drop table if exists notnulltest1; drop table if exists notnulltest2; drop table if exists notnulltest3; drop table if exists notnulltest4; drop table if exists notnulltest5; drop table if exists notnulltest6; Create table notnulltest1 ( col1 int not null, col2 smallint not null default 12, c3 varchar(25) default null )engine=Infinidb; create table notnulltest2 (col_1 date not null default '0000-00-00') engine=InfiniDB; create table notnulltest2 (col_1 date not null default '2012-05-00') engine=InfiniDB; create table notnulltest2 (col_1 date not null default '2012-05-14') engine=InfiniDB; create table notnulltest3 (col_1 varchar(80) not null default 'this is a test') engine=InfiniDB; create table notnulltest4 (col_1 varchar(80) not null) engine=InfiniDB; create table notnulltest5 (col_1 bigint) engine=InfiniDB; alter table notnulltest5 change column col_1 col_1 bigint not null; create table notnulltest6 (col_1 bigint) engine=InfiniDB; insert into notnulltest6 values (1),(2),(3); select * from notnulltest6; alter table notnulltest6 add column (col_2 bigint); select * from notnulltest6; update notnulltest6 set col_2=100; select * from notnulltest6; alter table notnulltest6 change column col_2 col_2 bigint not null; select * from notnulltest6; insert into notnulltest1 value (null, default(col2), null); insert into notnulltest1 value (1, default(col2), null); insert into notnulltest1 value (1, null, null); select * from notnulltest1; update notnulltest1 set col1=null; select * from notnulltest1; update notnulltest1 set col1=''; select * from notnulltest1; update notnulltest1 set col2=null; select * from notnulltest1; update notnulltest1 set col2=''; select * from notnulltest1; update notnulltest1 set c3='a strings column'; select * from notnulltest1; update notnulltest1 set c3=null; select * from notnulltest1; alter table notnulltest1 alter col1 set default 20; alter table notnulltest1 alter col2 drop default; update notnulltest1 set col1=null; select * from notnulltest1; update notnulltest1 set col1=''; select * from notnulltest1; update notnulltest1 set col2=null; select * from notnulltest1; update notnulltest1 set col2=''; select * from notnulltest1; insert into notnulltest1 values (null, 10, 'a comment'), (20, 10, 'a comment'); insert into notnulltest1 values (default(col1), 10, 'a comment'), (20, 10, 'a comment'); insert into notnulltest2 values ('0000-00-00'); select * from notnulltest2; alter table notnulltest2 alter col_1 drop default; drop table notnulltest1; drop table notnulltest2; drop table notnulltest3; drop table notnulltest4; drop table notnulltest5; drop table notnulltest6;