Details
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Task
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.3.1-1
Description
PR:396 implements stored routine error stack trace.
Example
This script creates two procedures. p2 calls p1, and p1 opens a cursor using a non-existing table:
DELIMITER $$
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CREATE OR REPLACE PROCEDURE p1() |
BEGIN
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DECLARE c CURSOR FOR SELECT * FROM not_existing; |
OPEN c; |
CLOSE c; |
END; |
$$
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CREATE OR REPLACE PROCEDURE p2() |
BEGIN
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CALL p1;
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END; |
$$
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DELIMITER ;
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CALL p2;
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ERROR 1146 (42S02): Table 'test.not_existing' doesn't exist
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The script returns an error, as expected.
Now it's possible to get additional diagnostics:
SHOW WARNINGS;
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+-------+------+-----------------------------------------+
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| Level | Code | Message |
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+-------+------+-----------------------------------------+
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| Error | 1146 | Table 'test.not_existing' doesn't exist |
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| Note | 4070 | At line 4 in test.p1 |
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| Note | 4070 | At line 3 in test.p2 |
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+-------+------+-----------------------------------------+
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It displays stack trace, showing where the error actually happened:
- Line 4 in test.p1 is the OPEN command which actually raised the error
- Line 3 in test.p2 is the CALL statement, calling p1 from p2.
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