Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.0, 10.1
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10.1.8-4
Description
I run "mysql --column-type-info test" and execute this SQL script:
SET timestamp=UNIX_TIMESTAMP('2015-01-01 00:00:00');
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a TIME);
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INSERT INTO t1 VALUES ('00:00:00'),('00:01:00');
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SELECT MAX(CAST(a AS DATETIME)) FROM t1;
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It returns the following metadata:
Field 1: `MAX(CAST(a AS DATETIME))`
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...
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Type: VAR_STRING
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Collation: utf8_general_ci (33)
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Length: 57
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Max_length: 19
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Decimals: 0
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Flags:
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This is wrong. The expected Type is DATETIME.
Note, if I now run:
DROP TABLE IF EXISTS t2;
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CREATE TABLE t2 AS SELECT MAX(CAST(a AS DATETIME)) FROM t1;
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SHOW CREATE TABLE t2;
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it correctly creates a DATETIME column:
+-------+---------------------------------------------------------------------------------------------------------------+
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| Table | Create Table |
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+-------+---------------------------------------------------------------------------------------------------------------+
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| t2 | CREATE TABLE `t2` (
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`MAX(CAST(a AS DATETIME))` datetime DEFAULT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
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+-------+---------------------------------------------------------------------------------------------------------------+
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So the problem is only with the metadata returned.