Modify version-output tests for PostgreSQL 11

Basically we just care whether the running version is before or after
PostgreSQL 10, so testing the major version against 9 and printing a
boolean is sufficient.

src/test/regress/expected/multi_explain.out

@@ -2,11 +2,12 @@
 -- MULTI_EXPLAIN
 --
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 570000;
--- print major version to make version-specific tests clear
-SELECT substring(version(), '\d+(?:\.\d+)?') AS major_version;
- major_version 
----------------
- 10
+-- print whether we're using version > 9 to make version-specific tests clear
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ t
 (1 row)
 
 \a\t

src/test/regress/expected/multi_explain_0.out

@@ -2,11 +2,12 @@
 -- MULTI_EXPLAIN
 --
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 570000;
--- print major version to make version-specific tests clear
-SELECT substring(version(), '\d+(?:\.\d+)?') AS major_version;
- major_version 
----------------
- 9.6
+-- print whether we're using version > 9 to make version-specific tests clear
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ f
 (1 row)
 
 \a\t

src/test/regress/expected/multi_large_table_join_planning.out

@@ -7,12 +7,12 @@
 -- executor here, as we cannot run repartition jobs with real time executor.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 690000;
 SET citus.enable_unique_job_ids TO off;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 10
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ t
 (1 row)
 
 BEGIN;

src/test/regress/expected/multi_large_table_join_planning_0.out

@@ -7,12 +7,12 @@
 -- executor here, as we cannot run repartition jobs with real time executor.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 690000;
 SET citus.enable_unique_job_ids TO off;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 9
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ f
 (1 row)
 
 BEGIN;

src/test/regress/expected/multi_large_table_task_assignment.out

@@ -6,12 +6,12 @@
 -- from a sql task to its depended tasks. Note that we set the executor type to task
 -- tracker executor here, as we cannot run repartition jobs with real time executor.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 710000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 10
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ t
 (1 row)
 
 BEGIN;

src/test/regress/expected/multi_large_table_task_assignment_0.out

@@ -6,12 +6,12 @@
 -- from a sql task to its depended tasks. Note that we set the executor type to task
 -- tracker executor here, as we cannot run repartition jobs with real time executor.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 710000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 9
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ f
 (1 row)
 
 BEGIN;

src/test/regress/expected/multi_null_minmax_value_pruning.out

@@ -4,12 +4,12 @@
 -- This test checks that we can handle null min/max values in shard statistics
 -- and that we don't partition or join prune shards that have null values.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 760000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 10
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ t
 (1 row)
 
 SET client_min_messages TO DEBUG2;

src/test/regress/expected/multi_null_minmax_value_pruning_0.out

@@ -4,12 +4,12 @@
 -- This test checks that we can handle null min/max values in shard statistics
 -- and that we don't partition or join prune shards that have null values.
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 760000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 9
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ f
 (1 row)
 
 SET client_min_messages TO DEBUG2;

src/test/regress/expected/multi_task_assignment_policy.out

@@ -2,12 +2,12 @@
 -- MULTI_TASK_ASSIGNMENT
 --
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 880000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 10
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ t
 (1 row)
 
 SET citus.explain_distributed_queries TO off;

src/test/regress/expected/multi_task_assignment_policy_0.out

@@ -2,12 +2,12 @@
 -- MULTI_TASK_ASSIGNMENT
 --
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 880000;
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
- major_version 
----------------
- 9
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
+ version_above_nine 
+--------------------
+ f
 (1 row)
 
 SET citus.explain_distributed_queries TO off;

src/test/regress/sql/multi_create_table_new_features.sql

@@ -2,9 +2,9 @@
 -- MULTI_CREATE_TABLE_NEW_FEATURES
 --
 
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 -- Verify that the GENERATED ... AS IDENTITY feature in PostgreSQL 10
 -- is forbidden in distributed tables.

src/test/regress/sql/multi_explain.sql

@@ -4,8 +4,9 @@
 
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 570000;
 
--- print major version to make version-specific tests clear
-SELECT substring(version(), '\d+(?:\.\d+)?') AS major_version;
+-- print whether we're using version > 9 to make version-specific tests clear
+SHOW server_version \gset
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 \a\t
 

src/test/regress/sql/multi_large_table_join_planning.sql

@@ -10,9 +10,9 @@
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 690000;
 SET citus.enable_unique_job_ids TO off;
 
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 BEGIN;
 SET client_min_messages TO DEBUG4;

src/test/regress/sql/multi_large_table_task_assignment.sql

@@ -9,9 +9,9 @@
 
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 710000;
 
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 
 BEGIN;

src/test/regress/sql/multi_null_minmax_value_pruning.sql

@@ -8,9 +8,9 @@
 
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 760000;
 
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 SET client_min_messages TO DEBUG2;
 SET citus.explain_all_tasks TO on;

src/test/regress/sql/multi_task_assignment_policy.sql

@@ -5,9 +5,9 @@
 
 ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 880000;
 
--- print major version to make version-specific tests clear
+-- print whether we're using version > 9 to make version-specific tests clear
 SHOW server_version \gset
-SELECT substring(:'server_version', '\d+') AS major_version;
+SELECT substring(:'server_version', '\d+')::int > 9 AS version_above_nine;
 
 
 SET citus.explain_distributed_queries TO off;