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Bug#56271: Wrong comparison result with STR_TO_DATE function

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The Item_func_str_to_date class wasn't providing correct integer DATETIME
representation as expected. This led to wrong comparison result and didn't
allowed the STR_TO_DATE function to be used with indexes.
Also, STR_TO_DATE function was inconsisted on throwing warnings/errors.
Fixed now.

val_int and result_as_longlong methods were added to the Item_func_str_to_date
class. 

mysql-test/r/func_time.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/parser.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/select.result:
  A test case result adjusted after fixing bug#56271.
mysql-test/r/strict.result:
  Test case result adjusted after fixing bug#56271.
mysql-test/r/type_datetime.result:
  Added a test case for the bug#56271.
mysql-test/t/strict.test:
  Test case adjusted after fixing bug#56271.
mysql-test/t/type_datetime.test:
  Added a test case for the bug#56271.
sql/item_timefunc.cc:
  Bug#56271: Wrong comparison result with STR_TO_DATE function
  val_int and result_as_longlong methods were added to the Item_func_str_to_date
  class. 
  Item_func_str_to_date::get_date now throws the ER_WRONG_VALUE_FOR_TYPE warning
  on incorrect value.
sql/item_timefunc.h:
  Bug#56271: Wrong comparison result with STR_TO_DATE function
  val_int and result_as_longlong methods were added to the Item_func_str_to_date
  class.
This commit is contained in:
Evgeny Potemkin 2010-09-07 10:45:00 +04:00
parent 99c7536c5c
commit e435df8e09
9 changed files with 124 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -1200,6 +1200,8 @@ set time_zone= @@global.time_zone;
select str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE
NULL
Warnings:
Warning 1411 Incorrect datetime value: '10:00 PM' for function str_to_date
create table t1 (field DATE);
insert into t1 values ('2006-11-06');
select * from t1 where field < '2006-11-06 04:08:36.0';

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

@ -556,9 +556,13 @@ DROP TABLE IF EXISTS t1;
SELECT STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE
NULL
Warnings:
Warning 1411 Incorrect datetime value: '10:00 PM' for function str_to_date
SELECT STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL (INTERVAL(1,2,3) + 1) MINUTE;
STR_TO_DATE('10:00 PM', '%h:%i %p') + INTERVAL (INTERVAL(1,2,3) + 1) MINUTE
NULL
Warnings:
Warning 1411 Incorrect datetime value: '10:00 PM' for function str_to_date
SELECT "1997-12-31 23:59:59" + INTERVAL 1 SECOND;
"1997-12-31 23:59:59" + INTERVAL 1 SECOND
1998-01-01 00:00:00

12
mysql-test/r/select.result
View File

@ -4171,9 +4171,10 @@ str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01 00:00:00'
set SQL_MODE=TRADITIONAL;
select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34';
str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34'
0
NULL
Warnings:
Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34'
Warning 1411 Incorrect datetime value: '2007-10-00 12:34' for function str_to_date
select str_to_date('2007-10-01 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34';
str_to_date('2007-10-01 12:34','%Y-%m-%d %H:%i') = '2007-10-00 12:34'
0
@ -4181,17 +4182,16 @@ Warnings:
Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34'
select str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-01 12:34';
str_to_date('2007-10-00 12:34','%Y-%m-%d %H:%i') = '2007-10-01 12:34'
0
NULL
Warnings:
Warning 1292 Truncated incorrect datetime value: '2007-10-00 12:34:00'
Warning 1411 Incorrect datetime value: '2007-10-00 12:34' for function str_to_date
select str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01'
and '2007/10/20';
str_to_date('2007-10-00','%Y-%m-%d') between '2007/09/01'
and '2007/10/20'
0
NULL
Warnings:
Warning 1292 Incorrect datetime value: '2007-10-00' for column '2007/09/01' at row 1
Warning 1292 Incorrect datetime value: '2007-10-00' for column '2007/10/20' at row 1
Warning 1411 Incorrect datetime value: '2007-10-00' for function str_to_date
set SQL_MODE=DEFAULT;
select str_to_date('2007-10-00','%Y-%m-%d') between '' and '2007/10/20';
str_to_date('2007-10-00','%Y-%m-%d') between '' and '2007/10/20'

27
mysql-test/r/strict.result
View File

@ -206,12 +206,11 @@ INSERT INTO t1 (col1) VALUES (STR_TO_DATE('15.10.2004','%d.%m.%Y'));
INSERT INTO t1 (col2) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
INSERT INTO t1 (col3) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
Warnings:
Note 1265 Data truncated for column 'col1' at row 1
ERROR HY000: Incorrect datetime value: '31.10.0000 15.30' for function str_to_date
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect date value: '2004-00-31 15:30:00' for column 'col1' at row 1
ERROR HY000: Incorrect datetime value: '31.0.2004 15.30' for function str_to_date
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect date value: '2004-10-00 15:30:00' for column 'col1' at row 1
ERROR HY000: Incorrect datetime value: '0.10.2004 15.30' for function str_to_date
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect date value: '2004-09-31 15:30:00' for column 'col1' at row 1
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
@ -221,12 +220,13 @@ ERROR 22007: Incorrect date value: '2003-02-29 15:30:00' for column 'col1' at ro
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
ERROR HY000: Incorrect datetime value: '15.13.2004 15.30' for function str_to_date
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
ERROR 22007: Incorrect date value: '0000-00-00' for column 'col1' at row 1
ERROR HY000: Incorrect datetime value: '00.00.0000' for function str_to_date
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
ERROR HY000: Incorrect datetime value: '31.10.0000 15.30' for function str_to_date
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-00-31 15:30:00' for column 'col2' at row 1
ERROR HY000: Incorrect datetime value: '31.0.2004 15.30' for function str_to_date
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col2' at row 1
ERROR HY000: Incorrect datetime value: '0.10.2004 15.30' for function str_to_date
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-09-31 15:30:00' for column 'col2' at row 1
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
@ -236,13 +236,13 @@ ERROR 22007: Incorrect datetime value: '2003-02-29 15:30:00' for column 'col2' a
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
ERROR HY000: Incorrect datetime value: '15.13.2004 15.30' for function str_to_date
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
ERROR 22007: Incorrect datetime value: '0000-00-00' for column 'col2' at row 1
ERROR HY000: Incorrect datetime value: '00.00.0000' for function str_to_date
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '0000-10-31 15:30:00' for column 'col3' at row 1
ERROR HY000: Incorrect datetime value: '31.10.0000 15.30' for function str_to_date
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-00-31 15:30:00' for column 'col3' at row 1
ERROR HY000: Incorrect datetime value: '31.0.2004 15.30' for function str_to_date
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col3' at row 1
ERROR HY000: Incorrect datetime value: '0.10.2004 15.30' for function str_to_date
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
ERROR 22007: Incorrect datetime value: '2004-09-31 15:30:00' for column 'col3' at row 1
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
@ -252,7 +252,7 @@ ERROR 22007: Incorrect datetime value: '2003-02-29 15:30:00' for column 'col3' a
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
ERROR HY000: Incorrect datetime value: '15.13.2004 15.30' for function str_to_date
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
ERROR 22007: Incorrect datetime value: '0000-00-00' for column 'col3' at row 1
ERROR HY000: Incorrect datetime value: '00.00.0000' for function str_to_date
drop table t1;
CREATE TABLE t1 (col1 date, col2 datetime, col3 timestamp);
INSERT INTO t1 (col1) VALUES (CAST('2004-10-15' AS DATE));
@ -1108,6 +1108,9 @@ Warnings:
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
Warning 1411 Incorrect datetime value: '2004.12.12 10:22:61' for function str_to_date
drop table t1;
create table t1 (col1 char(3), col2 integer);
insert into t1 (col1) values (cast(1000 as char(3)));

25
mysql-test/r/type_datetime.result
View File

@ -655,5 +655,30 @@ Note 1003 select `test`.`t1`.`Id` AS `Id`,`test`.`t1`.`AtTime` AS `AtTime` from
DROP TABLE t1;
SET NAMES latin1;
#
# Bug#56271: Wrong comparison result with STR_TO_DATE function
#
CREATE TABLE t1 (
`year` int(4) NOT NULL,
`month` int(2) NOT NULL
);
INSERT INTO t1 VALUES (2010,3),(2010,4),(2009,8),(2008,9);
SELECT *
FROM t1
WHERE STR_TO_DATE(CONCAT_WS('/01/',`month`,`year`), '%m/%d/%Y') >=
STR_TO_DATE('1/1/2010', '%m/%d/%Y');
year month
2010 3
2010 4
create table t2(f1 datetime primary key);
insert into t2 select STR_TO_DATE(CONCAT_WS('/01/',`month`,`year`), '%m/%d/%Y') from t1;
select * from t2 where f1=STR_TO_DATE('4/1/2010', '%m/%d/%Y');
f1
2010-04-01 00:00:00
t2 should be const
explain select * from t2 where f1=STR_TO_DATE('4/1/2010', '%m/%d/%Y');
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 8 const 1 Using index
DROP TABLE t1,t2;
#
# End of 5.5 tests
#

24
mysql-test/t/strict.test
View File

@ -192,11 +192,11 @@ INSERT INTO t1 (col3) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
# All test cases expected to fail should return
# SQLSTATE 22007 <invalid date value>
--error 1411
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
@ -206,18 +206,18 @@ INSERT INTO t1 (col1) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('29.02.2003 15.30','%d.%m.%Y %H.%i'));
--error 1411
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col1) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
## Test INSERT with STR_TO_DATE into DATETIME
# All test cases expected to fail should return
# SQLSTATE 22007 <invalid datetime value>
--error 1411
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
@ -227,18 +227,18 @@ INSERT INTO t1 (col2) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('29.02.2003 15.30','%d.%m.%Y %H.%i'));
--error 1411
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col2) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
## Test INSERT with STR_TO_DATE into TIMESTAMP
# All test cases expected to fail should return
# SQLSTATE 22007 <invalid datetime value>
--error 1292
--error 1411
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('31.9.2004 15.30','%d.%m.%Y %H.%i'));
@ -248,7 +248,7 @@ INSERT INTO t1 (col3) VALUES(STR_TO_DATE('32.10.2004 15.30','%d.%m.%Y %H.%i'));
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('29.02.2003 15.30','%d.%m.%Y %H.%i'));
--error 1411
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('15.13.2004 15.30','%d.%m.%Y %H.%i'));
--error 1292
--error 1411
INSERT INTO t1 (col3) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
drop table t1;

23
mysql-test/t/type_datetime.test
View File

@ -461,6 +461,29 @@ EXPLAIN EXTENDED SELECT * FROM t1 FORCE INDEX(attime) WHERE AtTime = '2010-02-22
DROP TABLE t1;
SET NAMES latin1;
--echo #
--echo # Bug#56271: Wrong comparison result with STR_TO_DATE function
--echo #
CREATE TABLE t1 (
`year` int(4) NOT NULL,
`month` int(2) NOT NULL
);
INSERT INTO t1 VALUES (2010,3),(2010,4),(2009,8),(2008,9);
SELECT *
FROM t1
WHERE STR_TO_DATE(CONCAT_WS('/01/',`month`,`year`), '%m/%d/%Y') >=
STR_TO_DATE('1/1/2010', '%m/%d/%Y');
create table t2(f1 datetime primary key);
insert into t2 select STR_TO_DATE(CONCAT_WS('/01/',`month`,`year`), '%m/%d/%Y') from t1;
select * from t2 where f1=STR_TO_DATE('4/1/2010', '%m/%d/%Y');
--echo t2 should be const
explain select * from t2 where f1=STR_TO_DATE('4/1/2010', '%m/%d/%Y');
DROP TABLE t1,t2;
--echo #
--echo # End of 5.5 tests
--echo #

35
sql/item_timefunc.cc
View File

@ -3368,6 +3368,8 @@ void Item_func_str_to_date::fix_length_and_dec()
cached_field_type= MYSQL_TYPE_DATETIME;
max_length= MAX_DATETIME_FULL_WIDTH*MY_CHARSET_BIN_MB_MAXLEN;
cached_timestamp_type= MYSQL_TIMESTAMP_NONE;
sql_mode= (current_thd->variables.sql_mode &
(MODE_NO_ZERO_IN_DATE | MODE_NO_ZERO_DATE));
if ((const_item= args[1]->const_item()))
{
char format_buff[64];
@ -3433,6 +3435,14 @@ bool Item_func_str_to_date::get_date(MYSQL_TIME *ltime, uint fuzzy_date)
return 0;
null_date:
if (fuzzy_date & TIME_NO_ZERO_DATE)
{
char buff[128];
strmake(buff, val->ptr(), min(val->length(), sizeof(buff)-1));
push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN,
ER_WRONG_VALUE_FOR_TYPE, ER(ER_WRONG_VALUE_FOR_TYPE),
"datetime", buff, "str_to_date");
}
return (null_value=1);
}
@ -3442,7 +3452,7 @@ String *Item_func_str_to_date::val_str(String *str)
DBUG_ASSERT(fixed == 1);
MYSQL_TIME ltime;
if (Item_func_str_to_date::get_date(&ltime, TIME_FUZZY_DATE))
if (Item_func_str_to_date::get_date(&ltime, TIME_FUZZY_DATE | sql_mode))
return 0;
if (!make_datetime((const_item ? cached_format_type :
@ -3453,6 +3463,29 @@ String *Item_func_str_to_date::val_str(String *str)
}
longlong Item_func_str_to_date::val_int()
{
DBUG_ASSERT(fixed == 1);
MYSQL_TIME ltime;
if (Item_func_str_to_date::get_date(&ltime, TIME_FUZZY_DATE | sql_mode))
return 0;
if (const_item)
{
switch (cached_field_type) {
case MYSQL_TYPE_DATE:
return TIME_to_ulonglong_date(&ltime);
case MYSQL_TYPE_TIME:
return TIME_to_ulonglong_time(&ltime);
default:
return TIME_to_ulonglong_datetime(&ltime);
}
}
return TIME_to_ulonglong_datetime(&ltime);
}
bool Item_func_last_day::get_date(MYSQL_TIME *ltime, uint fuzzy_date)
{
if (get_arg0_date(ltime, fuzzy_date & ~TIME_FUZZY_DATE) ||

3
sql/item_timefunc.h
View File

@ -1039,6 +1039,7 @@ class Item_func_str_to_date :public Item_str_func
date_time_format_types cached_format_type;
timestamp_type cached_timestamp_type;
bool const_item;
ulonglong sql_mode;
public:
Item_func_str_to_date(Item *a, Item *b)
:Item_str_func(a, b), const_item(false)
@ -1052,6 +1053,8 @@ public:
{
return tmp_table_field_from_field_type(table, 1);
}
longlong val_int();
bool result_as_longlong() { return TRUE; }
};