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1
by brian
clean slate |
1 |
drop table if exists t1;
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select {fn length("hello")}, { date "1997-10-20" };
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3 |
{fn length("hello")} 1997-10-20
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5 1997-10-20
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create table t1 (a int not null auto_increment,b int not null,primary key (a,b));
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insert into t1 SET A=NULL,B=1;
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insert into t1 SET a=null,b=2;
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select * from t1 where a is null and b=2;
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9 |
a b
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10 |
2 2
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11 |
select * from t1 where a is null;
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12 |
a b
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13 |
explain select * from t1 where b is null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
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16 |
drop table t1;
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CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY);
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18 |
INSERT INTO t1 VALUES (NULL);
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685.4.14
by Jay Pipes
Fixes odbc.test. We don't support the SQL_NO_CACHE keyword |
19 |
SELECT a, last_insert_id() FROM t1 WHERE a IS NULL;
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1
by brian
clean slate |
20 |
a last_insert_id()
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21 |
1 1
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685.4.14
by Jay Pipes
Fixes odbc.test. We don't support the SQL_NO_CACHE keyword |
22 |
SELECT a, last_insert_id() FROM t1 WHERE a IS NULL;
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1
by brian
clean slate |
23 |
a last_insert_id()
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685.4.14
by Jay Pipes
Fixes odbc.test. We don't support the SQL_NO_CACHE keyword |
24 |
SELECT a, last_insert_id() FROM t1;
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1
by brian
clean slate |
25 |
a last_insert_id()
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26 |
1 1
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27 |
DROP TABLE t1;
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