File: key_primary.result

package info (click to toggle)
mysql-dfsg-4.1 4.1.11a-4sarge8
  • links: PTS
  • area: main
  • in suites: sarge
  • size: 86,724 kB
  • ctags: 78,396
  • sloc: ansic: 380,120; cpp: 348,266; sh: 32,501; tcl: 30,484; perl: 20,873; yacc: 5,447; java: 4,610; makefile: 4,406; xml: 3,857; pascal: 1,795; awk: 1,338; asm: 1,064; sed: 772; sql: 503
file content (20 lines) | stat: -rw-r--r-- 666 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
drop table if exists t1;
create table t1 (t1 char(3) primary key);
insert into t1 values("ABC");
insert into t1 values("ABA");
insert into t1 values("AB%");
select * from t1 where t1="ABC";
t1
ABC
select * from t1 where t1="ABCD";
t1
select * from t1 where t1 like "a_\%";
t1
AB%
describe select * from t1 where t1="ABC";
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	const	PRIMARY	PRIMARY	3	const	1	Using index
describe select * from t1 where t1="ABCD";
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
drop table t1;