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drop table if exists t1,t2;
create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
insert into t1 values ('','',0,0.0);
select default(str), default(strnull), default(intg), default(rel) from t1;
default(str) default(strnull) default(intg) default(rel)
def NULL 10 3.14
explain extended select default(str), default(strnull), default(intg), default(rel) from t1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select default(`test`.`t1`.`str`) AS `default(str)`,default(`test`.`t1`.`strnull`) AS `default(strnull)`,default(`test`.`t1`.`intg`) AS `default(intg)`,default(`test`.`t1`.`rel`) AS `default(rel)` from dual
select * from t1 where str <> default(str);
str strnull intg rel
0 0
explain select * from t1 where str <> default(str);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
create view v1 as select default(str), default(strnull), default(intg), default(rel) from t1;
select * from v1;
default(str) default(strnull) default(intg) default(rel)
def NULL 10 3.14
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select default(`t1`.`str`) AS `default(str)`,default(`t1`.`strnull`) AS `default(strnull)`,default(`t1`.`intg`) AS `default(intg)`,default(`t1`.`rel`) AS `default(rel)` from `t1` latin1 latin1_swedish_ci
drop view v1;
drop table t1;
CREATE TABLE t1 (id int(11), s varchar(20));
INSERT INTO t1 VALUES (1, 'one'), (2, 'two'), (3, 'three');
SELECT s, 32 AS mi FROM t1 GROUP BY s HAVING DEFAULT(mi) IS NULL;
ERROR HY000: Field 'mi' doesn't have a default value
DROP TABLE t1;
#
# Start of 10.2 tests
#
set timestamp=unix_timestamp('2001-01-01 10:20:30.123456');
create table t1 (a int default 1, b int default (a+1),
c varchar(100) default 'foo', d text default 'bar',
e timestamp default now(), f timestamp(6) default now(2));
insert t1 () values ();
insert t1 (a) values (10);
select default(a),default(b),default(c),default(d),default(e),default(f) from t1;
default(a) default(b) default(c) default(d) default(e) default(f)
1 2 foo bar 2001-01-01 10:20:30 2001-01-01 10:20:30.120000
1 11 foo bar 2001-01-01 10:20:30 2001-01-01 10:20:30.120000
drop table t1;
#
# MDEV-21639 DEFAULT(col) evaluates to a bad value in WHERE clause
#
CREATE TABLE t1 (a BIGINT NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),10)));
INSERT INTO t1 VALUES (10000);
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = 10 AS ce
FROM t1;
a DEFAULT(a) c ce
10000 10 10 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END=10;
a
10000
DROP TABLE t1;
CREATE TABLE t1 (a DOUBLE NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),10)));
INSERT INTO t1 VALUES (10000);
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = 10 AS ce
FROM t1;
a DEFAULT(a) c ce
10000 10 10 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END=10;
a
10000
DROP TABLE t1;
CREATE TABLE t1 (a DECIMAL(10,0) NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),10)));
INSERT INTO t1 VALUES (10000);
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = 10 AS ce
FROM t1;
a DEFAULT(a) c ce
10000 10 10 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END=10;
a
10000
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(32) NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),10)));
INSERT INTO t1 VALUES (10000);
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = '10' AS ce
FROM t1;
a DEFAULT(a) c ce
10000 10 10 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END='10';
a
10000
DROP TABLE t1;
CREATE TABLE t1 (a DATE NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP()%10,DATE'2001-01-01')));
INSERT INTO t1 VALUES ('2000-01-01');
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = '2001-01-01' AS ce
FROM t1;
a DEFAULT(a) c ce
2000-01-01 2001-01-01 2001-01-01 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END='2001-01-01';
a
2000-01-01
DROP TABLE t1;
CREATE TABLE t1 (a TIME NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP()%10,TIME'10:20:30')));
INSERT INTO t1 VALUES ('10:00:00');
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = '10:20:30' AS ce
FROM t1;
a DEFAULT(a) c ce
10:00:00 10:20:30 10:20:30 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END='10:20:30';
a
10:00:00
DROP TABLE t1;
CREATE TABLE t1 (a DATETIME NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),TIMESTAMP'2001-01-01 10:20:30')));
INSERT INTO t1 VALUES ('2000-01-01 10:00:00');
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END = '2001-01-01 10:20:30' AS ce
FROM t1;
a DEFAULT(a) c ce
2000-01-01 10:00:00 2001-01-01 10:20:30 2001-01-01 10:20:30 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END='2001-01-01 10:20:30';
a
2000-01-01 10:00:00
DROP TABLE t1;
CREATE TABLE t1 (a INT NOT NULL DEFAULT (IF(false,UNIX_TIMESTAMP(),FALSE)));
INSERT INTO t1 VALUES (10);
SELECT
a,
DEFAULT(a),
CASE WHEN a THEN DEFAULT(a) END AS c,
CASE WHEN a THEN DEFAULT(a) END IS FALSE AS ce
FROM t1;
a DEFAULT(a) c ce
10 0 0 1
SELECT a FROM t1 WHERE CASE WHEN a THEN DEFAULT(a) END IS FALSE;
a
10
DROP TABLE t1;
#
# MDEV-21028 Server crashes in Query_arena::set_query_arena upon SELECT from view
#
create table t1 (a datetime default current_timestamp);
insert into t1 () values (),();
create algorithm=temptable view v1 as select * from t1;
create algorithm=merge view v2 as select * from t1;
select default(a) = now() from v1;
default(a) = now()
1
1
select default(a) = now() from v2;
default(a) = now()
1
1
drop view v1, v2;
drop table t1;
create table t1 (v1 timestamp not null default now() on update now()) select 'x';
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`v1` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
`x` varchar(1) CHARACTER SET latin1 COLLATE latin1_swedish_ci NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
select default(v1) from (select v1 from t1) dt;
default(v1)
2001-01-01 10:20:30
select default(v1) from (select v1 from t1 group by v1) dt;
default(v1)
2001-01-01 10:20:30
drop table t1;
create table t1 (a text default '');
create algorithm=temptable view v1 as select * from t1;
insert into t1 values ('a');
select default(a) from v1;
default(a)
drop view v1;
drop table t1;
#
# MDEV-28403 ASAN heap-use-after-free in String::copy / get_field_default_value
#
create table t (a blob default 'x');
create view v as select * from t;
insert into t () values ();
update t set a = default;
select table_name,column_name,column_default from information_schema.columns where table_name = 'v';
table_name v
column_name a
column_default 'x'
drop view v;
drop table t;
#
# End of 10.2 tests
#
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