mysql创建计算列

 

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)

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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)

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