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Developer-C 11.1
3.0
4.0
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5.5
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10
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3.39
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2.11
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CREATe PROCEDURE abc(IN _biPK varchar(10),_vcTag varchar(10)) BEGIN #Procedure: insertMetaTagIfNotPresent #Parameters: bkID ID to find or NULL to create automatically # vcTag Tag name to assign, must be unique #Notes: Creates metatag table if it doesn't exist #History: 2021/05/04 Written by Simon Platten DECLARE txtSQL TEXT; #Create SQL insert string SET txtSQL := 'INSERT INTO metatags ('; #Has a primary key value been supplied? IF NOT _biPK IS NULL THEN #Yes, use it! SET txtSQL := CONCAT(txtSQL, '`biPK`,'); END IF; SET txtSQL := CONCAT(txtSQL, '`vcTag`) VALUES ('); IF NOT _biPK IS NULL THEN SET txtSQL := CONCAT(txtSQL,"'", _biPK, "',"); END IF; SET txtSQL := CONCAT(txtSQL, "'", _vcTag, "');"); SELECT txtSQL; #Create prepared statment #SET @SQL := txtSQL; #PREPARE stmt FROM @SQL; #DEALLOCATE PREPARE stmt; #SELECT txtSQL; END
CALL abc('a','b')
txtSQL
INSERT INTO metatags (`biPK`,`vcTag`) VALUES ('a','b');