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PG-188: Added a new column to monitor the query state.

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This commit is contained in:
Ibrar Ahmed
2021-03-21 00:04:39 +05:00
parent 73fbc7f017
commit f8ed33a92a
15 changed files with 153 additions and 125 deletions
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22
pg_stat_monitor--1.0.sql
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@@ -34,7 +34,7 @@ CREATE FUNCTION pg_stat_monitor_internal(IN showtext boolean,
OUT planid text,
OUT query text,
OUT query_plan text,
OUT state int8,
OUT state_code int8,
OUT top_queryid text,
OUT application_name text,
@@ -51,7 +51,7 @@ CREATE FUNCTION pg_stat_monitor_internal(IN showtext boolean,
OUT max_time float8,
OUT mean_time float8,
OUT stddev_time float8,
OUT rows int8,
OUT rows_retrieved int8,
OUT plans_calls int8, -- 23
OUT plan_total_time float8,
@@ -83,15 +83,15 @@ RETURNS SETOF record
AS 'MODULE_PATHNAME', 'pg_stat_monitor'
LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
CREATE OR REPLACE FUNCTION get_state(state int8) RETURNS TEXT AS
CREATE OR REPLACE FUNCTION get_state(state_code int8) RETURNS TEXT AS
$$
SELECT
CASE
WHEN state = 0 THEN 'PARSED'
WHEN state = 1 THEN 'PLANNING'
WHEN state = 2 THEN 'EXECUTION FINISHED'
WHEN state = 3 THEN 'ERROR'
WHEN state = 4 THEN 'FINISHED'
WHEN state_code = 0 THEN 'PARSING'
WHEN state_code = 1 THEN 'PLANNING'
WHEN state_code = 2 THEN 'ACTIVE'
WHEN state_code = 3 THEN 'FINISHED'
WHEN state_code = 4 THEN 'FINISHED WITH ERROR'
END
$$
LANGUAGE SQL PARALLEL SAFE;
@@ -160,7 +160,7 @@ CREATE VIEW pg_stat_monitor AS SELECT
round( CAST(max_time as numeric), 4)::float8 as max_time,
round( CAST(mean_time as numeric), 4)::float8 as mean_time,
round( CAST(stddev_time as numeric), 4)::float8 as stddev_time,
rows,
rows_retrieved,
plans_calls,
round( CAST(plan_total_time as numeric), 4)::float8 as plan_total_time,
round( CAST(plan_min_time as numeric), 4)::float8 as plan_min_time,
@@ -185,8 +185,8 @@ CREATE VIEW pg_stat_monitor AS SELECT
wal_records,
wal_fpi,
wal_bytes,
state,
get_state(state) as state_value
state_code,
get_state(state_code) as state
FROM pg_stat_monitor_internal(TRUE) p, pg_database d WHERE dbid = oid
ORDER BY bucket_start_time;