timescaledb/sql/histogram.sql

-- Copyright (c) 2016-2018  Timescale, Inc. All Rights Reserved.
--
-- This file is licensed under the Apache License, see LICENSE-APACHE
-- at the top level directory of the TimescaleDB distribution.

CREATE OR REPLACE FUNCTION _timescaledb_internal.hist_sfunc (state INTERNAL, val DOUBLE PRECISION, MIN DOUBLE PRECISION, MAX DOUBLE PRECISION, nbuckets INTEGER)
RETURNS INTERNAL
AS '@MODULE_PATHNAME@', 'ts_hist_sfunc'
LANGUAGE C IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION _timescaledb_internal.hist_combinefunc(state1 INTERNAL, state2 INTERNAL)
RETURNS INTERNAL
AS '@MODULE_PATHNAME@', 'ts_hist_combinefunc'
LANGUAGE C IMMUTABLE PARALLEL SAFE;

CREATE OR REPLACE FUNCTION _timescaledb_internal.hist_serializefunc(INTERNAL)
RETURNS bytea
AS '@MODULE_PATHNAME@', 'ts_hist_serializefunc'
LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;

CREATE OR REPLACE FUNCTION _timescaledb_internal.hist_deserializefunc(bytea, INTERNAL)
RETURNS INTERNAL
AS '@MODULE_PATHNAME@', 'ts_hist_deserializefunc'
LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;

CREATE OR REPLACE FUNCTION _timescaledb_internal.hist_finalfunc(state INTERNAL, val DOUBLE PRECISION, MIN DOUBLE PRECISION, MAX DOUBLE PRECISION, nbuckets INTEGER)
RETURNS INTEGER[]
AS '@MODULE_PATHNAME@', 'ts_hist_finalfunc'
LANGUAGE C IMMUTABLE PARALLEL SAFE;