摘要: create table temp1(name varchar(50)) alter table temp1 add column name1 varchar(50) as (name) virtual, add column name2 varchar(50) as (name) stored, 阅读全文
posted @ 2022-02-09 14:06 赵钱富贵 阅读(463) 评论(0) 推荐(0) 编辑