Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.0(EOL), 10.1(EOL), 10.2(EOL), 10.3(EOL)
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None
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10.2.11
Description
Using this simple setup ...
SET SQL_MODE='ORACLE';
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CREATE TABLE t1(
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id int primary key,
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val int
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);
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... the following query works fine when used standalone ...
SELECT * FROM (
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SELECT id, SUM(val) as sum_val FROM t1) a
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WHERE NOT EXISTS (SELECT * FROM ( SELECT id FROM t1) b
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WHERE a.id = b.id
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)
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;
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... but not when used in a procedure / FOR loop context ...
delimiter //
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CREATE PROCEDURE p1
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AS
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BEGIN
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FOR rec in (
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SELECT * FROM (
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SELECT id, SUM(val) as sum_val FROM t1) a
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WHERE NOT EXISTS (SELECT * FROM ( SELECT id FROM t1) b
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WHERE a.id = b.id
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)
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)
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LOOP
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SELECT 1;
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END LOOP;
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END;
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//
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DELIMITER ;
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... resulting in ...
mysql> CALL p1();
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ERROR 1054 (42S22): Unknown column 'a.id' in 'where clause'
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Removing just the SUM() aggregate part makes the query/procedure work:
delimiter //
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CREATE PROCEDURE p2
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AS
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BEGIN
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FOR rec in (
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SELECT * FROM (
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SELECT id FROM t1) a
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WHERE NOT EXISTS (SELECT * FROM ( SELECT id FROM t1) b
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WHERE a.id = b.id
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)
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)
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LOOP
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SELECT 2;
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END LOOP;
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END;
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//
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DELIMITER ;
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mysql> CALL p2();
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Query OK, 0 rows affected (0,00 sec)
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