[MDEV-8635] Redundant warnings on WHERE decimal_column='ax' Created: 2015-08-17  Updated: 2015-09-25  Resolved: 2015-09-25

Status: Closed
Project: MariaDB Server
Component/s: Optimizer
Affects Version/s: 5.5, 10.0, 10.1
Fix Version/s: 10.1.8

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Alexander Barkov
Resolution: Fixed Votes: 0
Labels: None


 Description   

This script

DROP TABLE IF EXISTS t1;
 
CREATE TABLE t1 (a DECIMAL, KEY(a)) ENGINE=MyISAM;
 
INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
 
EXPLAIN SELECT * FROM t1 WHERE a='ax' ORDER BY a;
 
SHOW WARNINGS;

returns

+---------+------+-------------------------------------------------------+
 
| Level   | Code | Message                                               |
 
+---------+------+-------------------------------------------------------+
 
| Warning | 1366 | Incorrect decimal value: 'ax' for column 'a' at row 1 |
 
| Warning | 1366 | Incorrect decimal value: 'ax' for column 'a' at row 1 |
 
+---------+------+-------------------------------------------------------+


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