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1
by brian
clean slate |
1 |
drop table if exists t1; |
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create table t1 (a int check (a>0)); |
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insert into t1 values (1); |
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insert into t1 values (0); |
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drop table t1; |
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create table t1 (a int ,b int, check a>b); |
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insert into t1 values (1,0); |
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insert into t1 values (0,1); |
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drop table t1; |
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create table t1 (a int ,b int, constraint abc check (a>b)); |
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insert into t1 values (1,0); |
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insert into t1 values (0,1); |
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drop table t1; |
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create table t1 (a int null); |
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insert into t1 values (1),(NULL); |
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drop table t1; |
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create table t1 (a int null); |
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alter table t1 add constraint constraint_1 unique (a); |
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alter table t1 add constraint unique key_1(a); |
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alter table t1 add constraint constraint_2 unique key_2(a); |
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show create table t1; |
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Table Create Table |
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t1 CREATE TABLE "t1" ( |
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"a" int(11), |
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UNIQUE KEY "constraint_1" ("a"), |
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UNIQUE KEY "key_1" ("a"), |
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UNIQUE KEY "key_2" ("a") |
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) ENGINE=MyISAM DEFAULT CHARSET=latin1 |
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29 |
drop table t1; |