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Patch for Bug#55850 (Trigger warnings not cleared).

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The problem was that the warnings risen by a trigger were not cleared upon
successful completion. The warnings should be cleared if the trigger completes
successfully.

The fix is to skip merging warnings into caller's Warning Info for triggers.
This commit is contained in:
Alexander Nozdrin 2010-10-26 15:48:08 +04:00
parent 2a4f50a5df
commit 1ed6c86396
7 changed files with 162 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
mysql-test/r/signal.result
View File

@ -1379,9 +1379,6 @@ MESSAGE_TEXT = msg,
MYSQL_ERRNO = 1012;
end $$
insert into t1 values (1), (2) $$
Warnings:
Warning 1012 This trigger SIGNAL a warning, a=1
Warning 1012 This trigger SIGNAL a warning, a=2
drop trigger t1_ai $$
create trigger t1_ai after insert on t1 for each row
begin
@ -1416,11 +1413,7 @@ MESSAGE_TEXT = NEW.msg,
MYSQL_ERRNO = NEW.errno;
end $$
insert into t1 set errno=1012, msg='Warning message 1 in trigger' $$
Warnings:
Warning 1012 Warning message 1 in trigger
insert into t1 set errno=1013, msg='Warning message 2 in trigger' $$
Warnings:
Warning 1013 Warning message 2 in trigger
drop table t1 $$
drop table if exists t1 $$
drop procedure if exists p1 $$

91
mysql-test/r/sp-error.result
View File

@ -1877,9 +1877,6 @@ DROP PROCEDURE p1;
#
# Bug#5889: Exit handler for a warning doesn't hide the warning in trigger
#
# - Case 1
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
@ -1889,40 +1886,13 @@ SET NEW.a = 10;
SET NEW.a = 99999999999;
END|
UPDATE t1 SET b = 20;
Warnings:
Warning 1264 Out of range value for column 'a' at row 1
SHOW WARNINGS;
Level Code Message
Warning 1264 Out of range value for column 'a' at row 1
SELECT * FROM t1;
a b
10 20
DROP TRIGGER t1_bu;
DROP TABLE t1;
# - Case 2
CREATE TABLE t1(a INT);
CREATE TABLE t2(b CHAR(1));
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t2 VALUES('ab'); # Produces a warning.
INSERT INTO t2 VALUES('b'); # Does not produce a warning,
# previous warning should be cleared.
END|
INSERT INTO t1 VALUES(0);
SHOW WARNINGS;
Level Code Message
SELECT * FROM t1;
a
0
SELECT * FROM t2;
b
a
b
DROP TRIGGER t1_bi;
DROP TABLE t1;
DROP TABLE t2;
#
# Bug#9857: Stored procedures: handler for sqlwarning ignored
#
@ -1961,3 +1931,64 @@ Warning 1365 Division by 0
DROP PROCEDURE p1;
DROP PROCEDURE p2;
SET sql_mode = @sql_mode_saved;
#
# Bug#55850: Trigger warnings not cleared.
#
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP PROCEDURE IF EXISTS p1;
CREATE TABLE t1(x SMALLINT, y SMALLINT, z SMALLINT);
CREATE TABLE t2(a SMALLINT, b SMALLINT, c SMALLINT,
d SMALLINT, e SMALLINT, f SMALLINT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
INSERT INTO t2(a, b, c) VALUES(99999, 99999, 99999);
CREATE TRIGGER t1_ai AFTER INSERT ON t1 FOR EACH ROW
INSERT INTO t2(d, e, f) VALUES(99999, 99999, 99999);
CREATE PROCEDURE p1()
INSERT INTO t1 VALUES(99999, 99999, 99999);
CALL p1();
Warnings:
Warning 1264 Out of range value for column 'x' at row 1
Warning 1264 Out of range value for column 'y' at row 1
Warning 1264 Out of range value for column 'z' at row 1
SHOW WARNINGS;
Level Code Message
Warning 1264 Out of range value for column 'x' at row 1
Warning 1264 Out of range value for column 'y' at row 1
Warning 1264 Out of range value for column 'z' at row 1
DROP TABLE t1;
DROP TABLE t2;
DROP PROCEDURE p1;
# ----------------------------------------------------------------------
CREATE TABLE t1(x SMALLINT, y SMALLINT, z SMALLINT);
CREATE TABLE t2(a SMALLINT, b SMALLINT, c SMALLINT NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t2 VALUES(
CAST('111111 ' AS SIGNED),
CAST('222222 ' AS SIGNED),
NULL);
END|
CREATE PROCEDURE p1()
INSERT INTO t1 VALUES(99999, 99999, 99999);
CALL p1();
ERROR 23000: Column 'c' cannot be null
SHOW WARNINGS;
Level Code Message
Warning 1264 Out of range value for column 'x' at row 1
Warning 1264 Out of range value for column 'y' at row 1
Warning 1264 Out of range value for column 'z' at row 1
Warning 1292 Truncated incorrect INTEGER value: '111111 '
Warning 1264 Out of range value for column 'a' at row 1
Warning 1292 Truncated incorrect INTEGER value: '222222 '
Warning 1264 Out of range value for column 'b' at row 1
Error 1048 Column 'c' cannot be null
DROP TABLE t1;
DROP TABLE t2;
DROP PROCEDURE p1;

23
mysql-test/r/trigger.result
View File

@ -1072,8 +1072,6 @@ SELECT @x;
NULL
SET @x=2;
UPDATE t1 SET i1 = @x;
Warnings:
Warning 1365 Division by 0
SELECT @x;
@x
NULL
@ -1085,9 +1083,6 @@ SELECT @x;
NULL
SET @x=4;
UPDATE t1 SET i1 = @x;
Warnings:
Warning 1365 Division by 0
Warning 1365 Division by 0
SELECT @x;
@x
NULL
@ -1198,8 +1193,6 @@ Warnings:
Warning 1365 Division by 0
create trigger t1_bi before insert on t1 for each row set @a:=1/0|
insert into t1 values(20, 20)|
Warnings:
Warning 1365 Division by 0
drop trigger t1_bi|
create trigger t1_bi before insert on t1 for each row
begin
@ -1218,8 +1211,6 @@ set @a:=1/0;
end|
set @check=0, @t4_bi_called=0, @t4_bu_called=0|
insert into t1 values(30, 30)|
Warnings:
Warning 1365 Division by 0
select @check, @t4_bi_called, @t4_bu_called|
@check @t4_bi_called @t4_bu_called
2 1 1
@ -2090,12 +2081,8 @@ SELECT 1 FROM t1 c WHERE
END//
SET @bug51650 = 1;
INSERT IGNORE INTO t2 VALUES();
Warnings:
Warning 1329 No data - zero rows fetched, selected, or processed
INSERT IGNORE INTO t1 SET b = '777';
INSERT IGNORE INTO t2 SET a = '111';
Warnings:
Warning 1329 No data - zero rows fetched, selected, or processed
SET @bug51650 = 1;
INSERT IGNORE INTO t2 SET a = '777';
DROP TRIGGER trg1;
@ -2177,8 +2164,6 @@ SELECT 'ab' INTO a;
SELECT 'a' INTO a;
END|
INSERT INTO t1 VALUES (1);
Warnings:
Warning 1265 Data truncated for column 'a' at row 1
DROP TRIGGER trg1;
DROP TABLE t1;
DROP TRIGGER IF EXISTS trg1;
@ -2196,20 +2181,12 @@ DECLARE trg2 CHAR;
SELECT 'ab' INTO trg2;
END|
INSERT INTO t1 VALUES (0);
Warnings:
Warning 1265 Data truncated for column 'trg1' at row 1
Warning 1265 Data truncated for column 'trg2' at row 1
SELECT * FROM t1;
a
0
SHOW WARNINGS;
Level Code Message
INSERT INTO t1 VALUES (1),(2);
Warnings:
Warning 1265 Data truncated for column 'trg1' at row 1
Warning 1265 Data truncated for column 'trg2' at row 1
Warning 1265 Data truncated for column 'trg1' at row 1
Warning 1265 Data truncated for column 'trg2' at row 1
DROP TRIGGER trg1;
DROP TRIGGER trg2;
DROP TABLE t1;

6
mysql-test/suite/rpl/r/rpl_row_trig003.result
View File

@ -69,15 +69,9 @@ INSERT INTO test.t2 VALUES(NULL,0,'Testing MySQL databases is a cool ', 'MySQL C
UPDATE test.t1 SET b1 = 0 WHERE b1 = 1;
INSERT INTO test.t2 VALUES(NULL,1,'This is an after update test.', 'If this works, total will not be zero on the master or slave',1.4321,5.221,0,YEAR(NOW()),NOW());
UPDATE test.t2 SET b1 = 0 WHERE b1 = 1;
Warnings:
Error 1329 No data - zero rows fetched, selected, or processed
INSERT INTO test.t1 VALUES(NULL,1,'add some more test data test.', 'and hope for the best', 3.321,5.221,0,YEAR(NOW()),NOW());
DELETE FROM test.t1 WHERE id = 1;
Warnings:
Error 1329 No data - zero rows fetched, selected, or processed
DELETE FROM test.t2 WHERE id = 1;
Warnings:
Error 1329 No data - zero rows fetched, selected, or processed
DROP TRIGGER test.t1_bi;
DROP TRIGGER test.t2_ai;
DROP TRIGGER test.t1_bu;

114
mysql-test/t/sp-error.test
View File

@ -2719,10 +2719,6 @@ DROP PROCEDURE p1;
--echo # Bug#5889: Exit handler for a warning doesn't hide the warning in trigger
--echo #
--echo
--echo # - Case 1
--echo
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);
@ -2747,36 +2743,6 @@ SELECT * FROM t1;
DROP TRIGGER t1_bu;
DROP TABLE t1;
--echo
--echo # - Case 2
--echo
CREATE TABLE t1(a INT);
CREATE TABLE t2(b CHAR(1));
delimiter |;
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t2 VALUES('ab'); # Produces a warning.
INSERT INTO t2 VALUES('b'); # Does not produce a warning,
# previous warning should be cleared.
END|
delimiter ;|
INSERT INTO t1 VALUES(0);
SHOW WARNINGS;
SELECT * FROM t1;
SELECT * FROM t2;
DROP TRIGGER t1_bi;
DROP TABLE t1;
DROP TABLE t2;
--echo #
--echo # Bug#9857: Stored procedures: handler for sqlwarning ignored
--echo #
@ -2813,3 +2779,83 @@ SHOW WARNINGS;
DROP PROCEDURE p1;
DROP PROCEDURE p2;
SET sql_mode = @sql_mode_saved;
--echo #
--echo # Bug#55850: Trigger warnings not cleared.
--echo #
--disable_warnings
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP PROCEDURE IF EXISTS p1;
--enable_warnings
CREATE TABLE t1(x SMALLINT, y SMALLINT, z SMALLINT);
CREATE TABLE t2(a SMALLINT, b SMALLINT, c SMALLINT,
d SMALLINT, e SMALLINT, f SMALLINT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
INSERT INTO t2(a, b, c) VALUES(99999, 99999, 99999);
CREATE TRIGGER t1_ai AFTER INSERT ON t1 FOR EACH ROW
INSERT INTO t2(d, e, f) VALUES(99999, 99999, 99999);
CREATE PROCEDURE p1()
INSERT INTO t1 VALUES(99999, 99999, 99999);
# What happened before the patch was:
# - INSERT INTO t1 added 3 warnings about overflow in 'x', 'y' and 'z' columns;
# - t1_bi run and added 3 warnings about overflow in 'a', 'b' and 'c' columns;
# - t1_ai run and added 3 warnings about overflow in 'd', 'e' and 'f' columns;
# => we had 9 warnings.
#
# Now what happens is:
# - INSERT INTO t1 adds 3 warnings about overflow in 'x', 'y' and 'z' columns;
# - t1_bi adds 3 warnings about overflow in 'a', 'b' and 'c' columns;
# - The warnings added by triggers are cleared;
# - t1_ai run and added 3 warnings about overflow in 'd', 'e' and 'f' columns;
# - The warnings added by triggers are cleared;
# => we have 3 warnings.
--echo
CALL p1();
--echo
SHOW WARNINGS;
--echo
DROP TABLE t1;
DROP TABLE t2;
DROP PROCEDURE p1;
--echo # ----------------------------------------------------------------------
CREATE TABLE t1(x SMALLINT, y SMALLINT, z SMALLINT);
CREATE TABLE t2(a SMALLINT, b SMALLINT, c SMALLINT NOT NULL);
delimiter |;
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t2 VALUES(
CAST('111111 ' AS SIGNED),
CAST('222222 ' AS SIGNED),
NULL);
END|
delimiter ;|
CREATE PROCEDURE p1()
INSERT INTO t1 VALUES(99999, 99999, 99999);
--echo
--error ER_BAD_NULL_ERROR
CALL p1();
--echo
SHOW WARNINGS;
--echo
DROP TABLE t1;
DROP TABLE t2;
DROP PROCEDURE p1;

26
sql/sp_head.cc
View File

@ -1176,10 +1176,17 @@ find_handler_after_execution(THD *thd, sp_rcontext *ctx)
/**
Execute the routine. The main instruction jump loop is there.
Assume the parameters already set.
@param thd Thread context.
@param merge_da_on_success Flag specifying if Warning Info should be
propagated to the caller on Completion
Condition or not.
@todo
- Will write this SP statement into binlog separately
(TODO: consider changing the condition to "not inside event union")
@return Error status.
@retval
FALSE on success
@retval
@ -1187,7 +1194,7 @@ find_handler_after_execution(THD *thd, sp_rcontext *ctx)
*/
bool
sp_head::execute(THD *thd)
sp_head::execute(THD *thd, bool merge_da_on_success)
{
DBUG_ENTER("sp_head::execute");
char saved_cur_db_name_buf[NAME_LEN+1];
@ -1481,8 +1488,15 @@ sp_head::execute(THD *thd)
thd->stmt_arena= old_arena;
state= EXECUTED;
/* Restore the caller's original warning information area. */
saved_warning_info->merge_with_routine_info(thd, thd->warning_info);
/*
Restore the caller's original warning information area:
- warnings generated during trigger execution should not be
propagated to the caller on success;
- if there was an exception during execution, warning info should be
propagated to the caller in any case.
*/
if (err_status || merge_da_on_success)
saved_warning_info->merge_with_routine_info(thd, thd->warning_info);
thd->warning_info= saved_warning_info;
done:
@ -1704,7 +1718,7 @@ sp_head::execute_trigger(THD *thd,
thd->spcont= nctx;
err_status= execute(thd);
err_status= execute(thd, FALSE);
err_with_cleanup:
thd->restore_active_arena(&call_arena, &backup_arena);
@ -1921,7 +1935,7 @@ sp_head::execute_function(THD *thd, Item **argp, uint argcount,
*/
thd->set_n_backup_active_arena(&call_arena, &backup_arena);
err_status= execute(thd);
err_status= execute(thd, TRUE);
thd->restore_active_arena(&call_arena, &backup_arena);
@ -2154,7 +2168,7 @@ sp_head::execute_procedure(THD *thd, List<Item> *args)
#endif
if (!err_status)
err_status= execute(thd);
err_status= execute(thd, TRUE);
if (save_log_general)
thd->variables.option_bits &= ~OPTION_LOG_OFF;

2
sql/sp_head.h
View File

@ -527,7 +527,7 @@ private:
HASH m_sptabs;
bool
execute(THD *thd);
execute(THD *thd, bool merge_da_on_success);
/**
Perform a forward flow analysis in the generated code.