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6ab1dbd26b
This is preliminary patch. It adds NOT NULL checking for the result of pg_stat_statements_reset() function. It is needed for upcoming patch "Track statement entry timestamp" that will change the result type of this function to the timestamp of a reset performed. Discussion: https://postgr.es/m/flat/72e80e7b160a6eb189df9ef6f068cce3765d37f8.camel%40moonset.ru Author: Andrei Zubkov Reviewed-by: Julien Rouhaud, Hayato Kuroda, Yuki Seino, Chengxi Sun Reviewed-by: Anton Melnikov, Darren Rush, Michael Paquier, Sergei Kornilov Reviewed-by: Alena Rybakina, Andrei Lepikhov
32 lines
915 B
SQL
32 lines
915 B
SQL
--
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-- Information related to planning
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--
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-- These tests require track_planning to be enabled.
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SET pg_stat_statements.track_planning = TRUE;
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SELECT pg_stat_statements_reset() IS NOT NULL AS t;
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--
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-- [re]plan counting
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--
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CREATE TABLE stats_plan_test ();
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PREPARE prep1 AS SELECT COUNT(*) FROM stats_plan_test;
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EXECUTE prep1;
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EXECUTE prep1;
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EXECUTE prep1;
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ALTER TABLE stats_plan_test ADD COLUMN x int;
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EXECUTE prep1;
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SELECT 42;
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SELECT 42;
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SELECT 42;
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SELECT plans, calls, rows, query FROM pg_stat_statements
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WHERE query NOT LIKE 'PREPARE%' ORDER BY query COLLATE "C";
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-- for the prepared statement we expect at least one replan, but cache
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-- invalidations could force more
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SELECT plans >= 2 AND plans <= calls AS plans_ok, calls, rows, query FROM pg_stat_statements
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WHERE query LIKE 'PREPARE%' ORDER BY query COLLATE "C";
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-- Cleanup
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DROP TABLE stats_plan_test;
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SELECT pg_stat_statements_reset() IS NOT NULL AS t;
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