在MySQL中找不到存储过程中的临时表

Question

I've inherited some code that uses stored procedures and one of them doesn't appear to be working correctly.

The stored procedure uses a temporary table to insert data later in the procedure. However when I execute the stored procedure, no data is inserted. When I debug it, I get the error:

Table 'db.testtable' doesn't exist

I've stripped down the stored procedure to the following code, and it doesn't work. I always get the error on the SELECT statement. Everything looks OK from what I can tell based on the examples I've seen.

DROP PROCEDURE IF EXISTS db.insert_record;
CREATE PROCEDURE db.`insert_record`(id int, status int)
BEGIN
    DECLARE code varchar(45);

    DROP TEMPORARY TABLE IF EXISTS testTable;

    CREATE TEMPORARY TABLE testTable AS (SELECT 'TEST' AS fakeColumn);

    SELECT fakeColumn INTO code FROM testTable;
END;

I've also verified that the user I am connected as has the permission to create temporary tables; in fact it has every permission available

Additional Details

Running MySQL 5.6 on Windows.

If I take the drop / create / select statements by themselves and run as a script, it behaves as expected.

Using Toad for MySQL to debug the stored procedure.

Answer 1

I can't reproduce the problem. What other information can you provide?

mysql> USE `test`;
Database changed

mysql> SELECT VERSION();
+-----------------+
| VERSION()       |
+-----------------+
| 5.5.22-0ubuntu1 |
+-----------------+
1 row in set (0.00 sec)

mysql> DELIMITER //

mysql> DROP PROCEDURE IF EXISTS `insert_record`//
Query OK, 0 rows affected (0.00 sec)

mysql> CREATE PROCEDURE `insert_record`(`id` int, `status` int)
    -> BEGIN
    ->   DECLARE `code` VARCHAR(45);
    ->   DROP TEMPORARY TABLE IF EXISTS `testTable`;
    ->   CREATE TEMPORARY TABLE `testTable` AS (SELECT 'TEST' AS `fakeColumn`);
    ->   SELECT `fakeColumn` INTO `code` FROM `testTable`;
    ->   SELECT `code`;
    -> END//
Query OK, 0 rows affected (0.01 sec)

mysql> CALL `insert_record`(NULL, NULL)//
+--------+
| `code` |
+--------+
| TEST   |
+--------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

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