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Kirill Smelkov
mariadb
Commits
4ca34093
Commit
4ca34093
authored
Feb 26, 2006
by
dlenev@mysql.com
Browse files
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Merge bk-internal.mysql.com:/home/bk/mysql-5.0-runtime
into mysql.com:/home/dlenev/src/mysql-5.0-bg13525
parents
49ad134e
480dcb7f
Changes
7
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Showing
7 changed files
with
513 additions
and
36 deletions
+513
-36
mysql-test/r/trigger.result
mysql-test/r/trigger.result
+102
-1
mysql-test/t/trigger.test
mysql-test/t/trigger.test
+86
-1
sql/sql_rename.cc
sql/sql_rename.cc
+21
-2
sql/sql_table.cc
sql/sql_table.cc
+12
-1
sql/sql_trigger.cc
sql/sql_trigger.cc
+269
-21
sql/sql_trigger.h
sql/sql_trigger.h
+16
-1
sql/sql_yacc.yy
sql/sql_yacc.yy
+7
-9
No files found.
mysql-test/r/trigger.result
View file @
4ca34093
drop table if exists t1, t2, t3;
drop table if exists t1, t2, t3
, t4
;
drop view if exists v1;
drop database if exists mysqltest;
drop function if exists f1;
...
...
@@ -785,6 +785,107 @@ create trigger test.t1_bi before insert on t1 for each row set @a:=0;
ERROR 3D000: No database selected
drop trigger t1_bi;
ERROR 3D000: No database selected
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
insert into t1 values (101);
select @a;
@a
101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t1 set @a:=new.id
rename table t1 to t2;
insert into t2 values (102);
select @a;
@a
102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t2 set @a:=new.id
alter table t2 rename to t3;
insert into t3 values (103);
select @a;
@a
103
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t3 set @a:=new.id
alter table t3 rename to t4, add column val int default 0;
insert into t4 values (104, 1);
select @a;
@a
104
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t4 set @a:=new.id
drop trigger t1_bi;
drop table t4;
create database mysqltest;
use mysqltest;
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
insert into t1 values (101);
select @a;
@a
101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema trigger_name event_object_schema event_object_table action_statement
mysqltest t1_bi mysqltest t1 set @a:=new.id
rename table t1 to test.t2;
ERROR HY000: Trigger in wrong schema
insert into t1 values (102);
select @a;
@a
102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema trigger_name event_object_schema event_object_table action_statement
mysqltest t1_bi mysqltest t1 set @a:=new.id
drop trigger test.t1_bi;
ERROR HY000: Trigger does not exist
drop trigger t1_bi;
drop table t1;
drop database mysqltest;
use test;
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
create trigger t1_ai after insert on t1 for each row set @b:=new.id;
insert into t1 values (101);
select @a, @b;
@a @b
101 101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t1 set @a:=new.id
test t1_ai test t1 set @b:=new.id
rename table t1 to t2;
ERROR HY000: Can't create/write to file './test/t1_ai.TRN~' (Errcode: 13)
insert into t1 values (102);
select @a, @b;
@a @b
102 102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema trigger_name event_object_schema event_object_table action_statement
test t1_bi test t1 set @a:=new.id
test t1_ai test t1 set @b:=new.id
drop trigger t1_bi;
drop trigger t1_ai;
drop table t1;
create table t1 (i int);
create trigger t1_bi before insert on t1 for each row return 0;
ERROR 42000: RETURN is only allowed in a FUNCTION
...
...
mysql-test/t/trigger.test
View file @
4ca34093
...
...
@@ -3,7 +3,7 @@
#
--
disable_warnings
drop
table
if
exists
t1
,
t2
,
t3
;
drop
table
if
exists
t1
,
t2
,
t3
,
t4
;
drop
view
if
exists
v1
;
drop
database
if
exists
mysqltest
;
drop
function
if
exists
f1
;
...
...
@@ -959,6 +959,91 @@ create trigger test.t1_bi before insert on t1 for each row set @a:=0;
drop
trigger
t1_bi
;
connection
default
;
#
# Test for bug #13525 "Rename table does not keep info of triggers"
#
create
table
t1
(
id
int
);
create
trigger
t1_bi
before
insert
on
t1
for
each
row
set
@
a
:=
new
.
id
;
insert
into
t1
values
(
101
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
rename
table
t1
to
t2
;
# Trigger should work after rename
insert
into
t2
values
(
102
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
# Let us check that the same works for simple ALTER TABLE ... RENAME
alter
table
t2
rename
to
t3
;
insert
into
t3
values
(
103
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
# And for more complex ALTER TABLE
alter
table
t3
rename
to
t4
,
add
column
val
int
default
0
;
insert
into
t4
values
(
104
,
1
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
# .TRN file should be updated with new table name
drop
trigger
t1_bi
;
drop
table
t4
;
# Rename between different databases if triggers exist should fail
create
database
mysqltest
;
use
mysqltest
;
create
table
t1
(
id
int
);
create
trigger
t1_bi
before
insert
on
t1
for
each
row
set
@
a
:=
new
.
id
;
insert
into
t1
values
(
101
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
or
event_object_schema
=
'mysqltest'
;
--
error
ER_TRG_IN_WRONG_SCHEMA
rename
table
t1
to
test
.
t2
;
insert
into
t1
values
(
102
);
select
@
a
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
or
event_object_schema
=
'mysqltest'
;
# There should be no fantom .TRN files
--
error
ER_TRG_DOES_NOT_EXIST
drop
trigger
test
.
t1_bi
;
drop
trigger
t1_bi
;
drop
table
t1
;
drop
database
mysqltest
;
use
test
;
# And now let us check that the properly handle rename if there is some
# error during it (that we rollback such renames completely).
create
table
t1
(
id
int
);
create
trigger
t1_bi
before
insert
on
t1
for
each
row
set
@
a
:=
new
.
id
;
create
trigger
t1_ai
after
insert
on
t1
for
each
row
set
@
b
:=
new
.
id
;
insert
into
t1
values
(
101
);
select
@
a
,
@
b
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
# Trick which makes update of second .TRN file impossible
system
echo
dummy
>
var
/
master
-
data
/
test
/
t1_ai
.
TRN
~
;
system
chmod
000
var
/
master
-
data
/
test
/
t1_ai
.
TRN
~
;
--
error
1
rename
table
t1
to
t2
;
# 't1' should be still there and triggers should work correctly
insert
into
t1
values
(
102
);
select
@
a
,
@
b
;
select
trigger_schema
,
trigger_name
,
event_object_schema
,
event_object_table
,
action_statement
from
information_schema
.
triggers
where
event_object_schema
=
'test'
;
system
chmod
600
var
/
master
-
data
/
test
/
t1_ai
.
TRN
;
# Let us check that updates to .TRN files were rolled back too
drop
trigger
t1_bi
;
drop
trigger
t1_ai
;
drop
table
t1
;
# Test for bug #16829 "Firing trigger with RETURN crashes the server"
# RETURN is not supposed to be used anywhere except functions, so error
# should be returned when one attempts to create trigger with RETURN.
...
...
sql/sql_rename.cc
View file @
4ca34093
...
...
@@ -19,6 +19,7 @@
*/
#include "mysql_priv.h"
#include "sql_trigger.h"
static
TABLE_LIST
*
rename_tables
(
THD
*
thd
,
TABLE_LIST
*
table_list
,
...
...
@@ -176,8 +177,26 @@ rename_tables(THD *thd, TABLE_LIST *table_list, bool skip_error)
if
(
table_type
==
DB_TYPE_UNKNOWN
)
my_error
(
ER_FILE_NOT_FOUND
,
MYF
(
0
),
name
,
my_errno
);
else
rc
=
mysql_rename_table
(
table_type
,
ren_table
->
db
,
old_alias
,
new_table
->
db
,
new_alias
);
{
if
(
!
(
rc
=
mysql_rename_table
(
table_type
,
ren_table
->
db
,
old_alias
,
new_table
->
db
,
new_alias
)))
{
if
((
rc
=
Table_triggers_list
::
change_table_name
(
thd
,
ren_table
->
db
,
old_alias
,
new_table
->
db
,
new_alias
)))
{
/*
We've succeeded in renaming table's .frm and in updating
corresponding handler data, but have failed to update table's
triggers appropriately. So let us revert operations on .frm
and handler's data and report about failure to rename table.
*/
(
void
)
mysql_rename_table
(
table_type
,
new_table
->
db
,
new_alias
,
ren_table
->
db
,
old_alias
);
}
}
}
break
;
}
case
FRMTYPE_VIEW
:
...
...
sql/sql_table.cc
View file @
4ca34093
...
...
@@ -3293,6 +3293,13 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
close_cached_table
(
thd
,
table
);
if
(
mysql_rename_table
(
old_db_type
,
db
,
table_name
,
new_db
,
new_alias
))
error
=
-
1
;
else
if
(
Table_triggers_list
::
change_table_name
(
thd
,
db
,
table_name
,
new_db
,
new_alias
))
{
VOID
(
mysql_rename_table
(
old_db_type
,
new_db
,
new_alias
,
db
,
table_name
));
error
=
-
1
;
}
}
VOID
(
pthread_mutex_unlock
(
&
LOCK_open
));
}
...
...
@@ -3841,7 +3848,11 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
VOID
(
quick_rm_table
(
new_db_type
,
new_db
,
tmp_name
));
}
else
if
(
mysql_rename_table
(
new_db_type
,
new_db
,
tmp_name
,
new_db
,
new_alias
))
new_alias
)
||
(
new_name
!=
table_name
||
new_db
!=
db
)
&&
// we also do rename
Table_triggers_list
::
change_table_name
(
thd
,
db
,
table_name
,
new_db
,
new_alias
))
{
// Try to get everything back
error
=
1
;
VOID
(
quick_rm_table
(
new_db_type
,
new_db
,
new_alias
));
...
...
sql/sql_trigger.cc
View file @
4ca34093
...
...
@@ -65,7 +65,6 @@ File_option sql_modes_parameters=
*/
static
const
int
TRG_NUM_REQUIRED_PARAMETERS
=
4
;
static
const
int
TRG_MAX_VERSIONS
=
3
;
/*
Structure representing contents of .TRN file which are used to support
...
...
@@ -467,8 +466,7 @@ bool Table_triggers_list::create_trigger(THD *thd, TABLE_LIST *tables,
definer_host
->
str
,
NullS
)
-
trg_definer
->
str
;
if
(
!
sql_create_definition_file
(
&
dir
,
&
file
,
&
triggers_file_type
,
(
gptr
)
this
,
triggers_file_parameters
,
TRG_MAX_VERSIONS
))
(
gptr
)
this
,
triggers_file_parameters
,
0
))
return
0
;
err_with_cleanup:
...
...
@@ -492,7 +490,8 @@ err_with_cleanup:
True - error
*/
static
bool
rm_trigger_file
(
char
*
path
,
char
*
db
,
char
*
table_name
)
static
bool
rm_trigger_file
(
char
*
path
,
const
char
*
db
,
const
char
*
table_name
)
{
strxnmov
(
path
,
FN_REFLEN
,
mysql_data_home
,
"/"
,
db
,
"/"
,
table_name
,
triggers_file_ext
,
NullS
);
...
...
@@ -516,7 +515,8 @@ static bool rm_trigger_file(char *path, char *db, char *table_name)
True - error
*/
static
bool
rm_trigname_file
(
char
*
path
,
char
*
db
,
char
*
trigger_name
)
static
bool
rm_trigname_file
(
char
*
path
,
const
char
*
db
,
const
char
*
trigger_name
)
{
strxnmov
(
path
,
FN_REFLEN
,
mysql_data_home
,
"/"
,
db
,
"/"
,
trigger_name
,
trigname_file_ext
,
NullS
);
...
...
@@ -525,6 +525,38 @@ static bool rm_trigname_file(char *path, char *db, char *trigger_name)
}
/*
Helper function that saves .TRG file for Table_triggers_list object.
SYNOPSIS
save_trigger_file()
triggers Table_triggers_list object for which file should be saved
db Name of database for subject table
table_name Name of subject table
RETURN VALUE
FALSE Success
TRUE Error
*/
static
bool
save_trigger_file
(
Table_triggers_list
*
triggers
,
const
char
*
db
,
const
char
*
table_name
)
{
char
dir_buff
[
FN_REFLEN
],
file_buff
[
FN_REFLEN
];
LEX_STRING
dir
,
file
;
strxnmov
(
dir_buff
,
FN_REFLEN
,
mysql_data_home
,
"/"
,
db
,
"/"
,
NullS
);
dir
.
length
=
unpack_filename
(
dir_buff
,
dir_buff
);
dir
.
str
=
dir_buff
;
file
.
length
=
strxnmov
(
file_buff
,
FN_REFLEN
,
table_name
,
triggers_file_ext
,
NullS
)
-
file_buff
;
file
.
str
=
file_buff
;
return
sql_create_definition_file
(
&
dir
,
&
file
,
&
triggers_file_type
,
(
gptr
)
triggers
,
triggers_file_parameters
,
0
);
}
/*
Drop trigger for table.
...
...
@@ -578,20 +610,7 @@ bool Table_triggers_list::drop_trigger(THD *thd, TABLE_LIST *tables)
}
else
{
char
dir_buff
[
FN_REFLEN
],
file_buff
[
FN_REFLEN
];
LEX_STRING
dir
,
file
;
strxnmov
(
dir_buff
,
FN_REFLEN
,
mysql_data_home
,
"/"
,
tables
->
db
,
"/"
,
NullS
);
dir
.
length
=
unpack_filename
(
dir_buff
,
dir_buff
);
dir
.
str
=
dir_buff
;
file
.
length
=
strxnmov
(
file_buff
,
FN_REFLEN
,
tables
->
table_name
,
triggers_file_ext
,
NullS
)
-
file_buff
;
file
.
str
=
file_buff
;
if
(
sql_create_definition_file
(
&
dir
,
&
file
,
&
triggers_file_type
,
(
gptr
)
this
,
triggers_file_parameters
,
TRG_MAX_VERSIONS
))
if
(
save_trigger_file
(
this
,
tables
->
db
,
tables
->
table_name
))
return
1
;
}
...
...
@@ -831,12 +850,12 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
if
(
!
names_only
&&
triggers
->
prepare_record1_accessors
(
table
))
DBUG_RETURN
(
1
);
char
*
trg_name_buff
;
List_iterator_fast
<
ulonglong
>
itm
(
triggers
->
definition_modes_list
);
List_iterator_fast
<
LEX_STRING
>
it_definer
(
triggers
->
definers_list
);
LEX
*
old_lex
=
thd
->
lex
,
lex
;
sp_rcontext
*
save_spcont
=
thd
->
spcont
;
ulong
save_sql_mode
=
thd
->
variables
.
sql_mode
;
LEX_STRING
*
on_table_name
;
thd
->
lex
=
&
lex
;
...
...
@@ -902,6 +921,21 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
&
table
->
mem_root
))
goto
err_with_lex_cleanup
;
if
(
!
(
on_table_name
=
(
LEX_STRING
*
)
alloc_root
(
&
table
->
mem_root
,
sizeof
(
LEX_STRING
))))
goto
err_with_lex_cleanup
;
*
on_table_name
=
lex
.
ident
;
if
(
triggers
->
on_table_names_list
.
push_back
(
on_table_name
,
&
table
->
mem_root
))
goto
err_with_lex_cleanup
;
/*
Let us check that we correctly update trigger definitions when we
rename tables with triggers.
*/
DBUG_ASSERT
(
!
my_strcasecmp
(
table_alias_charset
,
lex
.
query_tables
->
db
,
db
)
&&
!
my_strcasecmp
(
table_alias_charset
,
lex
.
query_tables
->
table_name
,
table_name
));
if
(
names_only
)
{
lex_end
(
&
lex
);
...
...
@@ -1067,7 +1101,7 @@ static TABLE_LIST *add_table_for_trigger(THD *thd, sp_name *trig)
lex
->
query_tables
=
0
;
lex
->
query_tables_last
=
&
lex
->
query_tables
;
DBUG_RETURN
(
sp_add_to_query_tables
(
thd
,
lex
,
trig
->
m_db
.
str
,
trigname
.
trigger_table
.
str
,
TL_
WRIT
E
));
trigname
.
trigger_table
.
str
,
TL_
IGNOR
E
));
}
...
...
@@ -1137,6 +1171,220 @@ end:
}
/*
Update .TRG file after renaming triggers' subject table
(change name of table in triggers' definitions).
SYNOPSIS
change_table_name_in_triggers()
thd Thread context
db_name Database of subject table
old_table_name Old subject table's name
new_table_name New subject table's name
RETURN VALUE
FALSE Success
TRUE Failure
*/
bool
Table_triggers_list
::
change_table_name_in_triggers
(
THD
*
thd
,
const
char
*
db_name
,
LEX_STRING
*
old_table_name
,
LEX_STRING
*
new_table_name
)
{
char
path_buff
[
FN_REFLEN
];
LEX_STRING
*
def
,
*
on_table_name
,
new_def
;
ulonglong
*
sql_mode
;
ulong
save_sql_mode
=
thd
->
variables
.
sql_mode
;
List_iterator_fast
<
LEX_STRING
>
it_def
(
definitions_list
);
List_iterator_fast
<
LEX_STRING
>
it_on_table_name
(
on_table_names_list
);
List_iterator_fast
<
ulonglong
>
it_mode
(
definition_modes_list
);
uint
on_q_table_name_len
,
before_on_len
;
String
buff
;
DBUG_ASSERT
(
definitions_list
.
elements
==
on_table_names_list
.
elements
&&
definitions_list
.
elements
==
definition_modes_list
.
elements
);
while
((
def
=
it_def
++
))
{
on_table_name
=
it_on_table_name
++
;
thd
->
variables
.
sql_mode
=
*
(
it_mode
++
);
/* Construct CREATE TRIGGER statement with new table name. */
buff
.
length
(
0
);
before_on_len
=
on_table_name
->
str
-
def
->
str
;
buff
.
append
(
def
->
str
,
before_on_len
);
buff
.
append
(
STRING_WITH_LEN
(
"ON "
));
append_identifier
(
thd
,
&
buff
,
new_table_name
->
str
,
new_table_name
->
length
);
on_q_table_name_len
=
buff
.
length
()
-
before_on_len
;
buff
.
append
(
on_table_name
->
str
+
on_table_name
->
length
,
def
->
length
-
(
before_on_len
+
on_table_name
->
length
));
/*
It is OK to allocate some memory on table's MEM_ROOT since this
table instance will be thrown out at the end of rename anyway.
*/
new_def
.
str
=
memdup_root
(
&
table
->
mem_root
,
buff
.
ptr
(),
buff
.
length
());
new_def
.
length
=
buff
.
length
();
on_table_name
->
str
=
new_def
.
str
+
before_on_len
;
on_table_name
->
length
=
on_q_table_name_len
;
*
def
=
new_def
;
}
thd
->
variables
.
sql_mode
=
save_sql_mode
;
if
(
thd
->
is_fatal_error
)
return
TRUE
;
/* OOM */
if
(
save_trigger_file
(
this
,
db_name
,
new_table_name
->
str
))
return
TRUE
;
if
(
rm_trigger_file
(
path_buff
,
db_name
,
old_table_name
->
str
))
{
(
void
)
rm_trigger_file
(
path_buff
,
db_name
,
new_table_name
->
str
);
return
TRUE
;
}
return
FALSE
;
}
/*
Iterate though Table_triggers_list::names_list list and update .TRN files
after renaming triggers' subject table.
SYNOPSIS
change_table_name_in_trignames()
db_name Database of subject table
new_table_name New subject table's name
stopper Pointer to Table_triggers_list::names_list at
which we should stop updating.
RETURN VALUE
0 Success
non-0 Failure, pointer to Table_triggers_list::names_list element
for which update failed.
*/
LEX_STRING
*
Table_triggers_list
::
change_table_name_in_trignames
(
const
char
*
db_name
,
LEX_STRING
*
new_table_name
,
LEX_STRING
*
stopper
)
{
char
dir_buff
[
FN_REFLEN
],
trigname_buff
[
FN_REFLEN
];
struct
st_trigname
trigname
;
LEX_STRING
dir
,
trigname_file
;
LEX_STRING
*
trigger
;
List_iterator_fast
<
LEX_STRING
>
it_name
(
names_list
);
strxnmov
(
dir_buff
,
FN_REFLEN
,
mysql_data_home
,
"/"
,
db_name
,
"/"
,
NullS
);
dir
.
length
=
unpack_filename
(
dir_buff
,
dir_buff
);
dir
.
str
=
dir_buff
;
while
((
trigger
=
it_name
++
)
!=
stopper
)
{
trigname_file
.
length
=
strxnmov
(
trigname_buff
,
FN_REFLEN
,
trigger
->
str
,
trigname_file_ext
,
NullS
)
-
trigname_buff
;
trigname_file
.
str
=
trigname_buff
;
trigname
.
trigger_table
=
*
new_table_name
;
if
(
sql_create_definition_file
(
&
dir
,
&
trigname_file
,
&
trigname_file_type
,
(
gptr
)
&
trigname
,
trigname_file_parameters
,
0
))
return
trigger
;
}
return
0
;
}
/*
Update .TRG and .TRN files after renaming triggers' subject table.
SYNOPSIS
change_table_name()
thd Thread context
db Old database of subject table
old_table Old name of subject table
new_db New database for subject table
new_table New name of subject table
NOTE
This method tries to leave trigger related files in consistent state,
i.e. it either will complete successfully, or will fail leaving files
in their initial state.
RETURN VALUE
FALSE Success
TRUE Error
*/
bool
Table_triggers_list
::
change_table_name
(
THD
*
thd
,
const
char
*
db
,
const
char
*
old_table
,
const
char
*
new_db
,
const
char
*
new_table
)
{
TABLE
table
;
bool
result
=
0
;
LEX_STRING
*
err_trigname
;
DBUG_ENTER
(
"change_table_name"
);
bzero
(
&
table
,
sizeof
(
table
));
init_alloc_root
(
&
table
.
mem_root
,
8192
,
0
);
safe_mutex_assert_owner
(
&
LOCK_open
);
if
(
Table_triggers_list
::
check_n_load
(
thd
,
db
,
old_table
,
&
table
,
TRUE
))
{
result
=
1
;
goto
end
;
}
if
(
table
.
triggers
)
{
LEX_STRING_WITH_INIT
old_table_name
(
old_table
,
strlen
(
old_table
));
LEX_STRING_WITH_INIT
new_table_name
(
new_table
,
strlen
(
new_table
));
/*
Since triggers should be in the same schema as their subject tables
moving table with them between two schemas raises too many questions.
(E.g. what should happen if in new schema we already have trigger
with same name ?).
*/
if
(
my_strcasecmp
(
table_alias_charset
,
db
,
new_db
))
{
my_error
(
ER_TRG_IN_WRONG_SCHEMA
,
MYF
(
0
));
result
=
1
;
goto
end
;
}
if
(
table
.
triggers
->
change_table_name_in_triggers
(
thd
,
db
,
&
old_table_name
,
&
new_table_name
))
{
result
=
1
;
goto
end
;
}
if
((
err_trigname
=
table
.
triggers
->
change_table_name_in_trignames
(
db
,
&
new_table_name
,
0
)))
{
/*
If we were unable to update one of .TRN files properly we will
revert all changes that we have done and report about error.
We assume that we will be able to undo our changes without errors
(we can't do much if there will be an error anyway).
*/
(
void
)
table
.
triggers
->
change_table_name_in_trignames
(
db
,
&
old_table_name
,
err_trigname
);
(
void
)
table
.
triggers
->
change_table_name_in_triggers
(
thd
,
db
,
&
new_table_name
,
&
old_table_name
);
result
=
1
;
goto
end
;
}
}
end:
delete
table
.
triggers
;
free_root
(
&
table
.
mem_root
,
MYF
(
0
));
DBUG_RETURN
(
result
);
}
bool
Table_triggers_list
::
process_triggers
(
THD
*
thd
,
trg_event_type
event
,
trg_action_time_type
time_type
,
...
...
sql/sql_trigger.h
View file @
4ca34093
...
...
@@ -46,6 +46,11 @@ class Table_triggers_list: public Sql_alloc
used in CREATE/DROP TRIGGER for looking up trigger by name.
*/
List
<
LEX_STRING
>
names_list
;
/*
List of "ON table_name" parts in trigger definitions, used for
updating trigger definitions during RENAME TABLE.
*/
List
<
LEX_STRING
>
on_table_names_list
;
/*
Key representing triggers for this table in set of all stored
routines used by statement.
...
...
@@ -97,7 +102,10 @@ public:
static
bool
check_n_load
(
THD
*
thd
,
const
char
*
db
,
const
char
*
table_name
,
TABLE
*
table
,
bool
names_only
);
static
bool
drop_all_triggers
(
THD
*
thd
,
char
*
db
,
char
*
table_name
);
static
bool
change_table_name
(
THD
*
thd
,
const
char
*
db
,
const
char
*
old_table
,
const
char
*
new_db
,
const
char
*
new_table
);
bool
has_delete_triggers
()
{
return
(
bodies
[
TRG_EVENT_DELETE
][
TRG_ACTION_BEFORE
]
||
...
...
@@ -117,6 +125,13 @@ public:
private:
bool
prepare_record1_accessors
(
TABLE
*
table
);
LEX_STRING
*
change_table_name_in_trignames
(
const
char
*
db_name
,
LEX_STRING
*
new_table_name
,
LEX_STRING
*
stopper
);
bool
change_table_name_in_triggers
(
THD
*
thd
,
const
char
*
db_name
,
LEX_STRING
*
old_table_name
,
LEX_STRING
*
new_table_name
);
};
extern
const
LEX_STRING
trg_action_time_type_names
[];
...
...
sql/sql_yacc.yy
View file @
4ca34093
...
...
@@ -9126,8 +9126,8 @@ view_check_option:
**************************************************************************/
trigger_tail:
TRIGGER_SYM remember_name sp_name trg_action_time trg_event
ON
table_ident
FOR_SYM EACH_SYM ROW_SYM
TRIGGER_SYM remember_name sp_name trg_action_time trg_event
ON
remember_name table_ident remember_end
FOR_SYM EACH_SYM ROW_SYM
{
LEX *lex= Lex;
sp_head *sp;
...
...
@@ -9144,7 +9144,9 @@ trigger_tail:
sp->init(lex);
lex->trigger_definition_begin= $2;
lex->ident.str= $7;
lex->ident.length= $9 - $7;
sp->m_type= TYPE_ENUM_TRIGGER;
lex->sphead= sp;
lex->spname= $3;
...
...
@@ -9181,15 +9183,11 @@ trigger_tail:
We have to do it after parsing trigger body, because some of
sp_proc_stmt alternatives are not saving/restoring LEX, so
lex->query_tables can be wiped out.
QQ: What are other consequences of this?
QQ: Could we loosen lock type in certain cases ?
*/
if (!lex->select_lex.add_table_to_list(YYTHD, $
7,
if (!lex->select_lex.add_table_to_list(YYTHD, $
8,
(LEX_STRING*) 0,
TL_OPTION_UPDATING,
TL_WRIT
E))
TL_IGNOR
E))
YYABORT;
}
;
...
...
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