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MDEV-7778 impossible create copy of table, if table contain default value for timestamp field

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MDEV-8082 ON UPDATE is not preserved by CREATE TABLE .. SELECT
This commit is contained in:
Alexander Barkov 2015-05-05 13:22:09 +04:00
parent ae18a28500
commit 73c2356e7b
9 changed files with 192 additions and 89 deletions
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60
mysql-test/r/function_defaults.result
View File

@ -660,7 +660,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`a` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -669,7 +669,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`b` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -678,7 +678,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -705,7 +705,7 @@ CREATE TABLE t7 SELECT f FROM t1;
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`f` datetime DEFAULT NULL
`f` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t7;
f
@ -714,7 +714,7 @@ CREATE TABLE t8 SELECT g FROM t1;
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`g` datetime DEFAULT NULL
`g` datetime DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t8;
g
@ -723,7 +723,7 @@ CREATE TABLE t9 SELECT h FROM t1;
SHOW CREATE TABLE t9;
Table Create Table
t9 CREATE TABLE `t9` (
`h` datetime DEFAULT NULL
`h` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t9;
h
@ -774,14 +774,14 @@ t12 CREATE TABLE `t12` (
`s` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
`t` datetime DEFAULT NULL,
`u` datetime DEFAULT '1986-09-27 03:00:00',
`a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`b` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`a` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`b` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP,
`d` timestamp NOT NULL DEFAULT '1986-09-27 03:00:00',
`e` timestamp NULL DEFAULT NULL,
`f` datetime DEFAULT NULL,
`g` datetime DEFAULT NULL,
`h` datetime DEFAULT NULL,
`f` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`g` datetime DEFAULT CURRENT_TIMESTAMP,
`h` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
`i` datetime DEFAULT NULL,
`j` datetime DEFAULT '1986-09-27 03:00:00'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
@ -802,7 +802,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` datetime DEFAULT NULL
`a` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -811,7 +811,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` datetime DEFAULT NULL
`b` datetime DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -820,7 +820,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` datetime DEFAULT NULL
`c` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -2216,7 +2216,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`a` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -2225,7 +2225,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`b` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -2234,7 +2234,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000' ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -2261,7 +2261,7 @@ CREATE TABLE t7 SELECT f FROM t1;
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`f` datetime(6) DEFAULT NULL
`f` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t7;
f
@ -2270,7 +2270,7 @@ CREATE TABLE t8 SELECT g FROM t1;
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`g` datetime(6) DEFAULT NULL
`g` datetime(6) DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t8;
g
@ -2279,7 +2279,7 @@ CREATE TABLE t9 SELECT h FROM t1;
SHOW CREATE TABLE t9;
Table Create Table
t9 CREATE TABLE `t9` (
`h` datetime(6) DEFAULT NULL
`h` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t9;
h
@ -2330,14 +2330,14 @@ t12 CREATE TABLE `t12` (
`s` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6),
`t` datetime(6) DEFAULT NULL,
`u` datetime(6) DEFAULT '1986-09-27 03:00:00.098765',
`a` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`b` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`a` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
`b` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6),
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000' ON UPDATE CURRENT_TIMESTAMP(6),
`d` timestamp(6) NOT NULL DEFAULT '1986-09-27 03:00:00.098765',
`e` timestamp(6) NULL DEFAULT NULL,
`f` datetime(6) DEFAULT NULL,
`g` datetime(6) DEFAULT NULL,
`h` datetime(6) DEFAULT NULL,
`f` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
`g` datetime(6) DEFAULT CURRENT_TIMESTAMP(6),
`h` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6),
`i` datetime(6) DEFAULT NULL,
`j` datetime(6) DEFAULT '1986-09-27 03:00:00.098765'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
@ -2358,7 +2358,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` datetime(6) DEFAULT NULL
`a` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -2367,7 +2367,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` datetime(6) DEFAULT NULL
`b` datetime(6) DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -2376,7 +2376,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` datetime(6) DEFAULT NULL
`c` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t4;
c

60
mysql-test/r/function_defaults_innodb.result
View File

@ -661,7 +661,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`a` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -670,7 +670,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`b` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -679,7 +679,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00'
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -706,7 +706,7 @@ CREATE TABLE t7 SELECT f FROM t1;
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`f` datetime DEFAULT NULL
`f` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t7;
f
@ -715,7 +715,7 @@ CREATE TABLE t8 SELECT g FROM t1;
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`g` datetime DEFAULT NULL
`g` datetime DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t8;
g
@ -724,7 +724,7 @@ CREATE TABLE t9 SELECT h FROM t1;
SHOW CREATE TABLE t9;
Table Create Table
t9 CREATE TABLE `t9` (
`h` datetime DEFAULT NULL
`h` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t9;
h
@ -775,14 +775,14 @@ t12 CREATE TABLE `t12` (
`s` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
`t` datetime DEFAULT NULL,
`u` datetime DEFAULT '1986-09-27 03:00:00',
`a` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`b` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
`a` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`b` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`c` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP,
`d` timestamp NOT NULL DEFAULT '1986-09-27 03:00:00',
`e` timestamp NULL DEFAULT NULL,
`f` datetime DEFAULT NULL,
`g` datetime DEFAULT NULL,
`h` datetime DEFAULT NULL,
`f` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`g` datetime DEFAULT CURRENT_TIMESTAMP,
`h` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
`i` datetime DEFAULT NULL,
`j` datetime DEFAULT '1986-09-27 03:00:00'
) ENGINE=InnoDB DEFAULT CHARSET=latin1
@ -803,7 +803,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` datetime DEFAULT NULL
`a` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -812,7 +812,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` datetime DEFAULT NULL
`b` datetime DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -821,7 +821,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` datetime DEFAULT NULL
`c` datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -2217,7 +2217,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`a` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -2226,7 +2226,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`b` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -2235,7 +2235,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000'
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000' ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t4;
c
@ -2262,7 +2262,7 @@ CREATE TABLE t7 SELECT f FROM t1;
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`f` datetime(6) DEFAULT NULL
`f` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t7;
f
@ -2271,7 +2271,7 @@ CREATE TABLE t8 SELECT g FROM t1;
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`g` datetime(6) DEFAULT NULL
`g` datetime(6) DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t8;
g
@ -2280,7 +2280,7 @@ CREATE TABLE t9 SELECT h FROM t1;
SHOW CREATE TABLE t9;
Table Create Table
t9 CREATE TABLE `t9` (
`h` datetime(6) DEFAULT NULL
`h` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t9;
h
@ -2331,14 +2331,14 @@ t12 CREATE TABLE `t12` (
`s` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6),
`t` datetime(6) DEFAULT NULL,
`u` datetime(6) DEFAULT '1986-09-27 03:00:00.098765',
`a` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`b` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000',
`a` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
`b` timestamp(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6),
`c` timestamp(6) NOT NULL DEFAULT '0000-00-00 00:00:00.000000' ON UPDATE CURRENT_TIMESTAMP(6),
`d` timestamp(6) NOT NULL DEFAULT '1986-09-27 03:00:00.098765',
`e` timestamp(6) NULL DEFAULT NULL,
`f` datetime(6) DEFAULT NULL,
`g` datetime(6) DEFAULT NULL,
`h` datetime(6) DEFAULT NULL,
`f` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6),
`g` datetime(6) DEFAULT CURRENT_TIMESTAMP(6),
`h` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6),
`i` datetime(6) DEFAULT NULL,
`j` datetime(6) DEFAULT '1986-09-27 03:00:00.098765'
) ENGINE=InnoDB DEFAULT CHARSET=latin1
@ -2359,7 +2359,7 @@ CREATE TABLE t2 SELECT a FROM t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` datetime(6) DEFAULT NULL
`a` datetime(6) DEFAULT CURRENT_TIMESTAMP(6) ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t2;
a
@ -2368,7 +2368,7 @@ CREATE TABLE t3 SELECT b FROM t1;
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`b` datetime(6) DEFAULT NULL
`b` datetime(6) DEFAULT CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t3;
b
@ -2377,7 +2377,7 @@ CREATE TABLE t4 SELECT c FROM t1;
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c` datetime(6) DEFAULT NULL
`c` datetime(6) DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP(6)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SELECT * FROM t4;
c

2
mysql-test/r/type_ranges.result
View File

@ -255,7 +255,7 @@ ushort smallint(5) unsigned zerofill NULL NO 00000 #
umedium mediumint(8) unsigned NULL NO 0 #
ulong int(11) unsigned NULL NO 0 #
ulonglong bigint(13) unsigned NULL NO 0 #
time_stamp timestamp NULL NO 0000-00-00 00:00:00 #
time_stamp timestamp NULL NO CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP #
date_field char(10) latin1_swedish_ci YES NULL #
time_field time NULL YES NULL #
date_time datetime NULL YES NULL #

41
mysql-test/r/type_timestamp.result
View File

@ -690,4 +690,45 @@ drop table t1;
drop function f1;
set timestamp=0;
SET time_zone=DEFAULT;
#
# MDEV-7778 impossible create copy of table, if table contain default value for timestamp field
#
SET sql_mode="NO_ZERO_DATE";
CREATE TABLE t1 (
ts timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE t2 AS SELECT * from t1 LIMIT 0;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`ts` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`ts` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1,t2;
SET sql_mode=DEFAULT;
#
# MDEV-8082 ON UPDATE is not preserved by CREATE TABLE .. SELECT
#
CREATE TABLE t1 (
vc VARCHAR(10) NOT NULL DEFAULT 'test',
ts timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
);
CREATE TABLE t2 AS SELECT * FROM t1 LIMIT 0;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`vc` varchar(10) NOT NULL DEFAULT 'test',
`ts` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`vc` varchar(10) NOT NULL DEFAULT 'test',
`ts` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1,t2;
End of 10.0 tests

4
mysql-test/r/type_timestamp_hires.result
View File

@ -109,7 +109,7 @@ create table t3 like t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp(4) NOT NULL DEFAULT '0000-00-00 00:00:00.0000'
`a` timestamp(4) NOT NULL DEFAULT CURRENT_TIMESTAMP(4) ON UPDATE CURRENT_TIMESTAMP(4)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
show create table t3;
Table Create Table
@ -130,7 +130,7 @@ create table t3 select max(a), min(a), sum(a), avg(a) from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` timestamp(4) NOT NULL DEFAULT '0000-00-00 00:00:00.0000',
`a` timestamp(4) NOT NULL DEFAULT CURRENT_TIMESTAMP(4) ON UPDATE CURRENT_TIMESTAMP(4),
`a+0` decimal(25,4) NOT NULL DEFAULT '0.0000',
`a-1` decimal(25,4) NOT NULL DEFAULT '0.0000',
`a*1` decimal(25,4) NOT NULL DEFAULT '0.0000',

27
mysql-test/t/type_timestamp.test
View File

@ -492,4 +492,31 @@ drop function f1;
set timestamp=0;
SET time_zone=DEFAULT;
--echo #
--echo # MDEV-7778 impossible create copy of table, if table contain default value for timestamp field
--echo #
SET sql_mode="NO_ZERO_DATE";
CREATE TABLE t1 (
ts timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
);
CREATE TABLE t2 AS SELECT * from t1 LIMIT 0;
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t2;
DROP TABLE t1,t2;
SET sql_mode=DEFAULT;
--echo #
--echo # MDEV-8082 ON UPDATE is not preserved by CREATE TABLE .. SELECT
--echo #
CREATE TABLE t1 (
vc VARCHAR(10) NOT NULL DEFAULT 'test',
ts timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP
);
CREATE TABLE t2 AS SELECT * FROM t1 LIMIT 0;
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t2;
DROP TABLE t1,t2;
--echo End of 10.0 tests

69
sql/field.cc
View File

@ -9923,35 +9923,52 @@ Create_field::Create_field(Field *old_field,Field *orig_field)
char_length= length;
/*
Copy the default value from the column object orig_field, if:
1) The column has a constant default value.
2) The column type is not a BLOB type.
3) The original column (old_field) was properly initialized with a record
buffer pointer.
4) The original column doesn't have a default function to auto-initialize
the column on INSERT
*/
if (!(flags & (NO_DEFAULT_VALUE_FLAG | BLOB_FLAG)) && // 1) 2)
old_field->ptr && orig_field && // 3)
!old_field->has_insert_default_function()) // 4)
{
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff), charset);
my_ptrdiff_t diff;
Copy the default (constant/function) from the column object orig_field, if
supplied. We do this if all these conditions are met:
/* Get the value from default_values */
diff= (my_ptrdiff_t) (orig_field->table->s->default_values-
orig_field->table->record[0]);
orig_field->move_field_offset(diff); // Points now at default_values
if (!orig_field->is_real_null())
- The column allows a default.
- The column type is not a BLOB type.
- The original column (old_field) was properly initialized with a record
buffer pointer.
*/
if (!(flags & (NO_DEFAULT_VALUE_FLAG | BLOB_FLAG)) &&
old_field->ptr != NULL &&
orig_field != NULL)
{
bool default_now= false;
if (real_type_with_now_as_default(sql_type))
{
char buff[MAX_FIELD_WIDTH], *pos;
String tmp(buff, sizeof(buff), charset), *res;
res= orig_field->val_str(&tmp);
pos= (char*) sql_strmake(res->ptr(), res->length());
def= new Item_string(pos, res->length(), charset);
// The SQL type of the new field allows a function default:
default_now= orig_field->has_insert_default_function();
bool update_now= orig_field->has_update_default_function();
if (default_now && update_now)
unireg_check= Field::TIMESTAMP_DNUN_FIELD;
else if (default_now)
unireg_check= Field::TIMESTAMP_DN_FIELD;
else if (update_now)
unireg_check= Field::TIMESTAMP_UN_FIELD;
}
if (!default_now) // Give a constant default
{
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff), charset);
/* Get the value from default_values */
my_ptrdiff_t diff= orig_field->table->default_values_offset();
orig_field->move_field_offset(diff); // Points now at default_values
if (!orig_field->is_real_null())
{
char buff[MAX_FIELD_WIDTH], *pos;
String tmp(buff, sizeof(buff), charset), *res;
res= orig_field->val_str(&tmp);
pos= (char*) sql_strmake(res->ptr(), res->length());
def= new Item_string(pos, res->length(), charset);
}
orig_field->move_field_offset(-diff); // Back to record[0]
}
orig_field->move_field_offset(-diff); // Back to record[0]
}
}

14
sql/field.h
View File

@ -118,6 +118,20 @@ inline bool is_temporal_type_with_date(enum_field_types type)
}
/**
Tests if a field real type can have "DEFAULT CURRENT_TIMESTAMP"
@param type Field type, as returned by field->real_type().
@retval true If field real type can have "DEFAULT CURRENT_TIMESTAMP".
@retval false If field real type can not have "DEFAULT CURRENT_TIMESTAMP".
*/
inline bool real_type_with_now_as_default(enum_field_types type)
{
return type == MYSQL_TYPE_TIMESTAMP || type == MYSQL_TYPE_TIMESTAMP2 ||
type == MYSQL_TYPE_DATETIME || type == MYSQL_TYPE_DATETIME2;
}
/**
Recognizer for concrete data type (called real_type for some reason),
returning true if it is one of the TIMESTAMP types.

4
sql/table.h
View File

@ -1374,6 +1374,10 @@ public:
}
bool update_const_key_parts(COND *conds);
my_ptrdiff_t default_values_offset() const
{ return (my_ptrdiff_t) (s->default_values - record[0]); }
uint actual_n_key_parts(KEY *keyinfo);
ulong actual_key_flags(KEY *keyinfo);
int update_default_fields();