mysql创建计算列
2018-10-08 本文已影响0人
次序
mysql> create table t(id int auto_increment not null,c1 int,c2 int,c3 int as (c1+c2),primary key(id));
Query OK, 0 rows affected (0.41 sec)
mysql> create table t(id int auto_increment not null,c1 int,c2 int,c3 int as (c1+c2),primary key(id));
Query OK, 0 rows affected (0.41 sec)