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Merge bk-internal.mysql.com:/home/bk/mysql-4.0

Browse source 
into mysql.com:/home/dlenev/src/mysql-4.0-bg4131-3
This commit is contained in:
dlenev@mysql.com 2004-09-27 00:50:29 +04:00
commit 4ff9f1f558
7 changed files with 144 additions and 29 deletions
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60
mysql-test/r/type_timestamp.result
View file

@ -122,40 +122,41 @@ t2 t4 t6 t8 t10 t12 t14
0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00 0000-00-00 00:00:00
1997-12-31 23:47:59 1997-12-31 23:47:59 1997-12-31 23:47:59 1997-12-31 23:47:59 1997-12-31 23:47:59 1997-12-31 23:47:59 1997-12-31 23:47:59
drop table t1;
set new=0;
create table t1 (t1 timestamp default '2003-01-01 00:00:00',
t2 timestamp default '2003-01-01 00:00:00');
set TIMESTAMP=1000000000;
insert into t1 values();
select * from t1;
t1 t2
2001-09-09 04:46:40 2003-01-01 00:00:00
20010909044640 20030101000000
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`t1` timestamp(14) NOT NULL,
`t2` timestamp(14) NOT NULL default '2003-01-01 00:00:00'
`t2` timestamp(14) NOT NULL default '20030101000000'
) TYPE=MyISAM
show columns from t1;
Field Type Null Key Default Extra
t1 timestamp(14) YES NULL
t2 timestamp(14) YES 2003-01-01 00:00:00
t2 timestamp(14) YES 20030101000000
show columns from t1 like 't2';
Field Type Null Key Default Extra
t2 timestamp(14) YES 2003-01-01 00:00:00
t2 timestamp(14) YES 20030101000000
create table t2 (select * from t1);
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`t1` timestamp(14) NOT NULL,
`t2` timestamp(14) NOT NULL default '2003-01-01 00:00:00'
`t2` timestamp(14) NOT NULL default '20030101000000'
) TYPE=MyISAM
alter table t1 add column t0 timestamp first;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`t0` timestamp(14) NOT NULL,
`t1` timestamp(14) NOT NULL default '2003-01-01 00:00:00',
`t2` timestamp(14) NOT NULL default '2003-01-01 00:00:00'
`t1` timestamp(14) NOT NULL default '20030101000000',
`t2` timestamp(14) NOT NULL default '20030101000000'
) TYPE=MyISAM
drop table t1,t2;
create table t1 (ts1 timestamp, ts2 timestamp);
@ -164,8 +165,8 @@ insert into t1 values ();
insert into t1 values (DEFAULT, DEFAULT);
select * from t1;
ts1 ts2
2001-09-09 04:46:40 0000-00-00 00:00:00
2001-09-09 04:46:40 0000-00-00 00:00:00
20010909044640 00000000000000
20010909044640 00000000000000
drop table t1;
create table t1 (ts timestamp(19));
show create table t1;
@ -179,3 +180,44 @@ select * from t1;
ts
2001-09-09 04:46:40
drop table t1;
set new=1;
create table t1 (a char(2), t timestamp);
insert into t1 values ('a', '2004-01-01 00:00:00'), ('a', '2004-01-01 01:00:00'),
('b', '2004-02-01 00:00:00');
select max(t) from t1 group by a;
max(t)
2004-01-01 01:00:00
2004-02-01 00:00:00
drop table t1;
create table t1 (ts1 timestamp);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`ts1` timestamp(19) NOT NULL
) TYPE=MyISAM
alter table t1 add ts2 timestamp;
set new=0;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`ts1` timestamp(19) NOT NULL,
`ts2` timestamp(19) NOT NULL default '0000-00-00 00:00:00'
) TYPE=MyISAM
drop table t1;
create table t1 (ts1 timestamp);
insert into t1 values ('2004-01-01 00:00:00'), ('2004-01-01 01:00:00');
select * from t1;
ts1
20040101000000
20040101010000
set new=1;
select * from t1;
ts1
2004-01-01 00:00:00
2004-01-01 01:00:00
set new=0;
select * from t1;
ts1
20040101000000
20040101010000
drop table t1;

32
mysql-test/t/type_timestamp.test
View file

@ -71,6 +71,7 @@ select * from t1;
set new=1;
select * from t1;
drop table t1;
set new=0;
#
# Bug #1885, bug #2539.
@ -116,3 +117,34 @@ set TIMESTAMP=1000000000;
insert into t1 values ();
select * from t1;
drop table t1;
#
# Test for bug #4131, TIMESTAMP columns missing minutes and seconds when
# using GROUP BY in @@new=1 mode.
#
set new=1;
create table t1 (a char(2), t timestamp);
insert into t1 values ('a', '2004-01-01 00:00:00'), ('a', '2004-01-01 01:00:00'),
('b', '2004-02-01 00:00:00');
select max(t) from t1 group by a;
drop table t1;
#
# More --new mode tests
# Both columns created before and during alter should have same length.
#
create table t1 (ts1 timestamp);
show create table t1;
alter table t1 add ts2 timestamp;
set new=0;
show create table t1;
drop table t1;
# Selecting from table in --new mode should not affect further selects.
create table t1 (ts1 timestamp);
insert into t1 values ('2004-01-01 00:00:00'), ('2004-01-01 01:00:00');
select * from t1;
set new=1;
select * from t1;
set new=0;
select * from t1;
drop table t1;

24
sql/field.cc
View file

@ -2467,8 +2467,7 @@ void Field_double::sql_type(String &res) const
enum Item_result Field_timestamp::result_type() const
{
return (!current_thd->variables.new_mode &&
(field_length == 8 || field_length == 14) ? INT_RESULT :
return ((field_length == 8 || field_length == 14) ? INT_RESULT :
STRING_RESULT);
}
@ -2480,6 +2479,9 @@ Field_timestamp::Field_timestamp(char *ptr_arg, uint32 len_arg,
:Field_num(ptr_arg, len_arg, (uchar*) 0,0,
unireg_check_arg, field_name_arg, table_arg,
0, 1, 1)
#if MYSQL_VERSION_ID < 40100
, orig_field_length(len_arg)
#endif
{
if (table && !table->timestamp_field)
{
@ -2697,7 +2699,7 @@ String *Field_timestamp::val_str(String *val_buffer,
time_t time_arg;
struct tm *l_time;
struct tm tm_tmp;
my_bool new_format= (current_thd->variables.new_mode) || field_length == 19,
my_bool new_format= field_length == 19,
full_year=(field_length == 8 || field_length == 14 || new_format);
int real_field_length= new_format ? 19 : field_length;
@ -2859,22 +2861,6 @@ void Field_timestamp::set_time()
longstore(ptr,tmp);
}
/*
This is an exact copy of Field_num except that 'length' is depending
on --new mode
*/
void Field_timestamp::make_field(Send_field *field)
{
field->table_name=table_name;
field->col_name=field_name;
/* If --new, then we are using "YYYY-MM-DD HH:MM:SS" format */
field->length= current_thd->variables.new_mode ? 19 : field_length;
field->type=type();
field->flags=table->maybe_null ? (flags & ~NOT_NULL_FLAG) : flags;
field->decimals=dec;
}
/****************************************************************************
** time type

13
sql/field.h
View file

@ -546,6 +546,13 @@ public:
class Field_timestamp :public Field_num {
#if MYSQL_VERSION_ID < 40100
/*
We save the original field length here because field_length is
changed to a mock value in case when the 'new_mode' is in effect.
*/
uint32 orig_field_length;
#endif
public:
Field_timestamp(char *ptr_arg, uint32 len_arg,
enum utype unireg_check_arg, const char *field_name_arg,
@ -587,7 +594,11 @@ public:
void fill_and_store(char *from,uint len);
bool get_date(TIME *ltime,bool fuzzydate);
bool get_time(TIME *ltime);
void make_field(Send_field *field);
#if MYSQL_VERSION_ID < 40100
friend TABLE *open_table(THD *thd,const char *db,const char *table_name,
const char *alias,bool *refresh);
#endif
};

25
sql/sql_base.cc
View file

@ -941,6 +941,31 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
for (uint i=0 ; i < table->fields ; i++)
table->field[i]->table_name=table->table_name;
}
#if MYSQL_VERSION_ID < 40100
/*
If per-connection "new" variable (represented by variables.new_mode)
is set then we should pretend that the length of TIMESTAMP field is 19.
The cheapest (from perfomance viewpoint) way to achieve that is to set
field_length of all Field_timestamp objects in a table after opening
it (to 19 if new_mode is true or to original field length otherwise).
We save value of new_mode variable in TABLE::timestamp_mode to
not perform this setup if new_mode value is the same between sequential
table opens.
*/
my_bool new_mode= thd->variables.new_mode;
if (table->timestamp_mode != new_mode)
{
for (uint i=0 ; i < table->fields ; i++)
{
Field *field= table->field[i];
if (field->type() == FIELD_TYPE_TIMESTAMP)
field->field_length= new_mode ? 19 :
((Field_timestamp *)(field))->orig_field_length;
}
table->timestamp_mode= new_mode;
}
#endif
/* These variables are also set in reopen_table() */
table->tablenr=thd->current_tablenr++;
table->used_fields=0;

11
sql/sql_parse.cc
View file

@ -3242,7 +3242,18 @@ bool add_field_to_list(char *field_name, enum_field_types type,
}
break;
case FIELD_TYPE_TIMESTAMP:
#if MYSQL_VERSION_ID < 40100
/*
When in in --new mode, we should create TIMESTAMP(19) fields by default;
otherwise we will have problems with ALTER TABLE changing lengths of
existing TIMESTAMP fields to 19 and adding new fields with length 14.
*/
if (thd->variables.new_mode)
new_field->length= 19;
else if (!length)
#else
if (!length)
#endif
new_field->length= 14; // Full date YYYYMMDDHHMMSS
else if (new_field->length != 19)
{

8
sql/table.h
View file

@ -106,6 +106,14 @@ struct st_table {
*found_next_number_field, /* Set on open */
*rowid_field;
Field_timestamp *timestamp_field;
#if MYSQL_VERSION_ID < 40100
/*
Indicates whenever we have to set field_length members of all TIMESTAMP
fields to 19 (to honour 'new_mode' variable) or to original
field_length values.
*/
my_bool timestamp_mode;
#endif
my_string comment; /* Comment about table */
REGINFO reginfo; /* field connections */
MEM_ROOT mem_root;