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Diffstat (limited to '')
| -rw-r--r-- | src/test/regress/sql/guc.sql | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/src/test/regress/sql/guc.sql b/src/test/regress/sql/guc.sql new file mode 100644 index 0000000..dc79761 --- /dev/null +++ b/src/test/regress/sql/guc.sql @@ -0,0 +1,355 @@ +-- pg_regress should ensure that this default value applies; however +-- we can't rely on any specific default value of vacuum_cost_delay +SHOW datestyle; + +-- SET to some nondefault value +SET vacuum_cost_delay TO 40; +SET datestyle = 'ISO, YMD'; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET LOCAL has no effect outside of a transaction +SET LOCAL vacuum_cost_delay TO 50; +SHOW vacuum_cost_delay; +SET LOCAL datestyle = 'SQL'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET LOCAL within a transaction that commits +BEGIN; +SET LOCAL vacuum_cost_delay TO 50; +SHOW vacuum_cost_delay; +SET LOCAL datestyle = 'SQL'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +COMMIT; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET should be reverted after ROLLBACK +BEGIN; +SET vacuum_cost_delay TO 60; +SHOW vacuum_cost_delay; +SET datestyle = 'German'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- Some tests with subtransactions +BEGIN; +SET vacuum_cost_delay TO 70; +SET datestyle = 'MDY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +SAVEPOINT first_sp; +SET vacuum_cost_delay TO 80.1; +SHOW vacuum_cost_delay; +SET datestyle = 'German, DMY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK TO first_sp; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +SAVEPOINT second_sp; +SET vacuum_cost_delay TO '900us'; +SET datestyle = 'SQL, YMD'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +SAVEPOINT third_sp; +SET vacuum_cost_delay TO 100; +SHOW vacuum_cost_delay; +SET datestyle = 'Postgres, MDY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK TO third_sp; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK TO second_sp; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET LOCAL with Savepoints +BEGIN; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +SAVEPOINT sp; +SET LOCAL vacuum_cost_delay TO 30; +SHOW vacuum_cost_delay; +SET LOCAL datestyle = 'Postgres, MDY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK TO sp; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET LOCAL persists through RELEASE (which was not true in 8.0-8.2) +BEGIN; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +SAVEPOINT sp; +SET LOCAL vacuum_cost_delay TO 30; +SHOW vacuum_cost_delay; +SET LOCAL datestyle = 'Postgres, MDY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +RELEASE SAVEPOINT sp; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +ROLLBACK; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- SET followed by SET LOCAL +BEGIN; +SET vacuum_cost_delay TO 40; +SET LOCAL vacuum_cost_delay TO 50; +SHOW vacuum_cost_delay; +SET datestyle = 'ISO, DMY'; +SET LOCAL datestyle = 'Postgres, MDY'; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +COMMIT; +SHOW vacuum_cost_delay; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- +-- Test RESET. We use datestyle because the reset value is forced by +-- pg_regress, so it doesn't depend on the installation's configuration. +-- +SET datestyle = iso, ymd; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; +RESET datestyle; +SHOW datestyle; +SELECT '2006-08-13 12:34:56'::timestamptz; + +-- Test some simple error cases +SET seq_page_cost TO 'NaN'; +SET vacuum_cost_delay TO '10s'; +SET no_such_variable TO 42; + +-- Test "custom" GUCs created on the fly (which aren't really an +-- intended feature, but many people use them). +SHOW custom.my_guc; -- error, not known yet +SET custom.my_guc = 42; +SHOW custom.my_guc; +RESET custom.my_guc; -- this makes it go to empty, not become unknown again +SHOW custom.my_guc; +SET custom.my.qualified.guc = 'foo'; +SHOW custom.my.qualified.guc; +SET custom."bad-guc" = 42; -- disallowed because -c cannot set this name +SHOW custom."bad-guc"; +SET special."weird name" = 'foo'; -- could be allowed, but we choose not to +SHOW special."weird name"; + +-- Check what happens when you try to set a "custom" GUC within the +-- namespace of an extension. +SET plpgsql.extra_foo_warnings = true; -- allowed if plpgsql is not loaded yet +LOAD 'plpgsql'; -- this will throw a warning and delete the variable +SET plpgsql.extra_foo_warnings = true; -- now, it's an error +SHOW plpgsql.extra_foo_warnings; + +-- +-- Test DISCARD TEMP +-- +CREATE TEMP TABLE reset_test ( data text ) ON COMMIT DELETE ROWS; +SELECT relname FROM pg_class WHERE relname = 'reset_test'; +DISCARD TEMP; +SELECT relname FROM pg_class WHERE relname = 'reset_test'; + +-- +-- Test DISCARD ALL +-- + +-- do changes +DECLARE foo CURSOR WITH HOLD FOR SELECT 1; +PREPARE foo AS SELECT 1; +LISTEN foo_event; +SET vacuum_cost_delay = 13; +CREATE TEMP TABLE tmp_foo (data text) ON COMMIT DELETE ROWS; +CREATE ROLE regress_guc_user; +SET SESSION AUTHORIZATION regress_guc_user; +-- look changes +SELECT pg_listening_channels(); +SELECT name FROM pg_prepared_statements; +SELECT name FROM pg_cursors; +SHOW vacuum_cost_delay; +SELECT relname from pg_class where relname = 'tmp_foo'; +SELECT current_user = 'regress_guc_user'; +-- discard everything +DISCARD ALL; +-- look again +SELECT pg_listening_channels(); +SELECT name FROM pg_prepared_statements; +SELECT name FROM pg_cursors; +SHOW vacuum_cost_delay; +SELECT relname from pg_class where relname = 'tmp_foo'; +SELECT current_user = 'regress_guc_user'; +DROP ROLE regress_guc_user; + +-- +-- search_path should react to changes in pg_namespace +-- + +set search_path = foo, public, not_there_initially; +select current_schemas(false); +create schema not_there_initially; +select current_schemas(false); +drop schema not_there_initially; +select current_schemas(false); +reset search_path; + +-- +-- Tests for function-local GUC settings +-- + +set work_mem = '3MB'; + +create function report_guc(text) returns text as +$$ select current_setting($1) $$ language sql +set work_mem = '1MB'; + +select report_guc('work_mem'), current_setting('work_mem'); + +alter function report_guc(text) set work_mem = '2MB'; + +select report_guc('work_mem'), current_setting('work_mem'); + +alter function report_guc(text) reset all; + +select report_guc('work_mem'), current_setting('work_mem'); + +-- SET LOCAL is restricted by a function SET option +create or replace function myfunc(int) returns text as $$ +begin + set local work_mem = '2MB'; + return current_setting('work_mem'); +end $$ +language plpgsql +set work_mem = '1MB'; + +select myfunc(0), current_setting('work_mem'); + +alter function myfunc(int) reset all; + +select myfunc(0), current_setting('work_mem'); + +set work_mem = '3MB'; + +-- but SET isn't +create or replace function myfunc(int) returns text as $$ +begin + set work_mem = '2MB'; + return current_setting('work_mem'); +end $$ +language plpgsql +set work_mem = '1MB'; + +select myfunc(0), current_setting('work_mem'); + +set work_mem = '3MB'; + +-- it should roll back on error, though +create or replace function myfunc(int) returns text as $$ +begin + set work_mem = '2MB'; + perform 1/$1; + return current_setting('work_mem'); +end $$ +language plpgsql +set work_mem = '1MB'; + +select myfunc(0); +select current_setting('work_mem'); +select myfunc(1), current_setting('work_mem'); + +-- check current_setting()'s behavior with invalid setting name + +select current_setting('nosuch.setting'); -- FAIL +select current_setting('nosuch.setting', false); -- FAIL +select current_setting('nosuch.setting', true) is null; + +-- after this, all three cases should yield 'nada' +set nosuch.setting = 'nada'; + +select current_setting('nosuch.setting'); +select current_setting('nosuch.setting', false); +select current_setting('nosuch.setting', true); + +-- Normally, CREATE FUNCTION should complain about invalid values in +-- function SET options; but not if check_function_bodies is off, +-- because that creates ordering hazards for pg_dump + +create function func_with_bad_set() returns int as $$ select 1 $$ +language sql +set default_text_search_config = no_such_config; + +set check_function_bodies = off; + +create function func_with_bad_set() returns int as $$ select 1 $$ +language sql +set default_text_search_config = no_such_config; + +select func_with_bad_set(); + +reset check_function_bodies; + +set default_with_oids to f; +-- Should not allow to set it to true. +set default_with_oids to t; + +-- Test GUC categories and flag patterns +SELECT pg_settings_get_flags(NULL); +SELECT pg_settings_get_flags('does_not_exist'); +CREATE TABLE tab_settings_flags AS SELECT name, category, + 'EXPLAIN' = ANY(flags) AS explain, + 'NO_RESET' = ANY(flags) AS no_reset, + 'NO_RESET_ALL' = ANY(flags) AS no_reset_all, + 'NOT_IN_SAMPLE' = ANY(flags) AS not_in_sample, + 'RUNTIME_COMPUTED' = ANY(flags) AS runtime_computed + FROM pg_show_all_settings() AS psas, + pg_settings_get_flags(psas.name) AS flags; + +-- Developer GUCs should be flagged with GUC_NOT_IN_SAMPLE: +SELECT name FROM tab_settings_flags + WHERE category = 'Developer Options' AND NOT not_in_sample + ORDER BY 1; +-- Most query-tuning GUCs are flagged as valid for EXPLAIN. +-- default_statistics_target is an exception. +SELECT name FROM tab_settings_flags + WHERE category ~ '^Query Tuning' AND NOT explain + ORDER BY 1; +-- Runtime-computed GUCs should be part of the preset category. +SELECT name FROM tab_settings_flags + WHERE NOT category = 'Preset Options' AND runtime_computed + ORDER BY 1; +-- Preset GUCs are flagged as NOT_IN_SAMPLE. +SELECT name FROM tab_settings_flags + WHERE category = 'Preset Options' AND NOT not_in_sample + ORDER BY 1; +-- NO_RESET implies NO_RESET_ALL. +SELECT name FROM tab_settings_flags + WHERE no_reset AND NOT no_reset_all + ORDER BY 1; +DROP TABLE tab_settings_flags; |