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query_histogram--1.1.sql
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query_histogram--1.1.sql
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CREATE OR REPLACE FUNCTION query_histogram( IN scale BOOLEAN DEFAULT TRUE, OUT bin_from INT, OUT bin_to INT, OUT bin_count BIGINT, OUT bin_count_pct REAL,
OUT bin_time DOUBLE PRECISION, OUT bin_time_pct REAL)
RETURNS SETOF record
AS 'MODULE_PATHNAME', 'query_histogram'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION xact_histogram( IN scale BOOLEAN DEFAULT TRUE, OUT bin_from INT, OUT bin_to INT, OUT bin_count BIGINT, OUT bin_count_pct REAL,
OUT bin_time DOUBLE PRECISION, OUT bin_time_pct REAL)
RETURNS SETOF record
AS 'MODULE_PATHNAME', 'xact_histogram'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION query_histogram_reset()
RETURNS void
AS 'MODULE_PATHNAME', 'query_histogram_reset'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION query_histogram_get_reset()
RETURNS timestamp
AS 'MODULE_PATHNAME', 'query_histogram_get_reset'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE VIEW query_histogram AS
SELECT
histogram.*,
round(1000000 * bin_time / (CASE WHEN bin_count > 0 THEN bin_count ELSE 1 END)) / 1000 AS bin_time_avg
FROM query_histogram(true) histogram;
CREATE OR REPLACE VIEW xact_histogram AS
SELECT
histogram.*,
round(1000000 * bin_time / (CASE WHEN bin_count > 0 THEN bin_count ELSE 1 END)) / 1000 AS bin_time_avg
FROM xact_histogram(true) histogram;