 CREATE SCHEMA append;
@@ -319,8 +325,10 @@ SELECT master_create_empty_shard('append.customer_copy') AS shardid1 \gset
 SELECT master_create_empty_shard('append.customer_copy') AS shardid2 \gset
 
 -- Test copy from the master node
-COPY append.customer_copy FROM :'customer1datafile' with (delimiter '|', append_to_shard :shardid1);
-COPY append.customer_copy FROM :'customer2datafile' with (delimiter '|', append_to_shard :shardid2);
+\set client_side_copy_command '\\copy append.customer_copy FROM ' :'customer1datafile' ' with (delimiter '''|''', append_to_shard ' :shardid1 ');'
+:client_side_copy_command
+\set client_side_copy_command '\\copy append.customer_copy FROM ' :'customer2datafile' ' with (delimiter '''|''', append_to_shard ' :shardid2 ');'
+:client_side_copy_command
 
 -- Test the content of the table
 SELECT min(c_custkey), max(c_custkey), avg(c_acctbal), count(*) FROM append.customer_copy;
diff --git a/src/test/regress/sql/multi_load_data.sql b/src/test/regress/sql/multi_load_data.sql
index 8b013ec84..edb21a4f3 100644
--- a/src/test/regress/sql/multi_load_data.sql
+++ b/src/test/regress/sql/multi_load_data.sql
@@ -4,25 +4,38 @@
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders FROM :'orders_1_data_file' with delimiter '|';
-COPY orders FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
-COPY orders_reference FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_reference FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_reference FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_reference FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set customer_1_data_file :abs_srcdir '/data/customer.1.data'
 \set nation_data_file :abs_srcdir '/data/nation.data'
 \set part_data_file :abs_srcdir '/data/part.data'
 \set supplier_data_file :abs_srcdir '/data/supplier.data'
-COPY customer FROM :'customer_1_data_file' with delimiter '|';
-COPY customer_append FROM :'customer_1_data_file' with (delimiter '|', append_to_shard 360006);
-COPY nation FROM :'nation_data_file' with delimiter '|';
-COPY part FROM :'part_data_file' with delimiter '|';
-COPY part_append FROM :'part_data_file' with (delimiter '|', append_to_shard 360009);
-COPY supplier FROM :'supplier_data_file' with delimiter '|';
-COPY supplier_single_shard FROM :'supplier_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy customer_append FROM ' :'customer_1_data_file' ' with (delimiter '''|''', append_to_shard 360006);'
+:client_side_copy_command
+\set client_side_copy_command '\\copy nation FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part FROM ' :'part_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part_append FROM ' :'part_data_file' ' with (delimiter '''|''', append_to_shard 360009);'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier_single_shard FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/sql/multi_load_data_superuser.sql b/src/test/regress/sql/multi_load_data_superuser.sql
index 1bb820b1f..77ed5b7de 100644
--- a/src/test/regress/sql/multi_load_data_superuser.sql
+++ b/src/test/regress/sql/multi_load_data_superuser.sql
@@ -2,7 +2,11 @@
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY lineitem_hash_part FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_hash_part FROM :'lineitem_2_data_file' with delimiter '|';
-COPY orders_hash_part FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_hash_part FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_hash_part FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_hash_part FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_hash_part FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_hash_part FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/sql/multi_load_more_data.sql b/src/test/regress/sql/multi_load_more_data.sql
index 03085959b..3e1085bce 100644
--- a/src/test/regress/sql/multi_load_more_data.sql
+++ b/src/test/regress/sql/multi_load_more_data.sql
@@ -13,9 +13,12 @@ SET citus.next_shard_id TO 280000;
 \set customer_2_data_file :abs_srcdir '/data/customer.2.data'
 \set customer_3_data_file :abs_srcdir '/data/customer.3.data'
 \set part_more_data_file :abs_srcdir '/data/part.more.data'
-COPY customer FROM :'customer_2_data_file' with delimiter '|';
-COPY customer FROM :'customer_3_data_file' with delimiter '|';
-COPY part FROM :'part_more_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer FROM ' :'customer_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy customer FROM ' :'customer_3_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part FROM ' :'part_more_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 SELECT master_create_empty_shard('customer_append') AS shardid1 \gset
 SELECT master_create_empty_shard('customer_append') AS shardid2 \gset
diff --git a/src/test/regress/sql/multi_mx_copy_data.sql b/src/test/regress/sql/multi_mx_copy_data.sql
index fdb11e913..26d4d3c42 100644
--- a/src/test/regress/sql/multi_mx_copy_data.sql
+++ b/src/test/regress/sql/multi_mx_copy_data.sql
@@ -3,18 +3,24 @@
 --
 
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY nation_hash FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 SET search_path TO citus_mx_test_schema;
-COPY nation_hash FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_1.nation_hash FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_1.nation_hash_2 FROM :'nation_data_file' with delimiter '|';
-COPY citus_mx_test_schema_join_2.nation_hash FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_1.nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_1.nation_hash_2 FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema_join_2.nation_hash FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 SET citus.shard_replication_factor TO 2;
 CREATE TABLE citus_mx_test_schema.nation_hash_replicated AS SELECT * FROM citus_mx_test_schema.nation_hash;
 SELECT create_distributed_table('citus_mx_test_schema.nation_hash_replicated', 'n_nationkey');
-COPY nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- now try loading data from worker node
 \c - - - :worker_1_port
@@ -22,20 +28,26 @@ SET search_path TO public;
 
 \set lineitem_1_data_file :abs_srcdir '/data/lineitem.1.data'
 \set lineitem_2_data_file :abs_srcdir '/data/lineitem.2.data'
-COPY lineitem_mx FROM :'lineitem_1_data_file' with delimiter '|';
-COPY lineitem_mx FROM :'lineitem_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy lineitem_mx FROM ' :'lineitem_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy lineitem_mx FROM ' :'lineitem_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \c - - - :worker_2_port
 -- and use second worker as well
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY orders_mx FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_mx FROM :'orders_2_data_file' with delimiter '|';
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- get ready for the next test
 TRUNCATE orders_mx;
@@ -50,11 +62,14 @@ show citus.local_shared_pool_size;
 
 \set orders_1_data_file :abs_srcdir '/data/orders.1.data'
 \set orders_2_data_file :abs_srcdir '/data/orders.2.data'
-COPY orders_mx FROM :'orders_1_data_file' with delimiter '|';
-COPY orders_mx FROM :'orders_2_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy orders_mx FROM ' :'orders_2_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set nation_data_file :abs_srcdir '/data/nation.data'
-COPY citus_mx_test_schema.nation_hash_replicated FROM :'nation_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy citus_mx_test_schema.nation_hash_replicated FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- set it back
 ALTER SYSTEM RESET citus.local_shared_pool_size;
@@ -73,7 +88,11 @@ SET search_path TO public;
 \set nation_data_file :abs_srcdir '/data/nation.data'
 \set part_data_file :abs_srcdir '/data/part.data'
 \set supplier_data_file :abs_srcdir '/data/supplier.data'
-COPY customer_mx FROM :'customer_1_data_file' with delimiter '|';
-COPY nation_mx FROM :'nation_data_file' with delimiter '|';
-COPY part_mx FROM :'part_data_file' with delimiter '|';
-COPY supplier_mx FROM :'supplier_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy customer_mx FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy nation_mx FROM ' :'nation_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy part_mx FROM ' :'part_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy supplier_mx FROM ' :'supplier_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
diff --git a/src/test/regress/sql/multi_outer_join.sql b/src/test/regress/sql/multi_outer_join.sql
index e5cdd1dfa..280f4e211 100644
--- a/src/test/regress/sql/multi_outer_join.sql
+++ b/src/test/regress/sql/multi_outer_join.sql
@@ -72,10 +72,14 @@ SELECT create_reference_table('multi_outer_join_third_reference');
 \set customer_1_10_data :abs_srcdir '/data/customer-1-10.data'
 \set customer_11_20_data :abs_srcdir '/data/customer-11-20.data'
 \set customer_1_15_data :abs_srcdir '/data/customer-1-15.data'
-COPY multi_outer_join_left FROM :'customer_1_10_data' with delimiter '|';
-COPY multi_outer_join_left FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_right_reference FROM :'customer_1_15_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_1_10_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Make sure we do not crash if one table has no shards
 SELECT
@@ -90,8 +94,10 @@ FROM
 
 -- Third table is a single shard table with all data
 \set customer_1_30_data :abs_srcdir '/data/customer-1-30.data'
-COPY multi_outer_join_third FROM :'customer_1_30_data' with delimiter '|';
-COPY multi_outer_join_third_reference FROM :'customer_1_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_third FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_third_reference FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Regular outer join should return results for all rows
 SELECT
@@ -171,7 +177,8 @@ FROM
 
 -- Turn the right table into a large table
 \set customer_21_30_data :abs_srcdir '/data/customer-21-30.data'
-COPY multi_outer_join_right FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 
 -- Shards do not have 1-1 matching. We should error here.
@@ -186,12 +193,16 @@ TRUNCATE multi_outer_join_right;
 
 -- reload shards with 1-1 matching
 \set customer_subset_11_20_data :abs_srcdir '/data/customer-subset-11-20.data'
-COPY multi_outer_join_left FROM :'customer_subset_11_20_data' with delimiter '|';
-COPY multi_outer_join_left FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_subset_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 \set customer_subset_21_30_data :abs_srcdir '/data/customer-subset-21-30.data'
-COPY multi_outer_join_right FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right FROM :'customer_subset_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right FROM ' :'customer_subset_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- multi_outer_join_third is a single shard table
 -- Regular left join should work as expected
@@ -454,7 +465,8 @@ LIMIT 20;
 
 -- Add a shard to the left table that overlaps with multiple shards in the right
 \set customer_1_data_file :abs_srcdir '/data/customer.1.data'
-COPY multi_outer_join_left FROM :'customer_1_data_file' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left FROM ' :'customer_1_data_file' ' with delimiter '''|''';'
+:client_side_copy_command
 
 
 -- All outer joins should error out
diff --git a/src/test/regress/sql/multi_outer_join_reference.sql b/src/test/regress/sql/multi_outer_join_reference.sql
index 5348ccd1b..6aa2658b7 100644
--- a/src/test/regress/sql/multi_outer_join_reference.sql
+++ b/src/test/regress/sql/multi_outer_join_reference.sql
@@ -66,13 +66,17 @@ FROM
 -- Left table is a large table
 \set customer_1_10_data :abs_srcdir '/data/customer-1-10.data'
 \set customer_11_20_data :abs_srcdir '/data/customer-11-20.data'
-COPY multi_outer_join_left_hash FROM :'customer_1_10_data' with delimiter '|';
-COPY multi_outer_join_left_hash FROM :'customer_11_20_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_1_10_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Right table is a small table
 \set customer_1_15_data :abs_srcdir '/data/customer-1-15.data'
-COPY multi_outer_join_right_reference FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_1_15_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Make sure we do not crash if one table has data
 SELECT
@@ -87,8 +91,10 @@ FROM
 
 -- Third table is a single shard table with all data
 \set customer_1_30_data :abs_srcdir '/data/customer-1-30.data'
-COPY multi_outer_join_third_reference FROM :'customer_1_30_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_1_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_third_reference FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_1_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 
 -- Regular outer join should return results for all rows
@@ -169,7 +175,8 @@ FROM
 
 -- load some more data
 \set customer_21_30_data :abs_srcdir '/data/customer-21-30.data'
-COPY multi_outer_join_right_reference FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- Update shards so that they do not have 1-1 matching, triggering an error.
 UPDATE pg_dist_shard SET shardminvalue = '2147483646' WHERE shardid = 1260006;
@@ -185,14 +192,20 @@ UPDATE pg_dist_shard SET shardmaxvalue = '-1073741825' WHERE shardid = 1260006;
 TRUNCATE multi_outer_join_left_hash, multi_outer_join_right_hash, multi_outer_join_right_reference;
 
 -- reload shards with 1-1 matching
-COPY multi_outer_join_left_hash FROM :'customer_1_15_data' with delimiter '|';
-COPY multi_outer_join_left_hash FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_1_15_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_left_hash FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
-COPY multi_outer_join_right_reference FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right_reference FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_reference FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
-COPY multi_outer_join_right_hash FROM :'customer_11_20_data' with delimiter '|';
-COPY multi_outer_join_right_hash FROM :'customer_21_30_data' with delimiter '|';
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_11_20_data' ' with delimiter '''|''';'
+:client_side_copy_command
+\set client_side_copy_command '\\copy multi_outer_join_right_hash FROM ' :'customer_21_30_data' ' with delimiter '''|''';'
+:client_side_copy_command
 
 -- multi_outer_join_third_reference is a single shard table