pg_interval_to_start.sql (1187B)
1 -- 2 -- This file is part of TALER 3 -- Copyright (C) 2025 Taler Systems SA 4 -- 5 -- TALER is free software; you can redistribute it and/or modify it under the 6 -- terms of the GNU General Public License as published by the Free Software 7 -- Foundation; either version 3, or (at your option) any later version. 8 -- 9 -- TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 -- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 -- A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 -- 13 -- You should have received a copy of the GNU General Public License along with 14 -- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 -- 16 DROP FUNCTION IF EXISTS merchant.interval_to_start; 17 CREATE OR REPLACE FUNCTION merchant.interval_to_start ( 18 IN in_timestamp TIMESTAMP, 19 IN in_range merchant.statistic_range, 20 OUT out_bucket_start INT8 21 ) 22 LANGUAGE plpgsql 23 AS $$ 24 BEGIN 25 out_bucket_start = EXTRACT(EPOCH FROM DATE_TRUNC(in_range::text, in_timestamp)); 26 END $$; 27 28 COMMENT ON FUNCTION merchant.interval_to_start 29 IS 'computes the start time of the bucket for an event at the current time given the desired bucket range';