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All functions provided by this extension are PARALLEL SAFE. Given the general prohibition against write operations in parallel queries, it is perhaps a bit surprising that pg_stat_statements_reset() is parallel safe. But since it only modifies shared memory, not the database, it's OK. Andreas Karlsson
49 lines
1.4 KiB
SQL
49 lines
1.4 KiB
SQL
/* contrib/pg_stat_statements/pg_stat_statements--1.4.sql */
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION pg_stat_statements" to load this file. \quit
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-- Register functions.
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CREATE FUNCTION pg_stat_statements_reset()
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RETURNS void
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AS 'MODULE_PATHNAME'
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LANGUAGE C PARALLEL SAFE;
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CREATE FUNCTION pg_stat_statements(IN showtext boolean,
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OUT userid oid,
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OUT dbid oid,
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OUT queryid bigint,
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OUT query text,
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OUT calls int8,
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OUT total_time float8,
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OUT min_time float8,
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OUT max_time float8,
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OUT mean_time float8,
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OUT stddev_time float8,
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OUT rows int8,
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OUT shared_blks_hit int8,
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OUT shared_blks_read int8,
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OUT shared_blks_dirtied int8,
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OUT shared_blks_written int8,
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OUT local_blks_hit int8,
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OUT local_blks_read int8,
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OUT local_blks_dirtied int8,
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OUT local_blks_written int8,
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OUT temp_blks_read int8,
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OUT temp_blks_written int8,
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OUT blk_read_time float8,
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OUT blk_write_time float8
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)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'pg_stat_statements_1_3'
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LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
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-- Register a view on the function for ease of use.
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CREATE VIEW pg_stat_statements AS
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SELECT * FROM pg_stat_statements(true);
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GRANT SELECT ON pg_stat_statements TO PUBLIC;
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-- Don't want this to be available to non-superusers.
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REVOKE ALL ON FUNCTION pg_stat_statements_reset() FROM PUBLIC;
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