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# # Testing of constraints # Currently MySQL only ignores the syntax. # --disable_warnings drop table if exists t1; --enable_warnings create table t1 (a int check (a>0)); insert into t1 values (1); insert into t1 values (0); drop table t1; create table t1 (a int ,b int, check a>b); insert into t1 values (1,0); insert into t1 values (0,1); drop table t1; create table t1 (a int ,b int, constraint abc check (a>b)); insert into t1 values (1,0); insert into t1 values (0,1); drop table t1; create table t1 (a int null); insert into t1 values (1),(NULL); drop table t1; create table t1 (a int null); alter table t1 add constraint constraint_1 unique (a); alter table t1 add constraint unique key_1(a); alter table t1 add constraint constraint_2 unique key_2(a); show create table t1; drop table t1; # End of 4.1 tests