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How to validate a Date in DB2
source link: https://marco.dev/2016/04/20/how-to-validate-a-date-in-db2/
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How to validate a Date in DB2
This function verify if a date is valid in DB2 according to a custom date format.
-- this function return 1 if the varchar date and 0 if the date is not valid -- the format of the date is passed in the second parameter (ex. mm/dd/yyyy) CREATE OR REPLACE FUNCTION DB.FUNC_IS_VALID_DATE(dateToValidate VARCHAR(20), dateFormat VARCHAR(20)) RETURNS INTEGER BEGIN DECLARE functionResult INT; DECLARE resultingDate DATE; DECLARE SQLCODE INTEGER; DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN RETURN 0; -- the data is not valid END; -- END DECLARE SELECT to_date(dateToValidate, dateFormat) INTO resultingDate FROM SYSIBM.SYSDUMMY1; RETURN 1; -- the data is valid END;
Author
Marco Molteni
Marco Molteni Blog
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