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-- test old extension version entry points
CREATE EXTENSION pg_stat_statements WITH VERSION '1.4';
-- Execution of pg_stat_statements_reset() is granted only to
-- superusers in 1.4, so this fails.
SET SESSION AUTHORIZATION pg_read_all_stats;
SELECT pg_stat_statements_reset();
ERROR: permission denied for function pg_stat_statements_reset
RESET SESSION AUTHORIZATION;
AlTER EXTENSION pg_stat_statements UPDATE TO '1.5';
-- Execution of pg_stat_statements_reset() should be granted to
-- pg_read_all_stats now, so this works.
SET SESSION AUTHORIZATION pg_read_all_stats;
SELECT pg_stat_statements_reset();
pg_stat_statements_reset
--------------------------
(1 row)
RESET SESSION AUTHORIZATION;
-- In 1.6, it got restricted back to superusers.
AlTER EXTENSION pg_stat_statements UPDATE TO '1.6';
SET SESSION AUTHORIZATION pg_read_all_stats;
SELECT pg_stat_statements_reset();
ERROR: permission denied for function pg_stat_statements_reset
RESET SESSION AUTHORIZATION;
SELECT pg_get_functiondef('pg_stat_statements_reset'::regproc);
pg_get_functiondef
-------------------------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.pg_stat_statements_reset() +
RETURNS void +
LANGUAGE c +
PARALLEL SAFE +
AS '$libdir/pg_stat_statements', $function$pg_stat_statements_reset$function$+
(1 row)
-- New function for pg_stat_statements_reset introduced, still
-- restricted for non-superusers.
AlTER EXTENSION pg_stat_statements UPDATE TO '1.7';
SET SESSION AUTHORIZATION pg_read_all_stats;
SELECT pg_stat_statements_reset();
ERROR: permission denied for function pg_stat_statements_reset
RESET SESSION AUTHORIZATION;
SELECT pg_get_functiondef('pg_stat_statements_reset'::regproc);
pg_get_functiondef
--------------------------------------------------------------------------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.pg_stat_statements_reset(userid oid DEFAULT 0, dbid oid DEFAULT 0, queryid bigint DEFAULT 0)+
RETURNS void +
LANGUAGE c +
PARALLEL SAFE STRICT +
AS '$libdir/pg_stat_statements', $function$pg_stat_statements_reset_1_7$function$ +
(1 row)
\d pg_stat_statements
View "public.pg_stat_statements"
Column | Type | Collation | Nullable | Default
---------------------+------------------+-----------+----------+---------
userid | oid | | |
dbid | oid | | |
queryid | bigint | | |
query | text | | |
calls | bigint | | |
total_time | double precision | | |
min_time | double precision | | |
max_time | double precision | | |
mean_time | double precision | | |
stddev_time | double precision | | |
rows | bigint | | |
shared_blks_hit | bigint | | |
shared_blks_read | bigint | | |
shared_blks_dirtied | bigint | | |
shared_blks_written | bigint | | |
local_blks_hit | bigint | | |
local_blks_read | bigint | | |
local_blks_dirtied | bigint | | |
local_blks_written | bigint | | |
temp_blks_read | bigint | | |
temp_blks_written | bigint | | |
blk_read_time | double precision | | |
blk_write_time | double precision | | |
SELECT count(*) > 0 AS has_data FROM pg_stat_statements;
has_data
----------
t
(1 row)
-- New functions and views for pg_stat_statements in 1.8
AlTER EXTENSION pg_stat_statements UPDATE TO '1.8';
\d pg_stat_statements
View "public.pg_stat_statements"
Column | Type | Collation | Nullable | Default
---------------------+------------------+-----------+----------+---------
userid | oid | | |
dbid | oid | | |
queryid | bigint | | |
query | text | | |
plans | bigint | | |
total_plan_time | double precision | | |
min_plan_time | double precision | | |
max_plan_time | double precision | | |
mean_plan_time | double precision | | |
stddev_plan_time | double precision | | |
calls | bigint | | |
total_exec_time | double precision | | |
min_exec_time | double precision | | |
max_exec_time | double precision | | |
mean_exec_time | double precision | | |
stddev_exec_time | double precision | | |
rows | bigint | | |
shared_blks_hit | bigint | | |
shared_blks_read | bigint | | |
shared_blks_dirtied | bigint | | |
shared_blks_written | bigint | | |
local_blks_hit | bigint | | |
local_blks_read | bigint | | |
local_blks_dirtied | bigint | | |
local_blks_written | bigint | | |
temp_blks_read | bigint | | |
temp_blks_written | bigint | | |
blk_read_time | double precision | | |
blk_write_time | double precision | | |
wal_records | bigint | | |
wal_fpi | bigint | | |
wal_bytes | numeric | | |
SELECT pg_get_functiondef('pg_stat_statements_reset'::regproc);
pg_get_functiondef
--------------------------------------------------------------------------------------------------------------------------------
CREATE OR REPLACE FUNCTION public.pg_stat_statements_reset(userid oid DEFAULT 0, dbid oid DEFAULT 0, queryid bigint DEFAULT 0)+
RETURNS void +
LANGUAGE c +
PARALLEL SAFE STRICT +
AS '$libdir/pg_stat_statements', $function$pg_stat_statements_reset_1_7$function$ +
(1 row)
DROP EXTENSION pg_stat_statements;
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