within an MySQL stored procedure how can I dynamically set the variable name?

i want to iterate through the records in a table and place the values into variables within a stored procedure.

  DECLARE movetonext_tcl1 INT;
  DECLARE movetonext_tcl2 INT;
  DECLARE movetonext_tcl3 INT;
  DECLARE movetonext_tcl4 INT;
  DECLARE calculate_tcl1 INT;
  DECLARE calculate_tcl2 INT;
  DECLARE calculate_tcl3 INT;
  DECLARE calculate_tcl4 INT;
  declare x int;
  SET x = 1;
      WHILE x  <= 4 DO
             select movenextvalue FROM `tcl rules` where id=x into movetonext_tcl1;
             select calculatevalue FROM `tcl rules` where id=x into calculate_tcl1;
      SET  x = x + 1;
      END WHILE;

I need to know if it is possible to dynamically change the movetonext_tcl1 to tcl2,3 and 4 as I look through the statement.
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Kevin CrossChief Technology OfficerCommented:
Just re-read the question and see you are trying to change the variable name you are passing to.
May be able to do this with dynamic code, but will post back with some thoughts on a different way.
Kevin CrossChief Technology OfficerCommented:
Does something like this work for you?

SELECT MAX(CASE id WHEN 1 THEN movenextvalue END)
     , MAX(CASE id WHEN 1 THEN calculatevalue END)
     , MAX(CASE id WHEN 2 THEN movenextvalue END)
     , MAX(CASE id WHEN 2 THEN calculatevalue END)
     , MAX(CASE id WHEN 3 THEN movenextvalue END)
     , MAX(CASE id WHEN 3 THEN calculatevalue END)
     , MAX(CASE id WHEN 4 THEN movenextvalue END)
     , MAX(CASE id WHEN 4 THEN calculatevalue END)
FROM `tcl rules` 
WHERE id <= 4
INTO movetonext_tcl1, calculate_tcl1
   , movetonext_tcl2, calculate_tcl2
   , movetonext_tcl3, calculate_tcl3
   , movetonext_tcl4, calculate_tcl4

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It would let you set all 8 variables without a loop.
If not as the real-life scenario is more complex, you can read more on dynamic (prepared statements) approach here: http://dev.mysql.com/doc/refman/5.7/en/sql-syntax-prepared-statements.html

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NemetonaAuthor Commented:
Thank you, that works for me.
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MySQL Server

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