From: Date: June 21 2006 1:05pm
Subject: Split a Delimited String in SQL ( PROCEDURE split_string )
List-Archive: http://lists.mysql.com/mysql/199128
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Hi all,
I was trying this:
http://forge.mysql.com/snippets/view.php?id=4

That is supposed to emulate a  split()   in mysql.

Could anyone make it work ?

I've been trying without luck.  I 'm getting strange errors when trying to
create this procedure.

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DROP PROCEDURE IF EXISTS split_string
  CREATE PROCEDURE split_string (
     IN input TEXT,
     IN delimiter VARCHAR(10)
  )
      SQL SECURITY INVOKER
      BEGIN
      DECLARE cur_position INT DEFAULT 1 ;
      DECLARE remainder TEXT;
      DECLARE cur_string VARCHAR(1000);
      DECLARE delimiter_length TINYINT UNSIGNED;
      DROP TEMPORARY TABLE IF EXISTS SplitValues;
      CREATE TEMPORARY TABLE SplitValues (
        value VARCHAR(1000) NOT NULL PRIMARY KEY
        ) ENGINE=MEMORY;
      SET remainder = input;
      SET delimiter_length = CHAR_LENGTH(delimiter);

       WHILE CHAR_LENGTH(remainder) > 0 AND cur_position > 0 DO
        SET cur_position = INSTR(remainder, delimiter);

      IF cur_position = 0 THEN
        SET cur_string = remainder;
     ELSE
        SET cur_string = LEFT(remainder, cur_position - 1);
        END IF;

      IF TRIM(cur_string) != '' THEN
        INSERT INTO SplitValues VALUES (cur_string);
     END IF;

      SET remainder = SUBSTRING(remainder, cur_position + delimiter_length);

      END WHILE;
      END

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Best regards,
MARTIN

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