Details
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Bug
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Status: Open (View Workflow)
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Minor
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Resolution: Unresolved
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5.1.67, 5.2.14, 5.3.12, 10.3.4, 5.5(EOL), 10.0(EOL), 10.1(EOL), 10.4(EOL), 10.5(EOL)
Description
When a string value is insterted into an INT, DOUBLE or DECIMAL column, it send different warnings in case of EDOM errors (when they could not find any digits) and truncation errors:
DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a INT);
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INSERT INTO t1 VALUES (''),('123x');
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SHOW WARNINGS;
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+---------+------+-----------------------------------------------------+
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| Level | Code | Message |
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+---------+------+-----------------------------------------------------+
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| Warning | 1366 | Incorrect integer value: '' for column 'a' at row 1 |
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| Warning | 1265 | Data truncated for column 'a' at row 2 |
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+---------+------+-----------------------------------------------------+
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If I force implicit string-to-number conversion the other way around:
DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a VARCHAR(10));
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INSERT INTO t1 VALUES (''),('123x');
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SELECT a+1 FROM t1;
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SHOW WARNINGS;
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it does not distinguish between EDOM and truncation:
+---------+------+------------------------------------------+
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| Level | Code | Message |
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+---------+------+------------------------------------------+
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| Warning | 1292 | Truncated incorrect DOUBLE value: '' |
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| Warning | 1292 | Truncated incorrect DOUBLE value: '123x' |
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+---------+------+------------------------------------------+
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Functions and literals also do not distinguish between EDOM and truncation:
SELECT ''+1,'123x'+1;
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SHOW WARNINGS;
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+---------+------+------------------------------------------+
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| Level | Code | Message |
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+---------+------+------------------------------------------+
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| Warning | 1292 | Truncated incorrect DOUBLE value: '' |
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| Warning | 1292 | Truncated incorrect DOUBLE value: '123x' |
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+---------+------+------------------------------------------+
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In case of EDOM the warning tells about truncation, which is not true.