Question

我在查询中定义了多个别名，我想将每个别名的结果写入表tab_1。但是，当我运行以下查询时，我收到错误

在＆INSTS＆＃39; INSERT＆＃39;靠近＆＃39; tab_1＆＃39;

我写得正确吗？有人可以验证语法还是告诉我如何编写它？请确认我已将逗号放在正确的位置。感谢您的帮助。

func_1 as
( .....),

func_2 as
(.....),

func_3 as
(....),


INSERT INTO TABLE tab_1 select * from func_1,

INSERT INTO TABLE tab_1 select * from func_2,

INSERT INTO TABLE tab_1 select * from func_3;

Answer 1

使用此模板：

with  
func_1 as ( .....),
func_2 as (.....),
func_3 as (....)
INSERT INTO TABLE tab_1 
select * from func_1
   union all  
select * from func_2  
   union all 
select * from func_3;

union all中的子查询将并行执行。

检查了这句话的解释计划，似乎工作正常：

with func_1 as
( select * from default.dual),
func_2 as
(select * from default.dual)
insert into table default.dual
select * from func_1
union all 
select * from func_2

从多个表插入单个表

1 个答案: