Re-order some regression test scripts for more parallelism.

Move the strings, numerology, insert, insert_conflict, select and
errors tests to be parts of nearby parallel groups, instead of
executing by themselves.  (Moving "select" required adjusting the
constraints test, which uses a table named "tmp" as select also
does.  There don't seem to be any other conflicts.)

Move psql and stats_ext to the next parallel group, where the rules
test also has a long runtime.  To make it safe to run stats_ext in
parallel with rules, I adjusted the latter to only dump views/rules
from the pg_catalog and public schemas, which was what it was doing
anyway.  stats_ext makes some views in a transient schema, which now
will not affect rules.

Reorder serial_schedule to match parallel_schedule.

Discussion: https://postgr.es/m/735.1554935715@sss.pgh.pa.us

src/test/regress/expected/rules.out

@@ -1282,7 +1282,9 @@ drop table cchild;
 --
 -- temporarily disable fancy output, so view changes create less diff noise
 \a\t
-SELECT viewname, definition FROM pg_views WHERE schemaname <> 'information_schema' ORDER BY viewname;
+SELECT viewname, definition FROM pg_views
+WHERE schemaname IN ('pg_catalog', 'public')
+ORDER BY viewname;
 iexit| SELECT ih.name,
     ih.thepath,
     interpt_pp(ih.thepath, r.thepath) AS exit
@@ -2418,7 +2420,8 @@ toyemp| SELECT emp.name,
     (12 * emp.salary) AS annualsal
    FROM emp;
 SELECT tablename, rulename, definition FROM pg_rules
-	ORDER BY tablename, rulename;
+WHERE schemaname IN ('pg_catalog', 'public')
+ORDER BY tablename, rulename;
 pg_settings|pg_settings_n|CREATE RULE pg_settings_n AS
     ON UPDATE TO pg_catalog.pg_settings DO INSTEAD NOTHING;
 pg_settings|pg_settings_u|CREATE RULE pg_settings_u AS

src/test/regress/expected/sanity_check.out

@@ -206,6 +206,7 @@ time_tbl|f
 timestamp_tbl|f
 timestamptz_tbl|f
 timetz_tbl|f
+tmp|f
 varchar_tbl|f
 view_base_table|t
 -- restore normal output mode

src/test/regress/input/constraints.source

@@ -201,7 +201,7 @@ DELETE FROM INSERT_TBL;
 
 ALTER SEQUENCE INSERT_SEQ RESTART WITH 4;
 
-CREATE TABLE tmp (xd INT, yd TEXT, zd INT);
+CREATE TEMP TABLE tmp (xd INT, yd TEXT, zd INT);
 
 INSERT INTO tmp VALUES (null, 'Y', null);
 INSERT INTO tmp VALUES (5, '!check failed', null);

src/test/regress/output/constraints.source

@@ -291,7 +291,7 @@ NOTICE:  drop cascades to table atacc2
 --
 DELETE FROM INSERT_TBL;
 ALTER SEQUENCE INSERT_SEQ RESTART WITH 4;
-CREATE TABLE tmp (xd INT, yd TEXT, zd INT);
+CREATE TEMP TABLE tmp (xd INT, yd TEXT, zd INT);
 INSERT INTO tmp VALUES (null, 'Y', null);
 INSERT INTO tmp VALUES (5, '!check failed', null);
 INSERT INTO tmp VALUES (null, 'try again', null);

src/test/regress/parallel_schedule

@@ -15,15 +15,12 @@ test: tablespace
 # ----------
 test: boolean char name varchar text int2 int4 int8 oid float4 float8 bit numeric txid uuid enum money rangetypes pg_lsn regproc
 
-# Depends on things setup during char, varchar and text
-test: strings
-# Depends on int2, int4, int8, float4, float8
-test: numerology
-
 # ----------
 # The second group of parallel tests
+# strings depends on char, varchar and text
+# numerology depends on int2, int4, int8, float4, float8
 # ----------
-test: point lseg line box path polygon circle date time timetz timestamp timestamptz interval inet macaddr macaddr8 tstypes fsm
+test: strings numerology point lseg line box path polygon circle date time timetz timestamp timestamptz interval inet macaddr macaddr8 tstypes fsm
 
 # ----------
 # Another group of parallel tests
@@ -35,8 +32,6 @@ test: geometry horology regex oidjoins type_sanity opr_sanity misc_sanity commen
 # ----------
 # These four each depend on the previous one
 # ----------
-test: insert
-test: insert_conflict
 test: create_function_1
 test: create_type
 test: create_table
@@ -48,19 +43,19 @@ test: create_function_2
 # execute two copy tests parallel, to check that copy itself
 # is concurrent safe.
 # ----------
-test: copy copyselect copydml
+test: copy copyselect copydml insert insert_conflict
 
 # ----------
 # More groups of parallel tests
 # ----------
 test: create_misc create_operator create_procedure
-# These depend on the above two
+# These depend on create_misc and create_operator
 test: create_index create_index_spgist create_view index_including index_including_gist
 
 # ----------
 # Another group of parallel tests
 # ----------
-test: create_aggregate create_function_3 create_cast constraints triggers inherit typed_table vacuum drop_if_exists updatable_views rolenames roleattributes create_am hash_func
+test: create_aggregate create_function_3 create_cast constraints triggers select inherit typed_table vacuum drop_if_exists updatable_views rolenames roleattributes create_am hash_func errors
 
 # ----------
 # sanity_check does a vacuum, affecting the sort order of SELECT *
@@ -68,18 +63,12 @@ test: create_aggregate create_function_3 create_cast constraints triggers inheri
 # ----------
 test: sanity_check
 
-# ----------
-# Believe it or not, select creates a table, subsequent
-# tests need.
-# ----------
-test: errors
-test: select
-ignore: random
-
 # ----------
 # Another group of parallel tests
+# Note: the ignore: line does not run random, just mark it as ignorable
 # ----------
-test: select_into select_distinct select_distinct_on select_implicit select_having subselect union case join aggregates transactions random portals arrays btree_index hash_index update namespace prepared_xacts delete
+ignore: random
+test: select_into select_distinct select_distinct_on select_implicit select_having subselect union case join aggregates transactions random portals arrays btree_index hash_index update delete namespace prepared_xacts
 
 # ----------
 # Another group of parallel tests
@@ -89,10 +78,11 @@ test: brin gin gist spgist privileges init_privs security_label collate matview
 # ----------
 # Another group of parallel tests
 # ----------
-test: create_table_like alter_generic alter_operator misc psql async dbsize misc_functions sysviews tsrf tidscan stats_ext
+test: create_table_like alter_generic alter_operator misc async dbsize misc_functions sysviews tsrf tidscan
 
-# rules cannot run concurrently with any test that creates a view
-test: rules psql_crosstab amutils
+# rules cannot run concurrently with any test that creates
+# a view or rule in the public schema
+test: rules psql psql_crosstab amutils stats_ext
 
 # run by itself so it can run parallel workers
 test: select_parallel

src/test/regress/serial_schedule

@@ -50,8 +50,6 @@ test: opr_sanity
 test: misc_sanity
 test: comments
 test: expressions
-test: insert
-test: insert_conflict
 test: create_function_1
 test: create_type
 test: create_table
@@ -59,19 +57,22 @@ test: create_function_2
 test: copy
 test: copyselect
 test: copydml
+test: insert
+test: insert_conflict
 test: create_misc
 test: create_operator
 test: create_procedure
 test: create_index
 test: create_index_spgist
+test: create_view
 test: index_including
 test: index_including_gist
-test: create_view
 test: create_aggregate
 test: create_function_3
 test: create_cast
 test: constraints
 test: triggers
+test: select
 test: inherit
 test: typed_table
 test: vacuum
@@ -81,9 +82,8 @@ test: rolenames
 test: roleattributes
 test: create_am
 test: hash_func
-test: sanity_check
 test: errors
-test: select
+test: sanity_check
 test: select_into
 test: select_distinct
 test: select_distinct_on
@@ -129,21 +129,21 @@ test: create_table_like
 test: alter_generic
 test: alter_operator
 test: misc
-test: psql
 test: async
 test: dbsize
 test: misc_functions
 test: sysviews
 test: tsrf
 test: tidscan
-test: stats_ext
 test: rules
+test: psql
 test: psql_crosstab
+test: amutils
+test: stats_ext
 test: select_parallel
 test: write_parallel
 test: publication
 test: subscription
-test: amutils
 test: select_views
 test: portals_p2
 test: foreign_key
@@ -159,14 +159,14 @@ test: window
 test: xmlmap
 test: functional_deps
 test: advisory_lock
+test: indirect_toast
+test: equivclass
 test: json
 test: jsonb
 test: json_encoding
 test: jsonpath
 test: jsonpath_encoding
 test: jsonb_jsonpath
-test: indirect_toast
-test: equivclass
 test: plancache
 test: limit
 test: plpgsql

src/test/regress/sql/rules.sql

@@ -775,10 +775,13 @@ drop table cchild;
 -- temporarily disable fancy output, so view changes create less diff noise
 \a\t
 
-SELECT viewname, definition FROM pg_views WHERE schemaname <> 'information_schema' ORDER BY viewname;
+SELECT viewname, definition FROM pg_views
+WHERE schemaname IN ('pg_catalog', 'public')
+ORDER BY viewname;
 
 SELECT tablename, rulename, definition FROM pg_rules
-	ORDER BY tablename, rulename;
+WHERE schemaname IN ('pg_catalog', 'public')
+ORDER BY tablename, rulename;
 
 -- restore normal output mode
 \a\t