怎么增加 auto_increment
test?>create?table?users( ??->?id?smallint?unsigned?primary?key, ?->?username?varchar(20)?not?null,? ?->?age?tinyint?unsigned?not?null?default?10, ?->?sex?boolean); ? ?忘記添加AUTO_INCREMENT自動編號,怎么添加進去
test?>create?table?users( ??->?id?smallint?unsigned?primary?key, ?->?username?varchar(20)?not?null,? ?->?age?tinyint?unsigned?not?null?default?10, ?->?sex?boolean); ? ?忘記添加AUTO_INCREMENT自動編號,怎么添加進去
2018-03-20
舉報
2018-03-20
alter table users change id smallint unsigned auto_increment;
2018-06-14
alter table user change id smallint primary key auto_increment;
2018-03-20