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MDEV-5694 GREATEST(date, time) returns a wrong data type

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Alexander Barkov 2015-10-01 20:01:35 +04:00
parent a84fae27d9
commit accf9b5675
6 changed files with 837 additions and 38 deletions
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742
mysql-test/r/func_hybrid_type.result
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@ -2096,6 +2096,718 @@ t2 CREATE TABLE `t2` (
DROP TABLE t2;
DROP TABLE t1;
#
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATE, b TIME);
INSERT INTO t1 VALUES ('2010-01-01','10:20:30');
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 a ___________a 10 10 10 Y 128 0 63
def case_______a 10 10 10 Y 128 0 63
def case_____a_a 10 10 10 Y 128 0 63
def coalesce___a 10 10 10 Y 128 0 63
def coalesce_a_a 10 10 10 Y 128 0 63
def if_______a_a 10 10 10 Y 128 0 63
def ifnull___a_a 10 10 10 Y 128 0 63
def least____a_a 10 10 10 Y 128 0 63
def greatest_a_a 10 10 10 Y 128 0 63
def test t1 t1 b ___________b 11 10 8 Y 128 0 63
def case_______b 11 10 8 Y 128 0 63
def case_____b_b 11 10 8 Y 128 0 63
def coalesce___b 11 10 8 Y 128 0 63
def coalesce_b_b 11 10 8 Y 128 0 63
def if_______b_b 11 10 8 Y 128 0 63
def ifnull___b_b 11 10 8 Y 128 0 63
def least____b_b 11 10 8 Y 128 0 63
def greatest_b_b 11 10 8 Y 128 0 63
___________a 2010-01-01
case_______a 2010-01-01
case_____a_a 2010-01-01
coalesce___a 2010-01-01
coalesce_a_a 2010-01-01
if_______a_a 2010-01-01
ifnull___a_a 2010-01-01
least____a_a 2010-01-01
greatest_a_a 2010-01-01
___________b 10:20:30
case_______b 10:20:30
case_____b_b 10:20:30
coalesce___b 10:20:30
coalesce_b_b 10:20:30
if_______b_b 10:20:30
ifnull___b_b 10:20:30
least____b_b 10:20:30
greatest_b_b 10:20:30
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def case_____a_b 12 19 19 Y 128 0 63
def case_____b_a 12 19 19 Y 128 0 63
def coalesce_a_b 12 19 19 Y 128 0 63
def coalesce_b_a 12 19 19 Y 128 0 63
def if_______a_b 12 10 19 Y 128 0 63
def if_______b_a 12 10 19 Y 128 0 63
def ifnull___a_b 12 10 19 Y 128 0 63
def ifnull___b_a 12 10 19 Y 128 0 63
def least____a_b 12 10 19 Y 128 0 63
def least____b_a 12 10 19 Y 128 0 63
def greatest_a_b 12 10 19 Y 128 0 63
def greatest_b_a 12 10 19 Y 128 0 63
case_____a_b 2010-01-01 00:00:00
case_____b_a 2001-01-01 10:20:30
coalesce_a_b 2010-01-01 00:00:00
coalesce_b_a 2001-01-01 10:20:30
if_______a_b 2001-01-01 10:20:30
if_______b_a 2010-01-01 00:00:00
ifnull___a_b 2010-01-01 00:00:00
ifnull___b_a 2001-01-01 10:20:30
least____a_b 2001-01-01 10:20:30
least____b_a 2001-01-01 10:20:30
greatest_a_b 2010-01-01 00:00:00
greatest_b_a 2010-01-01 00:00:00
CREATE TABLE t2 AS
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`___________a` date DEFAULT NULL,
`case_______a` date DEFAULT NULL,
`case_____a_a` date DEFAULT NULL,
`coalesce___a` date DEFAULT NULL,
`coalesce_a_a` date DEFAULT NULL,
`if_______a_a` date DEFAULT NULL,
`ifnull___a_a` date DEFAULT NULL,
`least____a_a` date DEFAULT NULL,
`greatest_a_a` date DEFAULT NULL,
`___________b` time DEFAULT NULL,
`case_______b` time DEFAULT NULL,
`case_____b_b` time DEFAULT NULL,
`coalesce___b` time DEFAULT NULL,
`coalesce_b_b` time DEFAULT NULL,
`if_______b_b` time DEFAULT NULL,
`ifnull___b_b` time DEFAULT NULL,
`least____b_b` time DEFAULT NULL,
`greatest_b_b` time DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
CREATE TABLE t2 AS
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`case_____a_b` datetime DEFAULT NULL,
`case_____b_a` datetime DEFAULT NULL,
`coalesce_a_b` datetime DEFAULT NULL,
`coalesce_b_a` datetime DEFAULT NULL,
`if_______a_b` datetime DEFAULT NULL,
`if_______b_a` datetime DEFAULT NULL,
`ifnull___a_b` datetime DEFAULT NULL,
`ifnull___b_a` datetime DEFAULT NULL,
`least____a_b` datetime DEFAULT NULL,
`least____b_a` datetime DEFAULT NULL,
`greatest_a_b` datetime DEFAULT NULL,
`greatest_b_a` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
#
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a TIMESTAMP, b TIME);
INSERT INTO t1 VALUES ('2010-01-01 00:00:00','10:20:30');
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 a ___________a 7 19 19 N 9377 0 63
def case_______a 7 19 19 Y 128 0 63
def case_____a_a 7 19 19 N 129 0 63
def coalesce___a 7 19 19 N 129 0 63
def coalesce_a_a 7 19 19 N 129 0 63
def if_______a_a 7 19 19 N 129 0 63
def ifnull___a_a 7 19 19 N 129 0 63
def least____a_a 7 19 19 N 161 0 63
def greatest_a_a 7 19 19 N 161 0 63
def test t1 t1 b ___________b 11 10 8 Y 128 0 63
def case_______b 11 10 8 Y 128 0 63
def case_____b_b 11 10 8 Y 128 0 63
def coalesce___b 11 10 8 Y 128 0 63
def coalesce_b_b 11 10 8 Y 128 0 63
def if_______b_b 11 10 8 Y 128 0 63
def ifnull___b_b 11 10 8 Y 128 0 63
def least____b_b 11 10 8 Y 128 0 63
def greatest_b_b 11 10 8 Y 128 0 63
___________a 2010-01-01 00:00:00
case_______a 2010-01-01 00:00:00
case_____a_a 2010-01-01 00:00:00
coalesce___a 2010-01-01 00:00:00
coalesce_a_a 2010-01-01 00:00:00
if_______a_a 2010-01-01 00:00:00
ifnull___a_a 2010-01-01 00:00:00
least____a_a 2010-01-01 00:00:00
greatest_a_a 2010-01-01 00:00:00
___________b 10:20:30
case_______b 10:20:30
case_____b_b 10:20:30
coalesce___b 10:20:30
coalesce_b_b 10:20:30
if_______b_b 10:20:30
ifnull___b_b 10:20:30
least____b_b 10:20:30
greatest_b_b 10:20:30
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def case_____a_b 12 19 19 Y 128 0 63
def case_____b_a 12 19 19 Y 128 0 63
def coalesce_a_b 12 19 19 Y 128 0 63
def coalesce_b_a 12 19 19 Y 128 0 63
def if_______a_b 12 19 19 Y 128 0 63
def if_______b_a 12 19 19 Y 128 0 63
def ifnull___a_b 12 19 19 Y 128 0 63
def ifnull___b_a 12 19 19 N 129 0 63
def least____a_b 12 19 19 Y 128 0 63
def least____b_a 12 19 19 Y 128 0 63
def greatest_a_b 12 19 19 Y 128 0 63
def greatest_b_a 12 19 19 Y 128 0 63
case_____a_b 2010-01-01 00:00:00
case_____b_a 2001-01-01 10:20:30
coalesce_a_b 2010-01-01 00:00:00
coalesce_b_a 2001-01-01 10:20:30
if_______a_b 2001-01-01 10:20:30
if_______b_a 2010-01-01 00:00:00
ifnull___a_b 2010-01-01 00:00:00
ifnull___b_a 2001-01-01 10:20:30
least____a_b 2001-01-01 10:20:30
least____b_a 2001-01-01 10:20:30
greatest_a_b 2010-01-01 00:00:00
greatest_b_a 2010-01-01 00:00:00
CREATE TABLE t2 AS
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`___________a` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`case_______a` timestamp NULL DEFAULT NULL,
`case_____a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`coalesce___a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`coalesce_a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`if_______a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`ifnull___a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`least____a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`greatest_a_a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`___________b` time DEFAULT NULL,
`case_______b` time DEFAULT NULL,
`case_____b_b` time DEFAULT NULL,
`coalesce___b` time DEFAULT NULL,
`coalesce_b_b` time DEFAULT NULL,
`if_______b_b` time DEFAULT NULL,
`ifnull___b_b` time DEFAULT NULL,
`least____b_b` time DEFAULT NULL,
`greatest_b_b` time DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
CREATE TABLE t2 AS
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`case_____a_b` datetime DEFAULT NULL,
`case_____b_a` datetime DEFAULT NULL,
`coalesce_a_b` datetime DEFAULT NULL,
`coalesce_b_a` datetime DEFAULT NULL,
`if_______a_b` datetime DEFAULT NULL,
`if_______b_a` datetime DEFAULT NULL,
`ifnull___a_b` datetime DEFAULT NULL,
`ifnull___b_a` datetime NOT NULL,
`least____a_b` datetime DEFAULT NULL,
`least____b_a` datetime DEFAULT NULL,
`greatest_a_b` datetime DEFAULT NULL,
`greatest_b_a` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
#
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATETIME, b TIME);
INSERT INTO t1 VALUES ('2010-01-01 00:00:00','10:20:30');
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 a ___________a 12 19 19 Y 128 0 63
def case_______a 12 19 19 Y 128 0 63
def case_____a_a 12 19 19 Y 128 0 63
def coalesce___a 12 19 19 Y 128 0 63
def coalesce_a_a 12 19 19 Y 128 0 63
def if_______a_a 12 19 19 Y 128 0 63
def ifnull___a_a 12 19 19 Y 128 0 63
def least____a_a 12 19 19 Y 128 0 63
def greatest_a_a 12 19 19 Y 128 0 63
def test t1 t1 b ___________b 11 10 8 Y 128 0 63
def case_______b 11 10 8 Y 128 0 63
def case_____b_b 11 10 8 Y 128 0 63
def coalesce___b 11 10 8 Y 128 0 63
def coalesce_b_b 11 10 8 Y 128 0 63
def if_______b_b 11 10 8 Y 128 0 63
def ifnull___b_b 11 10 8 Y 128 0 63
def least____b_b 11 10 8 Y 128 0 63
def greatest_b_b 11 10 8 Y 128 0 63
___________a 2010-01-01 00:00:00
case_______a 2010-01-01 00:00:00
case_____a_a 2010-01-01 00:00:00
coalesce___a 2010-01-01 00:00:00
coalesce_a_a 2010-01-01 00:00:00
if_______a_a 2010-01-01 00:00:00
ifnull___a_a 2010-01-01 00:00:00
least____a_a 2010-01-01 00:00:00
greatest_a_a 2010-01-01 00:00:00
___________b 10:20:30
case_______b 10:20:30
case_____b_b 10:20:30
coalesce___b 10:20:30
coalesce_b_b 10:20:30
if_______b_b 10:20:30
ifnull___b_b 10:20:30
least____b_b 10:20:30
greatest_b_b 10:20:30
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def case_____a_b 12 19 19 Y 128 0 63
def case_____b_a 12 19 19 Y 128 0 63
def coalesce_a_b 12 19 19 Y 128 0 63
def coalesce_b_a 12 19 19 Y 128 0 63
def if_______a_b 12 19 19 Y 128 0 63
def if_______b_a 12 19 19 Y 128 0 63
def ifnull___a_b 12 19 19 Y 128 0 63
def ifnull___b_a 12 19 19 Y 128 0 63
def least____a_b 12 19 19 Y 128 0 63
def least____b_a 12 19 19 Y 128 0 63
def greatest_a_b 12 19 19 Y 128 0 63
def greatest_b_a 12 19 19 Y 128 0 63
case_____a_b 2010-01-01 00:00:00
case_____b_a 2001-01-01 10:20:30
coalesce_a_b 2010-01-01 00:00:00
coalesce_b_a 2001-01-01 10:20:30
if_______a_b 2001-01-01 10:20:30
if_______b_a 2010-01-01 00:00:00
ifnull___a_b 2010-01-01 00:00:00
ifnull___b_a 2001-01-01 10:20:30
least____a_b 2001-01-01 10:20:30
least____b_a 2001-01-01 10:20:30
greatest_a_b 2010-01-01 00:00:00
greatest_b_a 2010-01-01 00:00:00
CREATE TABLE t2 AS
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`___________a` datetime DEFAULT NULL,
`case_______a` datetime DEFAULT NULL,
`case_____a_a` datetime DEFAULT NULL,
`coalesce___a` datetime DEFAULT NULL,
`coalesce_a_a` datetime DEFAULT NULL,
`if_______a_a` datetime DEFAULT NULL,
`ifnull___a_a` datetime DEFAULT NULL,
`least____a_a` datetime DEFAULT NULL,
`greatest_a_a` datetime DEFAULT NULL,
`___________b` time DEFAULT NULL,
`case_______b` time DEFAULT NULL,
`case_____b_b` time DEFAULT NULL,
`coalesce___b` time DEFAULT NULL,
`coalesce_b_b` time DEFAULT NULL,
`if_______b_b` time DEFAULT NULL,
`ifnull___b_b` time DEFAULT NULL,
`least____b_b` time DEFAULT NULL,
`greatest_b_b` time DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
CREATE TABLE t2 AS
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`case_____a_b` datetime DEFAULT NULL,
`case_____b_a` datetime DEFAULT NULL,
`coalesce_a_b` datetime DEFAULT NULL,
`coalesce_b_a` datetime DEFAULT NULL,
`if_______a_b` datetime DEFAULT NULL,
`if_______b_a` datetime DEFAULT NULL,
`ifnull___a_b` datetime DEFAULT NULL,
`ifnull___b_a` datetime DEFAULT NULL,
`least____a_b` datetime DEFAULT NULL,
`least____b_a` datetime DEFAULT NULL,
`greatest_a_b` datetime DEFAULT NULL,
`greatest_b_a` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
#
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATETIME, b DATE);
INSERT INTO t1 VALUES ('2010-01-01 10:20:30','2001-01-02');
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 a ___________a 12 19 19 Y 128 0 63
def case_______a 12 19 19 Y 128 0 63
def case_____a_a 12 19 19 Y 128 0 63
def coalesce___a 12 19 19 Y 128 0 63
def coalesce_a_a 12 19 19 Y 128 0 63
def if_______a_a 12 19 19 Y 128 0 63
def ifnull___a_a 12 19 19 Y 128 0 63
def least____a_a 12 19 19 Y 128 0 63
def greatest_a_a 12 19 19 Y 128 0 63
def test t1 t1 b ___________b 10 10 10 Y 128 0 63
def case_______b 10 10 10 Y 128 0 63
def case_____b_b 10 10 10 Y 128 0 63
def coalesce___b 10 10 10 Y 128 0 63
def coalesce_b_b 10 10 10 Y 128 0 63
def if_______b_b 10 10 10 Y 128 0 63
def ifnull___b_b 10 10 10 Y 128 0 63
def least____b_b 10 10 10 Y 128 0 63
def greatest_b_b 10 10 10 Y 128 0 63
___________a 2010-01-01 10:20:30
case_______a 2010-01-01 10:20:30
case_____a_a 2010-01-01 10:20:30
coalesce___a 2010-01-01 10:20:30
coalesce_a_a 2010-01-01 10:20:30
if_______a_a 2010-01-01 10:20:30
ifnull___a_a 2010-01-01 10:20:30
least____a_a 2010-01-01 10:20:30
greatest_a_a 2010-01-01 10:20:30
___________b 2001-01-02
case_______b 2001-01-02
case_____b_b 2001-01-02
coalesce___b 2001-01-02
coalesce_b_b 2001-01-02
if_______b_b 2001-01-02
ifnull___b_b 2001-01-02
least____b_b 2001-01-02
greatest_b_b 2001-01-02
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def case_____a_b 12 19 19 Y 128 0 63
def case_____b_a 12 19 19 Y 128 0 63
def coalesce_a_b 12 19 19 Y 128 0 63
def coalesce_b_a 12 19 19 Y 128 0 63
def if_______a_b 12 19 19 Y 128 0 63
def if_______b_a 12 19 19 Y 128 0 63
def ifnull___a_b 12 19 19 Y 128 0 63
def ifnull___b_a 12 19 19 Y 128 0 63
def least____a_b 12 19 19 Y 128 0 63
def least____b_a 12 19 19 Y 128 0 63
def greatest_a_b 12 19 19 Y 128 0 63
def greatest_b_a 12 19 19 Y 128 0 63
case_____a_b 2010-01-01 10:20:30
case_____b_a 2001-01-02 00:00:00
coalesce_a_b 2010-01-01 10:20:30
coalesce_b_a 2001-01-02 00:00:00
if_______a_b 2001-01-02 00:00:00
if_______b_a 2010-01-01 10:20:30
ifnull___a_b 2010-01-01 10:20:30
ifnull___b_a 2001-01-02 00:00:00
least____a_b 2001-01-02 00:00:00
least____b_a 2001-01-02 00:00:00
greatest_a_b 2010-01-01 10:20:30
greatest_b_a 2010-01-01 10:20:30
CREATE TABLE t2 AS
SELECT
a AS ___________a,
CASE WHEN a IS NOT NULL THEN a END AS case_______a,
CASE WHEN a IS NOT NULL THEN a ELSE a END AS case_____a_a,
COALESCE(a) AS coalesce___a,
COALESCE(a, a) AS coalesce_a_a,
IF(a IS NULL, a, a) AS if_______a_a,
IFNULL(a, a) AS ifnull___a_a,
LEAST(a, a) AS least____a_a,
GREATEST(a, a) AS greatest_a_a,
b AS ___________b,
CASE WHEN a IS NOT NULL THEN b END AS case_______b,
CASE WHEN a IS NOT NULL THEN b ELSE b END AS case_____b_b,
COALESCE(b) AS coalesce___b,
COALESCE(b, b) AS coalesce_b_b,
IF(a IS NULL, b, b) AS if_______b_b,
IFNULL(b, b) AS ifnull___b_b,
LEAST(b, b) AS least____b_b,
GREATEST(b, b) AS greatest_b_b
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`___________a` datetime DEFAULT NULL,
`case_______a` datetime DEFAULT NULL,
`case_____a_a` datetime DEFAULT NULL,
`coalesce___a` datetime DEFAULT NULL,
`coalesce_a_a` datetime DEFAULT NULL,
`if_______a_a` datetime DEFAULT NULL,
`ifnull___a_a` datetime DEFAULT NULL,
`least____a_a` datetime DEFAULT NULL,
`greatest_a_a` datetime DEFAULT NULL,
`___________b` date DEFAULT NULL,
`case_______b` date DEFAULT NULL,
`case_____b_b` date DEFAULT NULL,
`coalesce___b` date DEFAULT NULL,
`coalesce_b_b` date DEFAULT NULL,
`if_______b_b` date DEFAULT NULL,
`ifnull___b_b` date DEFAULT NULL,
`least____b_b` date DEFAULT NULL,
`greatest_b_b` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
CREATE TABLE t2 AS
SELECT
CASE WHEN a IS NOT NULL THEN a ELSE b END AS case_____a_b,
CASE WHEN a IS NOT NULL THEN b ELSE a END AS case_____b_a,
COALESCE(a, b) AS coalesce_a_b,
COALESCE(b, a) AS coalesce_b_a,
IF(a IS NULL, a, b) AS if_______a_b,
IF(a IS NULL, b, a) AS if_______b_a,
IFNULL(a, b) AS ifnull___a_b,
IFNULL(b, a) AS ifnull___b_a,
LEAST(a, b) AS least____a_b,
LEAST(b, a) AS least____b_a,
GREATEST(a, b) AS greatest_a_b,
GREATEST(b, a) AS greatest_b_a
FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`case_____a_b` datetime DEFAULT NULL,
`case_____b_a` datetime DEFAULT NULL,
`coalesce_a_b` datetime DEFAULT NULL,
`coalesce_b_a` datetime DEFAULT NULL,
`if_______a_b` datetime DEFAULT NULL,
`if_______b_a` datetime DEFAULT NULL,
`ifnull___a_b` datetime DEFAULT NULL,
`ifnull___b_a` datetime DEFAULT NULL,
`least____a_b` datetime DEFAULT NULL,
`least____b_a` datetime DEFAULT NULL,
`greatest_a_b` datetime DEFAULT NULL,
`greatest_b_a` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
#
# MDEV-8873 Wrong field type or metadata for LEAST(int_column,string_column)
#
CREATE TABLE t1 (a INT, b VARCHAR(10));
@ -2317,5 +3029,35 @@ a
13836376518955650385
DROP TABLE t1;
#
# MDEV-5694 GREATEST(date, time) returns a wrong data type
#
SET timestamp=UNIX_TIMESTAMP('2010-01-01 01:02:03');
SELECT GREATEST(CURRENT_TIME, CURRENT_DATE), COALESCE(CURRENT_TIME, CURRENT_DATE);
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def GREATEST(CURRENT_TIME, CURRENT_DATE) 12 10 19 N 129 0 63
def COALESCE(CURRENT_TIME, CURRENT_DATE) 12 19 19 N 129 0 63
GREATEST(CURRENT_TIME, CURRENT_DATE) COALESCE(CURRENT_TIME, CURRENT_DATE)
2010-01-01 01:02:03 2010-01-01 01:02:03
CREATE TABLE t1 (a TIMESTAMP);
INSERT INTO t1 VALUES ('2010-01-01 10:20:30');
SELECT GREATEST(a,a) FROM t1;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def GREATEST(a,a) 7 19 19 N 161 0 63
GREATEST(a,a)
2010-01-01 10:20:30
DROP TABLE t1;
CREATE TABLE t1 (a TIMESTAMP, b DATETIME);
CREATE TABLE t2 AS SELECT LEAST(a,a),LEAST(b,b),LEAST(a,b) FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`LEAST(a,a)` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`LEAST(b,b)` datetime DEFAULT NULL,
`LEAST(a,b)` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
#
# End of 10.1 tests
#

32
mysql-test/r/func_time.result
View File

@ -1919,16 +1919,19 @@ drop table t1;
SET timestamp=UNIX_TIMESTAMP('2014-06-01 10:20:30');
select greatest(cast("0-0-0" as date), cast("10:20:05" as time));
greatest(cast("0-0-0" as date), cast("10:20:05" as time))
2014-06-01
2014-06-01 10:20:05
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '0000-00-00';
greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '0000-00-00'
0
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01';
greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01'
0
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01 10:20:05';
greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01 10:20:05'
1
select cast(greatest(cast("0-0-0" as date), cast("10:20:05" as time)) as datetime(6));
cast(greatest(cast("0-0-0" as date), cast("10:20:05" as time)) as datetime(6))
2014-06-01 00:00:00.000000
2014-06-01 10:20:05.000000
SET timestamp=DEFAULT;
select microsecond('12:00:00.123456'), microsecond('2009-12-31 23:59:59.000010');
microsecond('12:00:00.123456') microsecond('2009-12-31 23:59:59.000010')
@ -2563,18 +2566,12 @@ CREATE TABLE t1 (t TIME);
INSERT INTO t1 VALUES ('03:22:30'),('18:30:05');
SELECT CONVERT_TZ(GREATEST(t, CURRENT_DATE()), '+02:00', '+10:00') FROM t1;
CONVERT_TZ(GREATEST(t, CURRENT_DATE()), '+02:00', '+10:00')
2014-02-26 06:59:59
2014-02-26 06:59:59
Warnings:
Warning 1292 Truncated incorrect time value: '1296:00:00'
Warning 1292 Truncated incorrect time value: '1296:00:00'
2014-01-22 11:22:30
2014-01-23 02:30:05
SELECT GREATEST(t, CURRENT_DATE()) FROM t1;
GREATEST(t, CURRENT_DATE())
838:59:59
838:59:59
Warnings:
Warning 1292 Truncated incorrect time value: '1296:00:00'
Warning 1292 Truncated incorrect time value: '1296:00:00'
2014-01-22 03:22:30
2014-01-22 18:30:05
DROP TABLE t1;
SET TIMESTAMP=DEFAULT;
#
@ -2695,18 +2692,15 @@ SET timestamp=DEFAULT;
#
# MDEV-5750 Assertion `ltime->year == 0' fails on a query with EXTRACT DAY_MINUTE and TIME column
#
SET timestamp=UNIX_TIMESTAMP('2010-01-01 00:00:00');
CREATE TABLE t1 ( d DATE, t TIME );
INSERT INTO t1 VALUES ('2008-12-05','22:34:09'),('2005-03-27','14:26:02');
SELECT EXTRACT(DAY_MINUTE FROM GREATEST(t,d)), GREATEST(t,d) FROM t1;
EXTRACT(DAY_MINUTE FROM GREATEST(t,d)) GREATEST(t,d)
342259 838:59:59
342259 838:59:59
Warnings:
Warning 1292 Truncated incorrect time value: '9336:00:00'
Warning 1292 Truncated incorrect time value: '9336:00:00'
Warning 1292 Truncated incorrect time value: '2952:00:00'
Warning 1292 Truncated incorrect time value: '2952:00:00'
12234 2010-01-01 22:34:09
11426 2010-01-01 14:26:02
DROP TABLE t1;
SET timestamp=DEFAULT;
#
# MDEV-7221 from_days fails after null value
#

54
mysql-test/t/func_hybrid_type.test
View File

@ -81,6 +81,38 @@ INSERT INTO t1 VALUES (4294967295,2015);
--source include/func_hybrid_type.inc
DROP TABLE t1;
--echo #
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATE, b TIME);
INSERT INTO t1 VALUES ('2010-01-01','10:20:30');
--source include/func_hybrid_type.inc
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a TIMESTAMP, b TIME);
INSERT INTO t1 VALUES ('2010-01-01 00:00:00','10:20:30');
--source include/func_hybrid_type.inc
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATETIME, b TIME);
INSERT INTO t1 VALUES ('2010-01-01 00:00:00','10:20:30');
--source include/func_hybrid_type.inc
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
SET timestamp=UNIX_TIMESTAMP('2001-01-01 01:02:03');
CREATE TABLE t1 (a DATETIME, b DATE);
INSERT INTO t1 VALUES ('2010-01-01 10:20:30','2001-01-02');
--source include/func_hybrid_type.inc
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
--echo # MDEV-8873 Wrong field type or metadata for LEAST(int_column,string_column)
@ -111,6 +143,28 @@ INSERT INTO t1 (a) VALUES (13836376518955650385) ON DUPLICATE KEY UPDATE a=GREAT
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # MDEV-5694 GREATEST(date, time) returns a wrong data type
--echo #
SET timestamp=UNIX_TIMESTAMP('2010-01-01 01:02:03');
--disable_ps_protocol
--enable_metadata
# Expect DATETIME type (12) in metadata
SELECT GREATEST(CURRENT_TIME, CURRENT_DATE), COALESCE(CURRENT_TIME, CURRENT_DATE);
CREATE TABLE t1 (a TIMESTAMP);
INSERT INTO t1 VALUES ('2010-01-01 10:20:30');
# Expect TIMESTAMP type (7) in metadata
SELECT GREATEST(a,a) FROM t1;
DROP TABLE t1;
--disable_metadata
--enable_ps_protocol
CREATE TABLE t1 (a TIMESTAMP, b DATETIME);
CREATE TABLE t2 AS SELECT LEAST(a,a),LEAST(b,b),LEAST(a,b) FROM t1;
SHOW CREATE TABLE t2;
DROP TABLE t2;
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
--echo # End of 10.1 tests
--echo #

4
mysql-test/t/func_time.test
View File

@ -1180,6 +1180,7 @@ SET timestamp=UNIX_TIMESTAMP('2014-06-01 10:20:30');
select greatest(cast("0-0-0" as date), cast("10:20:05" as time));
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '0000-00-00';
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01';
select greatest(cast("0-0-0" as date), cast("10:20:05" as time)) = '2014-06-01 10:20:05';
select cast(greatest(cast("0-0-0" as date), cast("10:20:05" as time)) as datetime(6));
SET timestamp=DEFAULT;
@ -1629,11 +1630,12 @@ SET timestamp=DEFAULT;
--echo #
--echo # MDEV-5750 Assertion `ltime->year == 0' fails on a query with EXTRACT DAY_MINUTE and TIME column
--echo #
SET timestamp=UNIX_TIMESTAMP('2010-01-01 00:00:00');
CREATE TABLE t1 ( d DATE, t TIME );
INSERT INTO t1 VALUES ('2008-12-05','22:34:09'),('2005-03-27','14:26:02');
SELECT EXTRACT(DAY_MINUTE FROM GREATEST(t,d)), GREATEST(t,d) FROM t1;
DROP TABLE t1;
SET timestamp=DEFAULT;
--echo #
--echo # MDEV-7221 from_days fails after null value

37
sql/item_func.cc
View File

@ -2832,9 +2832,10 @@ void Item_func_min_max::fix_length_and_dec()
max_length=0;
maybe_null=0;
thd= current_thd;
compare_as_dates= find_date_time_item(args, arg_count, 0);
Item_result tmp_cmp_type= args[0]->cmp_type();
uint string_type_count= 0;
uint temporal_type_count= 0;
enum_field_types temporal_field_type= MYSQL_TYPE_DATETIME;
for (uint i=0 ; i < arg_count ; i++)
{
@ -2846,6 +2847,15 @@ void Item_func_min_max::fix_length_and_dec()
maybe_null= 1;
tmp_cmp_type= item_cmp_type(tmp_cmp_type, args[i]->cmp_type());
string_type_count+= args[i]->cmp_type() == STRING_RESULT;
if (args[i]->cmp_type() == TIME_RESULT)
{
if (!temporal_type_count)
temporal_field_type= args[i]->field_type();
else
temporal_field_type= Field::field_type_merge(temporal_field_type,
args[i]->field_type());
temporal_type_count++;
}
}
unsigned_flag= unsigned_count == arg_count; // if all args are unsigned
@ -2853,12 +2863,11 @@ void Item_func_min_max::fix_length_and_dec()
case TIME_RESULT:
// At least one temporal argument was found.
collation.set_numeric();
set_handler_by_field_type(compare_as_dates->field_type());
if (mysql_type_to_time_type(Item_func_min_max::field_type()) ==
MYSQL_TIMESTAMP_DATE)
decimals= 0;
else
set_handler_by_field_type(temporal_field_type);
if (is_temporal_type_with_time(temporal_field_type))
set_if_smaller(decimals, TIME_SECOND_PART_DIGITS);
else
decimals= 0;
break;
case STRING_RESULT:
@ -2956,12 +2965,12 @@ bool Item_func_min_max::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
for example, SELECT MONTH(GREATEST("2011-11-21", "2010-10-09"))
*/
if (!compare_as_dates)
if (Item_func_min_max::cmp_type() != TIME_RESULT)
return Item_func::get_date(ltime, fuzzy_date);
for (uint i=0; i < arg_count ; i++)
{
longlong res= args[i]->val_temporal_packed(compare_as_dates);
longlong res= args[i]->val_temporal_packed(Item_func_min_max::field_type());
/* Check if we need to stop (because of error or KILL) and stop the loop */
if (thd->is_error() || args[i]->null_value)
@ -2974,12 +2983,12 @@ bool Item_func_min_max::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
}
unpack_time(min_max, ltime);
if (compare_as_dates->field_type() == MYSQL_TYPE_DATE)
if (Item_func_min_max::field_type() == MYSQL_TYPE_DATE)
{
ltime->time_type= MYSQL_TIMESTAMP_DATE;
ltime->hour= ltime->minute= ltime->second= ltime->second_part= 0;
}
else if (compare_as_dates->field_type() == MYSQL_TYPE_TIME)
else if (Item_func_min_max::field_type() == MYSQL_TYPE_TIME)
{
ltime->time_type= MYSQL_TIMESTAMP_TIME;
ltime->hour+= (ltime->month * 32 + ltime->day) * 24;
@ -3001,7 +3010,7 @@ bool Item_func_min_max::get_date(MYSQL_TIME *ltime, ulonglong fuzzy_date)
String *Item_func_min_max::val_str(String *str)
{
DBUG_ASSERT(fixed == 1);
if (compare_as_dates)
if (Item_func_min_max::cmp_type() == TIME_RESULT)
return val_string_from_date(str);
switch (Item_func_min_max::result_type()) {
case INT_RESULT:
@ -3047,7 +3056,7 @@ double Item_func_min_max::val_real()
{
DBUG_ASSERT(fixed == 1);
double value=0.0;
if (compare_as_dates)
if (Item_func_min_max::cmp_type() == TIME_RESULT)
{
MYSQL_TIME ltime;
if (get_date(&ltime, 0))
@ -3076,7 +3085,7 @@ longlong Item_func_min_max::val_int()
{
DBUG_ASSERT(fixed == 1);
longlong value=0;
if (compare_as_dates)
if (Item_func_min_max::cmp_type() == TIME_RESULT)
{
MYSQL_TIME ltime;
if (get_date(&ltime, 0))
@ -3106,7 +3115,7 @@ my_decimal *Item_func_min_max::val_decimal(my_decimal *dec)
DBUG_ASSERT(fixed == 1);
my_decimal tmp_buf, *tmp, *UNINIT_VAR(res);
if (compare_as_dates)
if (Item_func_min_max::cmp_type() == TIME_RESULT)
{
MYSQL_TIME ltime;
if (get_date(&ltime, 0))

6
sql/item_func.h
View File

@ -1002,13 +1002,11 @@ class Item_func_min_max :public Item_func,
{
String tmp_value;
int cmp_sign;
/* An item used for issuing warnings while string to DATETIME conversion. */
Item *compare_as_dates;
THD *thd;
public:
Item_func_min_max(THD *thd, List<Item> &list, int cmp_sign_arg):
Item_func(thd, list), cmp_sign(cmp_sign_arg),
compare_as_dates(0) {}
Item_func(thd, list), cmp_sign(cmp_sign_arg)
{}
double val_real();
longlong val_int();
String *val_str(String *);