使用准备好的语句的结果作为查询中的临时表

Question

If I have the output of a prepared statement; how do I use it as the source of my query?

CALL `myProcedure`;

PREPARE stmnt FROM @allSQL;

EXECUTE stmnt;

DEALLOCATE PREPARE stmnt;

So, I get an output from the EXECUTE stmnt; (let's call it tmp ) and I would like to run a query along the lines of:

SELECT * FROM (EXECUTE stmnt) AS tmp WHERE this = that;

Answer 1

You could prepare a CREATE TEMPORARY TABLE statement that contains the result of the query:

SET @createSQL = CONCAT('CREATE TEMPORARY TABLE tmp AS ', @allSQL);
PREPARE stmt FROM @createSQL;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

SELECT * FROM tmp WHERE this = that;