Lowercase \copy to match PostgreSQL's style for local/psql-level functions

src/bin/scripts/copy_to_distributed_table

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 echo "WARNING: copy_to_distributed_table is now deprecated." >&2
-echo "HINT: You can use \\COPY on distributed tables, which is a lot faster." >&2
+echo "HINT: You can use \\copy on distributed tables, which is a lot faster." >&2
 
 # make bash behave
 set -euo pipefail

src/test/regress/expected/multi_agg_approximate_distinct.out

@@ -123,7 +123,7 @@ SELECT master_create_worker_shards('test_count_distinct_schema.nation_hash', 4,
  
 (1 row)
 
-\COPY test_count_distinct_schema.nation_hash FROM STDIN with delimiter '|';
+\copy test_count_distinct_schema.nation_hash FROM STDIN with delimiter '|';
 SET search_path TO public;
 SET citus.count_distinct_error_rate TO 0.01;
 SELECT COUNT (DISTINCT n_regionkey) FROM test_count_distinct_schema.nation_hash;

src/test/regress/expected/multi_schema_support.out

@@ -13,7 +13,7 @@ CREATE TABLE public.nation_local(
     n_regionkey integer not null,
     n_comment varchar(152)
 );
-\COPY public.nation_local FROM STDIN with delimiter '|';
+\copy public.nation_local FROM STDIN with delimiter '|';
 CREATE TABLE test_schema_support.nation_append(
     n_nationkey integer not null,
     n_name char(25) not null,
@@ -122,7 +122,7 @@ SELECT master_create_distributed_table('nation_append_search_path', 'n_nationkey
  
 (1 row)
 
-\COPY nation_append_search_path FROM STDIN with delimiter '|';
+\copy nation_append_search_path FROM STDIN with delimiter '|';
 -- create shard with master_create_worker_shards
 CREATE TABLE test_schema_support.nation_hash(
     n_nationkey integer not null,
@@ -192,7 +192,7 @@ SELECT * FROM nation_hash WHERE n_nationkey = 7;
 
 -- test UDFs with schemas
 SET search_path TO public;
-\COPY test_schema_support.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash FROM STDIN with delimiter '|';
 -- create UDF in master node
 CREATE OR REPLACE FUNCTION dummyFunction(theValue integer)
     RETURNS text AS
@@ -446,7 +446,7 @@ SELECT master_create_worker_shards('test_schema_support.nation_hash_collation',
  
 (1 row)
 
-\COPY test_schema_support.nation_hash_collation FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash_collation FROM STDIN with delimiter '|';
 SELECT * FROM test_schema_support.nation_hash_collation;
  n_nationkey |          n_name           | n_regionkey |                                                  n_comment                                                  
 -------------+---------------------------+-------------+-------------------------------------------------------------------------------------------------------------
@@ -489,7 +489,7 @@ SELECT master_create_worker_shards('nation_hash_collation_search_path', 4, 2);
  
 (1 row)
 
-\COPY nation_hash_collation_search_path FROM STDIN with delimiter '|';
+\copy nation_hash_collation_search_path FROM STDIN with delimiter '|';
 SELECT * FROM nation_hash_collation_search_path;
  n_nationkey |          n_name           | n_regionkey |                                                  n_comment                                                  
 -------------+---------------------------+-------------+-------------------------------------------------------------------------------------------------------------
@@ -542,7 +542,7 @@ SELECT master_create_worker_shards('test_schema_support.nation_hash_composite_ty
 (1 row)
 
 -- insert some data to verify composite type queries
-\COPY test_schema_support.nation_hash_composite_types FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash_composite_types FROM STDIN with delimiter '|';
 SELECT * FROM test_schema_support.nation_hash_composite_types WHERE test_col = '(a,a)'::test_schema_support.new_composite_type;
  n_nationkey |          n_name           | n_regionkey |                     n_comment                      | test_col 
 -------------+---------------------------+-------------+----------------------------------------------------+----------
@@ -829,7 +829,7 @@ SELECT master_apply_delete_command('DELETE FROM test_schema_support.nation_appen
 \c - - - :master_port
 -- test with search_path is set
 SET search_path TO test_schema_support;
-\COPY nation_append FROM STDIN with delimiter '|';
+\copy nation_append FROM STDIN with delimiter '|';
 SELECT master_apply_delete_command('DELETE FROM nation_append') ;
  master_apply_delete_command 
 -----------------------------
@@ -873,7 +873,7 @@ SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash', 4,
  
 (1 row)
 
-\COPY test_schema_support_join_1.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support_join_1.nation_hash FROM STDIN with delimiter '|';
 SELECT master_create_distributed_table('test_schema_support_join_1.nation_hash_2', 'n_nationkey', 'hash');
  master_create_distributed_table 
 ---------------------------------
@@ -886,7 +886,7 @@ SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash_2', 4
  
 (1 row)
 
-\COPY test_schema_support_join_1.nation_hash_2 FROM STDIN with delimiter '|';
+\copy test_schema_support_join_1.nation_hash_2 FROM STDIN with delimiter '|';
 SELECT master_create_distributed_table('test_schema_support_join_2.nation_hash', 'n_nationkey', 'hash');
  master_create_distributed_table 
 ---------------------------------
@@ -899,7 +899,7 @@ SELECT master_create_worker_shards('test_schema_support_join_2.nation_hash', 4,
  
 (1 row)
 
-\COPY test_schema_support_join_2.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support_join_2.nation_hash FROM STDIN with delimiter '|';
 -- check when search_path is public,
 -- join of two tables which are in different schemas,
 -- join on partition column

src/test/regress/input/multi_agg_distinct.source

@@ -38,8 +38,8 @@ UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14947
 WHERE shardid = :new_shard_id;
 
 SET citus.shard_max_size TO "500MB";
-\COPY lineitem_range FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_range FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_range FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_range FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 RESET citus.shard_max_size;
 
 -- Run aggregate(distinct) on partition column for range partitioned table
@@ -99,8 +99,8 @@ CREATE TABLE lineitem_hash (
 SELECT master_create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 SELECT master_create_worker_shards('lineitem_hash', 4, 1);
 
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 
 -- aggregate(distinct) on partition column is allowed
 

src/test/regress/input/multi_agg_type_conversion.source

@@ -24,7 +24,7 @@ CREATE TABLE aggregate_type (
        interval_value interval not null);
 SELECT master_create_distributed_table('aggregate_type', 'float_value', 'append');
 
-\COPY aggregate_type FROM '@abs_srcdir@/data/agg_type.data'
+\copy aggregate_type FROM '@abs_srcdir@/data/agg_type.data'
 
 -- Test conversions using aggregates on floats and division
 

src/test/regress/input/multi_alter_table_statements.source

@@ -29,7 +29,7 @@ CREATE TABLE lineitem_alter (
 	l_comment varchar(44) not null
 	);
 SELECT master_create_distributed_table('lineitem_alter', 'l_orderkey', 'append');
-\COPY lineitem_alter FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_alter FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 
 -- Verify that we can add columns
 
@@ -57,8 +57,8 @@ SELECT int_column1, count(*) FROM lineitem_alter GROUP BY int_column1;
 ALTER TABLE lineitem_alter ALTER COLUMN float_column SET DEFAULT 1;
 ALTER TABLE lineitem_alter ALTER COLUMN int_column1 DROP DEFAULT;
 
--- \COPY to verify that default values take effect
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+-- \copy to verify that default values take effect
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 
 SELECT float_column, count(*) FROM lineitem_alter GROUP BY float_column;
 SELECT int_column1, count(*) FROM lineitem_alter GROUP BY int_column1;
@@ -71,17 +71,17 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 SET NOT NULL;
 -- Drop default so that NULLs will be inserted for this column
 ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP DEFAULT;
 
--- \COPY should fail because it will try to insert NULLs for a NOT NULL column
+-- \copy should fail because it will try to insert NULLs for a NOT NULL column
 -- Note, this operation will create a table on the workers but it won't be in the metadata
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 
 -- Verify that DROP NOT NULL works
 
 ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP NOT NULL;
 \d lineitem_alter
 
--- \COPY should succeed now 
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+-- \copy should succeed now 
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 SELECT count(*) from lineitem_alter;
 
 -- Verify that SET DATA TYPE works

src/test/regress/input/multi_append_table_to_shard.source

@@ -32,12 +32,12 @@ SELECT master_create_worker_shards('multi_append_table_to_shard_right_hash', 1,
 
 -- Replicate 'left' table on both workers
 SELECT set_config('citus.shard_replication_factor', '2', false);
-\COPY multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
-\COPY multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
 
 -- Place 'right' table only on the primary worker
 SELECT set_config('citus.shard_replication_factor', '1', false);
-\COPY multi_append_table_to_shard_right FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_right FROM '@abs_srcdir@/data/agg.data'
 
 -- Reset shard replication factor to ensure tasks will be assigned to both workers
 SELECT set_config('citus.shard_replication_factor', '2', false);

src/test/regress/input/multi_complex_count_distinct.source

@@ -29,8 +29,8 @@ CREATE TABLE lineitem_hash (
 SELECT master_create_distributed_table('lineitem_hash', 'l_orderkey', 'hash');
 SELECT master_create_worker_shards('lineitem_hash', 8, 1);
 
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 
 SET citus.task_executor_type to "task-tracker";
 

src/test/regress/input/multi_copy.source

@@ -105,7 +105,7 @@ COPY customer_copy_hash FROM '@abs_srcdir@/data/customer.2.data' WITH (DELIMITER
 SELECT count(*) FROM customer_copy_hash;
 
 -- Test client-side copy from file
-\COPY customer_copy_hash FROM '@abs_srcdir@/data/customer.3.data' WITH (DELIMITER '|');
+\copy customer_copy_hash FROM '@abs_srcdir@/data/customer.3.data' WITH (DELIMITER '|');
 
 -- Confirm that data was copied
 SELECT count(*) FROM customer_copy_hash;

src/test/regress/input/multi_create_schema.source

@@ -11,6 +11,6 @@ CREATE TABLE nation (
 	n_comment varchar(152));
 SELECT master_create_distributed_table('tpch.nation', 'n_nationkey', 'append');
 
-\COPY tpch.nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
+\copy tpch.nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
 
 SELECT count(*) from tpch.nation;

src/test/regress/input/multi_large_shardid.source

@@ -13,8 +13,8 @@ ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 9000000;
 
 -- Stage additional data to start using large shard identifiers.
 
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 
 -- Query #1 from the TPC-H decision support benchmark.
 

src/test/regress/input/multi_master_delete_protocol.source

@@ -19,9 +19,9 @@ CREATE TABLE customer_delete_protocol (
         c_comment varchar(117) not null);
 SELECT master_create_distributed_table('customer_delete_protocol', 'c_custkey', 'append');
 
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
 
 -- Testing master_apply_delete_command
 -- Check that we don't support conditions on columns other than partition key.

src/test/regress/input/multi_outer_join.source

@@ -53,11 +53,11 @@ FROM
 	multi_outer_join_left a LEFT JOIN multi_outer_join_third b ON (l_custkey = t_custkey);
 
 -- Left table is a large table
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-10.data' with delimiter '|'
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-10.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
 
 -- Right table is a small table
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
 
 -- Make sure we do not crash if one table has no shards
 SELECT
@@ -71,7 +71,7 @@ FROM
 	multi_outer_join_third a LEFT JOIN multi_outer_join_right b ON (r_custkey = t_custkey);
 
 -- Third table is a single shard table with all data
-\COPY multi_outer_join_third FROM '@abs_srcdir@/data/customer-1-30.data' with delimiter '|'
+\copy multi_outer_join_third FROM '@abs_srcdir@/data/customer-1-30.data' with delimiter '|'
 
 -- Regular outer join should return results for all rows
 SELECT
@@ -150,7 +150,7 @@ FROM
 
 
 -- Turn the right table into a large table
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
 
 
 -- Shards do not have 1-1 matching. We should error here.
@@ -164,11 +164,11 @@ SELECT * FROM master_apply_delete_command('DELETE FROM multi_outer_join_left');
 SELECT * FROM master_apply_delete_command('DELETE FROM multi_outer_join_right');
 
 -- reload shards with 1-1 matching
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
 
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
 
 -- multi_outer_join_third is a single shard table
 
@@ -409,7 +409,7 @@ ORDER BY cnt DESC, l1.l_custkey DESC
 LIMIT 20;
 
 -- Add a shard to the left table that overlaps with multiple shards in the right
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
 
 
 -- All outer joins should error out

src/test/regress/input/multi_stage_data.source

@@ -9,13 +9,13 @@
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 290000;
 ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 290000;
 
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 
-\COPY orders FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
-\COPY orders FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
+\copy orders FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
+\copy orders FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
 
-\COPY customer FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
-\COPY nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
-\COPY part FROM '@abs_srcdir@/data/part.data' with delimiter '|'
-\COPY supplier FROM '@abs_srcdir@/data/supplier.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
+\copy part FROM '@abs_srcdir@/data/part.data' with delimiter '|'
+\copy supplier FROM '@abs_srcdir@/data/supplier.data' with delimiter '|'

src/test/regress/input/multi_stage_large_records.source

@@ -15,7 +15,7 @@ SET citus.shard_max_size TO "256kB";
 CREATE TABLE large_records_table (data_id integer, data text);
 SELECT master_create_distributed_table('large_records_table', 'data_id', 'append');
 
-\COPY large_records_table FROM '@abs_srcdir@/data/large_records.data' with delimiter '|'
+\copy large_records_table FROM '@abs_srcdir@/data/large_records.data' with delimiter '|'
 
 SELECT shardminvalue, shardmaxvalue FROM pg_dist_shard, pg_class 
 	WHERE pg_class.oid=logicalrelid AND relname='large_records_table'

src/test/regress/input/multi_stage_more_data.source

@@ -11,6 +11,6 @@ ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 280000;
 -- staging causes the planner to consider customer and part tables as large, and
 -- evaluate plans where some of the underlying tables need to be repartitioned.
 
-\COPY customer FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
-\COPY customer FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
-\COPY part FROM '@abs_srcdir@/data/part.more.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
+\copy part FROM '@abs_srcdir@/data/part.more.data' with delimiter '|'

src/test/regress/input/multi_subquery.source

@@ -101,11 +101,11 @@ WHERE shardid = :new_shard_id;
 
 SET citus.shard_max_size TO "1MB";
 
-\COPY lineitem_subquery FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_subquery FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_subquery FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_subquery FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 
-\COPY orders_subquery FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
-\COPY orders_subquery FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
+\copy orders_subquery FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
+\copy orders_subquery FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
 
 -- Check that we error out if shard min/max values are not exactly same.
 

src/test/regress/output/multi_agg_distinct.source

@@ -36,8 +36,8 @@ SELECT master_create_empty_shard('lineitem_range') AS new_shard_id
 UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14947
 WHERE shardid = :new_shard_id;
 SET citus.shard_max_size TO "500MB";
-\COPY lineitem_range FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_range FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_range FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_range FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 RESET citus.shard_max_size;
 -- Run aggregate(distinct) on partition column for range partitioned table
 SELECT count(distinct l_orderkey) FROM lineitem_range;
@@ -139,8 +139,8 @@ SELECT master_create_worker_shards('lineitem_hash', 4, 1);
  
 (1 row)
 
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 -- aggregate(distinct) on partition column is allowed
 SELECT count(distinct l_orderkey) FROM lineitem_hash;
  count 

src/test/regress/output/multi_agg_type_conversion.source

@@ -41,7 +41,7 @@ SELECT master_create_distributed_table('aggregate_type', 'float_value', 'append'
  
 (1 row)
 
-\COPY aggregate_type FROM '@abs_srcdir@/data/agg_type.data'
+\copy aggregate_type FROM '@abs_srcdir@/data/agg_type.data'
 -- Test conversions using aggregates on floats and division
 SELECT min(float_value), max(float_value),
        sum(float_value), count(float_value), avg(float_value)

src/test/regress/output/multi_alter_table_statements.source

@@ -30,7 +30,7 @@ SELECT master_create_distributed_table('lineitem_alter', 'l_orderkey', 'append')
  
 (1 row)
 
-\COPY lineitem_alter FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_alter FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 -- Verify that we can add columns
 ALTER TABLE lineitem_alter ADD COLUMN float_column FLOAT;
 NOTICE:  using one-phase commit for distributed DDL commands
@@ -121,8 +121,8 @@ ALTER TABLE lineitem_alter ALTER COLUMN float_column SET DEFAULT 1;
 NOTICE:  using one-phase commit for distributed DDL commands
 HINT:  You can enable two-phase commit for extra safety with: SET citus.multi_shard_commit_protocol TO '2pc'
 ALTER TABLE lineitem_alter ALTER COLUMN int_column1 DROP DEFAULT;
--- \COPY to verify that default values take effect
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+-- \copy to verify that default values take effect
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 SELECT float_column, count(*) FROM lineitem_alter GROUP BY float_column;
  float_column | count 
 --------------+-------
@@ -167,9 +167,9 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 SET NOT NULL;
 
 -- Drop default so that NULLs will be inserted for this column
 ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP DEFAULT;
--- \COPY should fail because it will try to insert NULLs for a NOT NULL column
+-- \copy should fail because it will try to insert NULLs for a NOT NULL column
 -- Note, this operation will create a table on the workers but it won't be in the metadata
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 ERROR:  null value in column "int_column2" violates not-null constraint
 DETAIL:  Failing row contains (1, 155190, 7706, 1, 17.00, 21168.23, 0.04, 0.02, N, O, 1996-03-13, 1996-02-12, 1996-03-22, DELIVER IN PERSON        , TRUCK     , egular courts above the, 1, null, null, null, null).
 -- Verify that DROP NOT NULL works
@@ -200,8 +200,8 @@ ALTER TABLE lineitem_alter ALTER COLUMN int_column2 DROP NOT NULL;
  int_column2     | integer               | 
  null_column     | integer               | 
 
--- \COPY should succeed now 
-\COPY lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+-- \copy should succeed now 
+\copy lineitem_alter (l_orderkey, l_partkey, l_suppkey, l_linenumber, l_quantity, l_extendedprice, l_discount, l_tax, l_returnflag, l_linestatus, l_shipdate, l_commitdate, l_receiptdate, l_shipinstruct, l_shipmode, l_comment) FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
 SELECT count(*) from lineitem_alter;
  count 
 -------

src/test/regress/output/multi_append_table_to_shard.source

@@ -50,8 +50,8 @@ SELECT set_config('citus.shard_replication_factor', '2', false);
  2
 (1 row)
 
-\COPY multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
-\COPY multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_left FROM '@abs_srcdir@/data/agg.data'
 -- Place 'right' table only on the primary worker
 SELECT set_config('citus.shard_replication_factor', '1', false);
  set_config 
@@ -59,7 +59,7 @@ SELECT set_config('citus.shard_replication_factor', '1', false);
  1
 (1 row)
 
-\COPY multi_append_table_to_shard_right FROM '@abs_srcdir@/data/agg.data'
+\copy multi_append_table_to_shard_right FROM '@abs_srcdir@/data/agg.data'
 -- Reset shard replication factor to ensure tasks will be assigned to both workers
 SELECT set_config('citus.shard_replication_factor', '2', false);
  set_config 

src/test/regress/output/multi_complex_count_distinct.source

@@ -34,8 +34,8 @@ SELECT master_create_worker_shards('lineitem_hash', 8, 1);
  
 (1 row)
 
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_hash FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 SET citus.task_executor_type to "task-tracker";
 -- count(distinct) is supported on top level query if there
 -- is a grouping on the partition key	

src/test/regress/output/multi_copy.source

@@ -118,7 +118,7 @@ SELECT count(*) FROM customer_copy_hash;
 (1 row)
 
 -- Test client-side copy from file
-\COPY customer_copy_hash FROM '@abs_srcdir@/data/customer.3.data' WITH (DELIMITER '|');
+\copy customer_copy_hash FROM '@abs_srcdir@/data/customer.3.data' WITH (DELIMITER '|');
 -- Confirm that data was copied
 SELECT count(*) FROM customer_copy_hash;
  count 

src/test/regress/output/multi_create_schema.source

@@ -12,7 +12,7 @@ SELECT master_create_distributed_table('tpch.nation', 'n_nationkey', 'append');
  
 (1 row)
 
-\COPY tpch.nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
+\copy tpch.nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
 SELECT count(*) from tpch.nation;
  count 
 -------

src/test/regress/output/multi_large_shardid.source

@@ -7,8 +7,8 @@
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 100200300400500;
 ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 9000000;
 -- Stage additional data to start using large shard identifiers.
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
 -- Query #1 from the TPC-H decision support benchmark.
 SELECT
 	l_returnflag,

src/test/regress/output/multi_master_delete_protocol.source

@@ -19,9 +19,9 @@ SELECT master_create_distributed_table('customer_delete_protocol', 'c_custkey',
  
 (1 row)
 
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
-\COPY customer_delete_protocol FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
+\copy customer_delete_protocol FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
 -- Testing master_apply_delete_command
 -- Check that we don't support conditions on columns other than partition key.
 SELECT master_apply_delete_command('DELETE FROM customer_delete_protocol

src/test/regress/output/multi_outer_join.source

@@ -62,10 +62,10 @@ FROM
 ERROR:  cannot perform distributed planning on this query
 DETAIL:  Shards of relations in outer join queries must have 1-to-1 shard partitioning
 -- Left table is a large table
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-10.data' with delimiter '|'
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-10.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
 -- Right table is a small table
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
 -- Make sure we do not crash if one table has no shards
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -84,7 +84,7 @@ LOG:  join order: [ "multi_outer_join_third" ][ broadcast join "multi_outer_join
 (1 row)
 
 -- Third table is a single shard table with all data
-\COPY multi_outer_join_third FROM '@abs_srcdir@/data/customer-1-30.data' with delimiter '|'
+\copy multi_outer_join_third FROM '@abs_srcdir@/data/customer-1-30.data' with delimiter '|'
 -- Regular outer join should return results for all rows
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -202,7 +202,7 @@ LOG:  join order: [ "multi_outer_join_left" ][ broadcast join "multi_outer_join_
 (1 row)
 
 -- Turn the right table into a large table
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
 -- Shards do not have 1-1 matching. We should error here.
 SELECT
 	min(l_custkey), max(l_custkey)
@@ -224,10 +224,10 @@ SELECT * FROM master_apply_delete_command('DELETE FROM multi_outer_join_right');
 (1 row)
 
 -- reload shards with 1-1 matching
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
-\COPY multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-1-15.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-11-20.data' with delimiter '|'
+\copy multi_outer_join_right FROM '@abs_srcdir@/data/customer-21-30.data' with delimiter '|'
 -- multi_outer_join_third is a single shard table
 -- Regular left join should work as expected
 SELECT
@@ -754,7 +754,7 @@ LIMIT 20;
 ERROR:  cannot perform distributed planning on this query
 DETAIL:  Subqueries in outer joins are not supported
 -- Add a shard to the left table that overlaps with multiple shards in the right
-\COPY multi_outer_join_left FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy multi_outer_join_left FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
 -- All outer joins should error out
 SELECT
 	min(l_custkey), max(l_custkey)

src/test/regress/output/multi_stage_data.source

@@ -7,11 +7,11 @@
 -- policy is left to the default value (round-robin) to test the common install case.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 290000;
 ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 290000;
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
-\COPY orders FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
-\COPY orders FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
-\COPY customer FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
-\COPY nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
-\COPY part FROM '@abs_srcdir@/data/part.data' with delimiter '|'
-\COPY supplier FROM '@abs_srcdir@/data/supplier.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy orders FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
+\copy orders FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.1.data' with delimiter '|'
+\copy nation FROM '@abs_srcdir@/data/nation.data' with delimiter '|'
+\copy part FROM '@abs_srcdir@/data/part.data' with delimiter '|'
+\copy supplier FROM '@abs_srcdir@/data/supplier.data' with delimiter '|'

src/test/regress/output/multi_stage_large_records.source

@@ -14,7 +14,7 @@ SELECT master_create_distributed_table('large_records_table', 'data_id', 'append
  
 (1 row)
 
-\COPY large_records_table FROM '@abs_srcdir@/data/large_records.data' with delimiter '|'
+\copy large_records_table FROM '@abs_srcdir@/data/large_records.data' with delimiter '|'
 SELECT shardminvalue, shardmaxvalue FROM pg_dist_shard, pg_class 
 	WHERE pg_class.oid=logicalrelid AND relname='large_records_table'
 	ORDER BY shardid;

src/test/regress/output/multi_stage_more_data.source

@@ -6,6 +6,6 @@ ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 280000;
 -- We stage more data to customer and part tables to test distributed joins. The
 -- staging causes the planner to consider customer and part tables as large, and
 -- evaluate plans where some of the underlying tables need to be repartitioned.
-\COPY customer FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
-\COPY customer FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
-\COPY part FROM '@abs_srcdir@/data/part.more.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.2.data' with delimiter '|'
+\copy customer FROM '@abs_srcdir@/data/customer.3.data' with delimiter '|'
+\copy part FROM '@abs_srcdir@/data/part.more.data' with delimiter '|'

src/test/regress/output/multi_subquery.source

@@ -100,10 +100,10 @@ SELECT master_create_empty_shard('orders_subquery') AS new_shard_id
 UPDATE pg_dist_shard SET shardminvalue = 8997, shardmaxvalue = 14946
 WHERE shardid = :new_shard_id;
 SET citus.shard_max_size TO "1MB";
-\COPY lineitem_subquery FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
-\COPY lineitem_subquery FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
-\COPY orders_subquery FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
-\COPY orders_subquery FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
+\copy lineitem_subquery FROM '@abs_srcdir@/data/lineitem.1.data' with delimiter '|'
+\copy lineitem_subquery FROM '@abs_srcdir@/data/lineitem.2.data' with delimiter '|'
+\copy orders_subquery FROM '@abs_srcdir@/data/orders.1.data' with delimiter '|'
+\copy orders_subquery FROM '@abs_srcdir@/data/orders.2.data' with delimiter '|'
 -- Check that we error out if shard min/max values are not exactly same.
 SELECT
 	avg(unit_price)

src/test/regress/sql/multi_agg_approximate_distinct.sql

@@ -65,7 +65,7 @@ CREATE TABLE test_count_distinct_schema.nation_hash(
 SELECT master_create_distributed_table('test_count_distinct_schema.nation_hash', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('test_count_distinct_schema.nation_hash', 4, 2);
 
-\COPY test_count_distinct_schema.nation_hash FROM STDIN with delimiter '|';
+\copy test_count_distinct_schema.nation_hash FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 

src/test/regress/sql/multi_schema_support.sql

@@ -18,7 +18,7 @@ CREATE TABLE public.nation_local(
     n_comment varchar(152)
 );
 
-\COPY public.nation_local FROM STDIN with delimiter '|';
+\copy public.nation_local FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -85,7 +85,7 @@ CREATE TABLE nation_append_search_path(
 );
 SELECT master_create_distributed_table('nation_append_search_path', 'n_nationkey', 'append');
 
-\COPY nation_append_search_path FROM STDIN with delimiter '|';
+\copy nation_append_search_path FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -146,7 +146,7 @@ SELECT * FROM nation_hash WHERE n_nationkey = 7;
 -- test UDFs with schemas
 SET search_path TO public;
 
-\COPY test_schema_support.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -337,7 +337,7 @@ CREATE TABLE test_schema_support.nation_hash_collation(
 SELECT master_create_distributed_table('test_schema_support.nation_hash_collation', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('test_schema_support.nation_hash_collation', 4, 2);
 
-\COPY test_schema_support.nation_hash_collation FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash_collation FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -360,7 +360,7 @@ CREATE TABLE nation_hash_collation_search_path(
 SELECT master_create_distributed_table('nation_hash_collation_search_path', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('nation_hash_collation_search_path', 4, 2);
 
-\COPY nation_hash_collation_search_path FROM STDIN with delimiter '|';
+\copy nation_hash_collation_search_path FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -396,7 +396,7 @@ SELECT master_create_distributed_table('test_schema_support.nation_hash_composit
 SELECT master_create_worker_shards('test_schema_support.nation_hash_composite_types', 4, 2);
 
 -- insert some data to verify composite type queries
-\COPY test_schema_support.nation_hash_composite_types FROM STDIN with delimiter '|';
+\copy test_schema_support.nation_hash_composite_types FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai|(a,a)
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon|(a,b)
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special |(a,c)
@@ -531,7 +531,7 @@ SELECT master_apply_delete_command('DELETE FROM test_schema_support.nation_appen
 -- test with search_path is set
 SET search_path TO test_schema_support;
 
-\COPY nation_append FROM STDIN with delimiter '|';
+\copy nation_append FROM STDIN with delimiter '|';
 0|ALGERIA|0| haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -578,7 +578,7 @@ CREATE TABLE test_schema_support_join_2.nation_hash (
 SELECT master_create_distributed_table('test_schema_support_join_1.nation_hash', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash', 4, 1);
 
-\COPY test_schema_support_join_1.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support_join_1.nation_hash FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -590,7 +590,7 @@ SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash', 4,
 SELECT master_create_distributed_table('test_schema_support_join_1.nation_hash_2', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash_2', 4, 1);
 
-\COPY test_schema_support_join_1.nation_hash_2 FROM STDIN with delimiter '|';
+\copy test_schema_support_join_1.nation_hash_2 FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special 
@@ -602,7 +602,7 @@ SELECT master_create_worker_shards('test_schema_support_join_1.nation_hash_2', 4
 SELECT master_create_distributed_table('test_schema_support_join_2.nation_hash', 'n_nationkey', 'hash');
 SELECT master_create_worker_shards('test_schema_support_join_2.nation_hash', 4, 1);
 
-\COPY test_schema_support_join_2.nation_hash FROM STDIN with delimiter '|';
+\copy test_schema_support_join_2.nation_hash FROM STDIN with delimiter '|';
 0|ALGERIA|0|haggle. carefully final deposits detect slyly agai
 1|ARGENTINA|1|al foxes promise slyly according to the regular accounts. bold requests alon
 2|BRAZIL|1|y alongside of the pending deposits. carefully special packages are about the ironic forges. slyly special