Migration script in MySQL - php

Question

I want to do a Migration data from one table to another.
I wrote a simple PHP script for my purposes but I wanted to do this by MySql script using user defined variables:
the PHP script looks like this:
//MIGRATION
$sql = "SELECT position FROM ts_user_config WHERE position != '' AND position NOT REGEXP '^-?[0-9]+$' GROUP BY TRIM(position) ORDER BY position";
$positions = db_loadColumn( $sql );
foreach ($positions as $key => $pos) {
$sql = "SELECT id FROM user_positions where UPPER(position) = UPPER('$pos')";
$posId = db_loadResult($sql);
if ($posId == null) {
$sql = "INSERT INTO user_positions (position, `desc`) VALUES ('$pos', '$pos')";
db_exec($sql);
$posId = db_insert_id();
}
$sql = "UPDATE ts_user_config SET position='$posId' WHERE TRIM(position)='$pos'";
db_exec($sql);
}
//---------
Could somebody be so kind and rewrite this PHP instructions to MySQL script? I tried to do this but my mySQL knowledge is very low and I couldn't done that.
Please help me if its not too much effort.
Thank you in advance.

Answer 1

I Have DONE IT !!!!!! :)
this is my mySQL script, I dont know if its perfect but its do what I need. Please tell me if I can make something better here. Thanks again :)
drop procedure if exists PositionMigration;
delimiter '//'
CREATE PROCEDURE PositionMigration()
BEGIN
BLOCK1: BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE pos VARCHAR(100);
DECLARE posId1 INT;
DECLARE posId2 INT;
DECLARE sql1 CURSOR FOR SELECT position FROM ts_user_config WHERE position != '' AND position NOT REGEXP '^-?[0-9]+$' GROUP BY TRIM(position) ORDER BY position;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
OPEN sql1;
read_loop: LOOP
FETCH sql1 INTO pos;
IF done THEN
LEAVE read_loop;
END IF;
BLOCK2: BEGIN
DECLARE posNotFound INT DEFAULT FALSE;
DECLARE sql2 CURSOR FOR SELECT id FROM user_positions where UPPER(position) = UPPER(pos);
DECLARE CONTINUE HANDLER FOR NOT FOUND SET posNotFound = TRUE;
OPEN sql2;
FETCH sql2 INTO posId1;
IF posNotFound THEN
INSERT INTO user_positions (position, \`desc\`) VALUES (pos, pos);
BLOCK3: BEGIN
DECLARE sql3 CURSOR FOR SELECT LAST_INSERT_ID();
OPEN sql3;
FETCH sql3 INTO posId2;
UPDATE ts_user_config SET position=posId2 WHERE TRIM(position)=pos;
CLOSE sql3;
END BLOCK3;
ELSE
UPDATE ts_user_config SET position=posId1 WHERE TRIM(position)=pos;
END IF;
CLOSE sql2;
END BLOCK2;
END LOOP;
CLOSE sql1;
END BLOCK1;
END;
//
delimiter ';'
call PositionMigration();