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MySQL sp_split() splits a comma delimited string into a recordset & inserts it into target table or returns it
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-- ---------------------------- | |
-- Procedure structure for `sp_split` | |
-- ---------------------------- | |
DROP PROCEDURE IF EXISTS `sp_split`; | |
delimiter ;; | |
CREATE DEFINER=`root`@`localhost` PROCEDURE `sp_split`(IN toSplit text, IN target char(255)) | |
BEGIN | |
# Temp table variables | |
SET @tableName = 'tmpSplit'; | |
SET @fieldName = 'variable'; | |
# Dropping table | |
SET @sql := CONCAT('DROP TABLE IF EXISTS ', @tableName); | |
PREPARE stmt FROM @sql; | |
EXECUTE stmt; | |
DEALLOCATE PREPARE stmt; | |
# Creating table | |
SET @sql := CONCAT('CREATE TEMPORARY TABLE ', @tableName, ' (', @fieldName, ' VARCHAR(1000))'); | |
PREPARE stmt FROM @sql; | |
EXECUTE stmt; | |
DEALLOCATE PREPARE stmt; | |
# Preparing toSplit | |
SET @vars := toSplit; | |
SET @vars := CONCAT("('", REPLACE(@vars, ",", "'),('"), "')"); | |
# Inserting values | |
SET @sql := CONCAT('INSERT INTO ', @tableName, ' VALUES ', @vars); | |
PREPARE stmt FROM @sql; | |
EXECUTE stmt; | |
DEALLOCATE PREPARE stmt; | |
# Returning record set, or inserting into optional target | |
IF target IS NULL THEN | |
SET @sql := CONCAT('SELECT TRIM(`', @fieldName, '`) AS `', @fieldName, '` FROM ', @tableName); | |
ELSE | |
SET @sql := CONCAT('INSERT INTO ', target, ' SELECT TRIM(`', @fieldName, '`) FROM ', @tableName); | |
END IF; | |
PREPARE stmt FROM @sql; | |
EXECUTE stmt; | |
DEALLOCATE PREPARE stmt; | |
END | |
;; | |
delimiter ; |
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