36 lines
1.0 KiB
PL/PgSQL
36 lines
1.0 KiB
PL/PgSQL
-- BF [ 1824260 ] TRUNC function not working like in Oracle
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-- http://sourceforge.net/tracker/?func=detail&atid=879332&aid=1824260&group_id=176962
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--
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CREATE OR REPLACE FUNCTION trunc(datetime TIMESTAMP WITH TIME ZONE)
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RETURNS DATE AS $$
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BEGIN
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RETURN CAST(datetime AS DATE);
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION trunc(datetime TIMESTAMP WITH TIME ZONE, format varchar)
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RETURNS DATE AS $$
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BEGIN
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IF format = 'Q' THEN
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RETURN CAST(DATE_Trunc('quarter',datetime) as DATE);
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ELSIF format = 'Y' or format = 'YEAR' THEN
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RETURN CAST(DATE_Trunc('year',datetime) as DATE);
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ELSIF format = 'MM' or format = 'MONTH' THEN
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RETURN CAST(DATE_Trunc('month',datetime) as DATE);
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ELSIF format = 'DD' THEN
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RETURN CAST(DATE_Trunc('day',datetime) as DATE);
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ELSIF format = 'DY' THEN
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RETURN CAST(DATE_Trunc('day',datetime) as DATE);
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ELSE
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RETURN CAST(datetime AS DATE);
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END IF;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION trunc(i INTERVAL)
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RETURNS INTEGER AS $$
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BEGIN
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RETURN EXTRACT(DAY FROM i);
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END;
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$$ LANGUAGE plpgsql;
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