drop table if exists t1, t2;
select null,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
NULL	isnull(null)	isnull(1/0)	isnull(1/0 = null)	ifnull(null,1)	ifnull(null,"TRUE")	ifnull("TRUE","ERROR")	1/0 is null	1 is not null
NULL	1	1	1	1	TRUE	TRUE	1	1
Warnings:
Warning	1365	Division by 0
Warning	1365	Division by 0
Warning	1365	Division by 0
explain select null,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Warning	1365	Division by 0
Warning	1365	Division by 0
Warning	1365	Division by 0
Note	1003	/* select#1 */ select NULL AS `NULL`,(NULL is null) AS `isnull(null)`,((1 / 0) is null) AS `isnull(1/0)`,(((1 / 0) = NULL) is null) AS `isnull(1/0 = null)`,ifnull(NULL,1) AS `ifnull(null,1)`,ifnull(NULL,'TRUE') AS `ifnull(null,"TRUE")`,ifnull('TRUE','ERROR') AS `ifnull("TRUE","ERROR")`,((1 / 0) is null) AS `1/0 is null`,(1 is not null) AS `1 is not null`
select 1 | NULL,1 & NULL,1+NULL,1-NULL;
1 | NULL	1 & NULL	1+NULL	1-NULL
NULL	NULL	NULL	NULL
select NULL=NULL,NULL<>NULL,IFNULL(NULL,1.1)+0,IFNULL(NULL,1) | 0;
NULL=NULL	NULL<>NULL	IFNULL(NULL,1.1)+0	IFNULL(NULL,1) | 0
NULL	NULL	1.1	1
select strcmp("a",NULL),(1<NULL)+0.0,NULL regexp "a",null like "a%","a%" like null;
strcmp("a",NULL)	(1<NULL)+0.0	NULL regexp "a"	null like "a%"	"a%" like null
NULL	NULL	NULL	NULL	NULL
select concat("a",NULL),replace(NULL,"a","b"),replace("string","i",NULL),replace("string",NULL,"i"),insert("abc",1,1,NULL),left(NULL,1);
concat("a",NULL)	replace(NULL,"a","b")	replace("string","i",NULL)	replace("string",NULL,"i")	insert("abc",1,1,NULL)	left(NULL,1)
NULL	NULL	NULL	NULL	NULL	NULL
select repeat("a",0),repeat("ab",5+5),repeat("ab",-1),reverse(NULL);
repeat("a",0)	repeat("ab",5+5)	repeat("ab",-1)	reverse(NULL)
	abababababababababab		NULL
select field(NULL,"a","b","c");
field(NULL,"a","b","c")
0
select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
2 between null and 1	2 between 3 AND NULL	NULL between 1 and 2	2 between NULL and 3	2 between 1 AND null
0	0	NULL	NULL	NULL
explain select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	/* select#1 */ select (2 between NULL and 1) AS `2 between null and 1`,(2 between 3 and NULL) AS `2 between 3 AND NULL`,(NULL between 1 and 2) AS `NULL between 1 and 2`,(2 between NULL and 3) AS `2 between NULL and 3`,(2 between 1 and NULL) AS `2 between 1 AND null`
SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
NULL AND NULL	1 AND NULL	NULL AND 1	NULL OR NULL	0 OR NULL	NULL OR 0
NULL	NULL	NULL	NULL	NULL	NULL
SELECT (NULL OR NULL) IS NULL;
(NULL OR NULL) IS NULL
1
select NULL AND 0, 0 and NULL;
NULL AND 0	0 and NULL
0	0
select inet_ntoa(null),inet_aton(null);
inet_ntoa(null)	inet_aton(null)
NULL	NULL
explain select inet_ntoa(null),inet_aton(null);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	/* select#1 */ select inet_ntoa(NULL) AS `inet_ntoa(null)`,inet_aton(NULL) AS `inet_aton(null)`
select inet6_ntoa(null),inet6_aton(null);
inet6_ntoa(null)	inet6_aton(null)
NULL	NULL
explain select inet6_ntoa(null), inet6_aton(null);
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
Warnings:
Note	1003	/* select#1 */ select inet6_ntoa(NULL) AS `inet6_ntoa(null)`,inet6_aton(NULL) AS `inet6_aton(null)`
create table t1 (x int);
insert into t1 values (null);
select * from t1 where x != 0;
x
drop table t1;
CREATE TABLE t1 (
indexed_field int default NULL,
KEY indexed_field (indexed_field)
);
INSERT INTO t1 VALUES (NULL),(NULL);
SELECT * FROM t1 WHERE indexed_field=NULL;
indexed_field
SELECT * FROM t1 WHERE indexed_field IS NULL;
indexed_field
NULL
NULL
SELECT * FROM t1 WHERE indexed_field<=>NULL;
indexed_field
NULL
NULL
DROP TABLE t1;
create table t1 (a int, b int);
insert into t1 values(20,null);
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a;
b	ifnull(t2.b,"this is null")
NULL	this is null
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a order by 1;
b	ifnull(t2.b,"this is null")
NULL	this is null
insert into t1 values(10,null);
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
t2.b=t3.a order by 1;
b	ifnull(t2.b,"this is null")
NULL	this is null
NULL	this is null
drop table t1;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
CREATE TABLE t1 (a varchar(16) NOT NULL default '', b smallint(6) NOT NULL default 0, c datetime NOT NULL default '0000-00-00 00:00:00', d smallint(6) NOT NULL default 0);
Warnings:
Warning	1681	Integer display width is deprecated and will be removed in a future release.
Warning	1681	Integer display width is deprecated and will be removed in a future release.
INSERT INTO t1 SET a = "", d= "2003-01-14 03:54:55";
Warnings:
Warning	1265	Data truncated for column 'd' at row 1
UPDATE t1 SET d=1/NULL;
Warnings:
Warning	1048	Column 'd' cannot be null
UPDATE t1 SET d=NULL;
Warnings:
Warning	1048	Column 'd' cannot be null
INSERT INTO t1 (a) values (null);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1 (a) values (1/null);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1 (a) values (null),(null);
Warnings:
Warning	1048	Column 'a' cannot be null
INSERT INTO t1 (b) values (null);
ERROR 23000: Column 'b' cannot be null
INSERT INTO t1 (b) values (1/null);
ERROR 23000: Column 'b' cannot be null
INSERT INTO t1 (b) values (null),(null);
Warnings:
Warning	1048	Column 'b' cannot be null
INSERT INTO t1 (c) values (null);
ERROR 23000: Column 'c' cannot be null
INSERT INTO t1 (c) values (1/null);
ERROR 23000: Column 'c' cannot be null
INSERT INTO t1 (c) values (null),(null);
Warnings:
Warning	1048	Column 'c' cannot be null
INSERT INTO t1 (d) values (null);
ERROR 23000: Column 'd' cannot be null
INSERT INTO t1 (d) values (1/null);
ERROR 23000: Column 'd' cannot be null
INSERT INTO t1 (d) values (null),(null);
Warnings:
Warning	1048	Column 'd' cannot be null
select * from t1;
a	b	c	d
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
	0	0000-00-00 00:00:00	0
drop table t1;
SET sql_mode = default;
create table t1 (a int not null, b int not null, index idx(a));
insert into t1 values
(1,1), (2,2), (3,3), (4,4), (5,5), (6,6),
(7,7), (8,8), (9,9), (10,10), (11,11), (12,12);
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
explain select * from t1 where a between 2 and 3;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	NULL	range	idx	idx	4	NULL	1	100.00	Using index condition
Warnings:
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` between 2 and 3)
explain select * from t1 where a between 2 and 3 or b is null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	NULL	range	idx	idx	4	NULL	1	100.00	Using index condition
Warnings:
Note	1003	/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` between 2 and 3)
drop table t1;
select cast(NULL as signed);
cast(NULL as signed)
NULL
create table t1(i int, key(i));
insert into t1 values(1);
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 select i*2 from t1;
insert into t1 values(null);
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
explain select * from t1 where i=2 or i is null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	NULL	ref_or_null	i	i	5	const	2	100.00	Using where; Using index
Warnings:
Note	1003	/* select#1 */ select `test`.`t1`.`i` AS `i` from `test`.`t1` where ((`test`.`t1`.`i` = 2) or (`test`.`t1`.`i` is null))
select count(*) from t1 where i=2 or i is null;
count(*)
10
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
alter table t1 change i i int not null;
Warnings:
Warning	1265	Data truncated for column 'i' at row 513
SET sql_mode = default;
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
explain select * from t1 where i=2 or i is null;
id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	t1	NULL	ref	i	i	4	const	1	100.00	Using index
Warnings:
Note	1003	/* select#1 */ select `test`.`t1`.`i` AS `i` from `test`.`t1` where (`test`.`t1`.`i` = 2)
select count(*) from t1 where i=2 or i is null;
count(*)
9
drop table t1;
set names latin2;
create table t1 select
null as c00,
if(1, null, 'string') as c01,
if(0, null, 'string') as c02,
ifnull(null, 'string') as c03,
ifnull('string', null) as c04,
case when 0 then null else 'string' end as c05,
case when 1 then null else 'string' end as c06,
coalesce(null, 'string') as c07,
coalesce('string', null) as c08,
least('string',null) as c09,
least(null, 'string') as c10,
greatest('string',null) as c11,
greatest(null, 'string') as c12,
nullif('string', null) as c13,
nullif(null, 'string') as c14,
trim('string' from null) as c15,
trim(null from 'string') as c16,
substring_index('string', null, 1) as c17,
substring_index(null, 'string', 1) as c18,
elt(1, null, 'string') as c19,
elt(1, 'string', null) as c20,
concat('string', null) as c21,
concat(null, 'string') as c22,
concat_ws('sep', 'string', null) as c23,
concat_ws('sep', null, 'string') as c24,
concat_ws(null, 'string', 'string') as c25,
make_set(3, 'string', null) as c26,
make_set(3, null, 'string') as c27,
export_set(3, null, 'off', 'sep') as c29,
export_set(3, 'on', null, 'sep') as c30,
export_set(3, 'on', 'off', null) as c31,
replace(null, 'from', 'to') as c32,
replace('str', null, 'to') as c33,
replace('str', 'from', null) as c34,
insert('str', 1, 2, null) as c35,
insert(null, 1, 2, 'str') as c36,
lpad('str', 10, null) as c37,
rpad(null, 10, 'str') as c38;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c00` binary(0) DEFAULT NULL,
  `c01` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c02` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c03` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
  `c04` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
  `c05` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c06` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c07` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
  `c08` varchar(6) CHARACTER SET latin2 NOT NULL DEFAULT '',
  `c09` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c10` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c11` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c12` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c13` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c14` char(0) CHARACTER SET latin2 DEFAULT NULL,
  `c15` char(0) CHARACTER SET latin2 DEFAULT NULL,
  `c16` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c17` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c18` char(0) CHARACTER SET latin2 DEFAULT NULL,
  `c19` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c20` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c21` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c22` varchar(6) CHARACTER SET latin2 DEFAULT NULL,
  `c23` varchar(9) CHARACTER SET latin2 DEFAULT NULL,
  `c24` varchar(9) CHARACTER SET latin2 DEFAULT NULL,
  `c25` varchar(12) CHARACTER SET latin2 DEFAULT NULL,
  `c26` varchar(7) CHARACTER SET latin2 DEFAULT NULL,
  `c27` varchar(7) CHARACTER SET latin2 DEFAULT NULL,
  `c29` varchar(381) CHARACTER SET latin2 DEFAULT NULL,
  `c30` varchar(317) CHARACTER SET latin2 DEFAULT NULL,
  `c31` varchar(192) CHARACTER SET latin2 DEFAULT NULL,
  `c32` char(0) CHARACTER SET latin2 DEFAULT NULL,
  `c33` varchar(3) CHARACTER SET latin2 DEFAULT NULL,
  `c34` varchar(3) CHARACTER SET latin2 DEFAULT NULL,
  `c35` varchar(3) CHARACTER SET latin2 DEFAULT NULL,
  `c36` varchar(3) CHARACTER SET latin2 DEFAULT NULL,
  `c37` varchar(10) CHARACTER SET latin2 DEFAULT NULL,
  `c38` varchar(10) CHARACTER SET latin2 DEFAULT NULL
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table t1;
select 
case 'str' when 'STR' then 'str' when null then 'null' end as c01,
case 'str' when null then 'null' when 'STR' then 'str' end as c02,
field(null, 'str1', 'str2') as c03,
field('str1','STR1', null) as c04,
field('str1', null, 'STR1') as c05,
'string' in ('STRING', null) as c08,
'string' in (null, 'STRING') as c09;
c01	c02	c03	c04	c05	c08	c09
str	str	0	1	2	1	1
set names latin1;
create table bug19145a (e enum('a','b','c')          default 'b' , s set('x', 'y', 'z')          default 'y' );
create table bug19145b (e enum('a','b','c')          default null, s set('x', 'y', 'z')          default null);
create table bug19145c (e enum('a','b','c') not null default 'b' , s set('x', 'y', 'z') not null default 'y' );
create table bug19145setnotnulldefaultnull (e enum('a','b','c')          default null, s set('x', 'y', 'z') not null default null);
ERROR 42000: Invalid default value for 's'
create table bug19145enumnotnulldefaultnull (e enum('a','b','c') not null default null, s set('x', 'y', 'z')          default null);
ERROR 42000: Invalid default value for 'e'
alter table bug19145a alter column e set default null;
alter table bug19145a alter column s set default null;
alter table bug19145a add column (i int);
alter table bug19145b alter column e set default null;
alter table bug19145b alter column s set default null;
alter table bug19145b add column (i int);
alter table bug19145c alter column e set default null;
ERROR 42000: Invalid default value for 'e'
alter table bug19145c alter column s set default null;
ERROR 42000: Invalid default value for 's'
alter table bug19145c add column (i int);
show create table bug19145a;
Table	Create Table
bug19145a	CREATE TABLE `bug19145a` (
  `e` enum('a','b','c') COLLATE utf8mb4_general_ci DEFAULT NULL,
  `s` set('x','y','z') COLLATE utf8mb4_general_ci DEFAULT NULL,
  `i` int(11) DEFAULT NULL
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
show create table bug19145b;
Table	Create Table
bug19145b	CREATE TABLE `bug19145b` (
  `e` enum('a','b','c') COLLATE utf8mb4_general_ci DEFAULT NULL,
  `s` set('x','y','z') COLLATE utf8mb4_general_ci DEFAULT NULL,
  `i` int(11) DEFAULT NULL
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
show create table bug19145c;
Table	Create Table
bug19145c	CREATE TABLE `bug19145c` (
  `e` enum('a','b','c') COLLATE utf8mb4_general_ci NOT NULL DEFAULT 'b',
  `s` set('x','y','z') COLLATE utf8mb4_general_ci NOT NULL DEFAULT 'y',
  `i` int(11) DEFAULT NULL
) ENGINE=XENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
drop table bug19145a;
drop table bug19145b;
drop table bug19145c;
# End of 4.1 tests
#
# Bug #31471: decimal_bin_size: Assertion `scale >= 0 &&
#             precision > 0 && scale <= precision'
#
CREATE TABLE t1 (a DECIMAL (1, 0) ZEROFILL, b DECIMAL (1, 0) ZEROFILL);
Warnings:
Warning	1681	The ZEROFILL attribute is deprecated and will be removed in a future release. Use the LPAD function to zero-pad numbers, or store the formatted numbers in a CHAR column.
Warning	1681	The ZEROFILL attribute is deprecated and will be removed in a future release. Use the LPAD function to zero-pad numbers, or store the formatted numbers in a CHAR column.
INSERT INTO t1 (a, b) VALUES (0, 0);
CREATE TABLE t2 SELECT IFNULL(a, b) FROM t1;
Warnings:
Warning	1681	UNSIGNED for decimal and floating point data types is deprecated and support for it will be removed in a future release.
DESCRIBE t2;
Field	Type	Null	Key	Default	Extra
IFNULL(a, b)	decimal(1,0) unsigned	YES		NULL	
DROP TABLE t2;
CREATE TABLE t2 SELECT IFNULL(a, NULL) FROM t1;
Warnings:
Warning	1681	UNSIGNED for decimal and floating point data types is deprecated and support for it will be removed in a future release.
DESCRIBE t2;
Field	Type	Null	Key	Default	Extra
IFNULL(a, NULL)	decimal(1,0) unsigned	YES		NULL	
DROP TABLE t2;
CREATE TABLE t2 SELECT IFNULL(NULL, b) FROM t1;
Warnings:
Warning	1681	UNSIGNED for decimal and floating point data types is deprecated and support for it will be removed in a future release.
DESCRIBE t2;
Field	Type	Null	Key	Default	Extra
IFNULL(NULL, b)	decimal(1,0) unsigned	YES		NULL	
DROP TABLE t1, t2;
# End of 5.0 tests
#
# WL#7247: Removal of \N
#
SELECT \N;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\N' at line 1