Question

是否可以通过单个查询输出多个表？下面的代码不正确，只是为了显示主要思想：

create table A, B, C AS
(select * from main_table where x = 5) AS A
(select * from main_table where x = 8) AS B
(select * from main_table where x = 2) AS C

Answer 1

如果您的意思是单个SQL语句，则不会。您肯定可以在一个脚本中一个接一个地执行此操作，该脚本可以运行一遍。

Answer 2

正如@gordon在评论中建议的那样，您可以在一个脚本中完成所有操作：

CREATE TABLE a AS (SELECT * FROM main_table WHERE x = 5);
CREATE TABLE b AS (SELECT * FROM main_table WHERE x = 8);
CREATE TABLE c AS (SELECT * FROM main_table WHERE x = 2);

在单个查询中创建多个表

2 个答案: