将一张表中的数据插入另外一张表
1、两张表结构相同
insert into 表1名称
select * from 表2名称
2、两张结构不相同的表
insert into 表1名称(列名1,列名2,列名3···)
select 列1,列2,列3 ··· from 表2名称
3、从另一张表获取某几个字段插入另一张表
insert into 表1名称(列名1,列名2,列名3···)values(数据1,数据2,(select 列名3 from 表2名称 ))
三张结构相同的表查询一条记录
SELECT
t.*
FROM
(
SELECT
*
FROM
Service_.UserAccount_1
UNION
SELECT
*
FROM
Service_.UserAccount_2
UNION
SELECT
*
FROM
Service_.UserAccount_3
) t
WHERE
t.userId IN (1146190515, 1167527419, 3554447);
SELECT
t.*
FROM
(
SELECT
*
FROM
Service_.UserAccount_1
WHERE
userId IN (11641901, 11647279, 34547)
UNION
SELECT
*
FROM
Service.UserAccount_2
WHERE
userId IN (11690415, 11642719, 34447)
UNION
SELECT
*
FROM
Service.UserAccount_3
WHERE
userId IN (1519015, 10637719, 35447)
) t;