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如何在单个SELECT语句中包含多个常用表表达式?

common-table-expression tsql sql-server-2008 sql-server sql

101

Paul Rowland · 技术社区 · 17 年前

宣布一个cte效果很好。

WITH cte1 AS (
    SELECT * from cdr.Location
    )

select * from cte1

(这个sql有错误)

WITH cte1 as (
    SELECT * from cdr.Location
)

WITH cte2 as (
    SELECT * from cdr.Location
)

select * from cte1    
union     
select * from cte2

Msg 156, Level 15, State 1, Line 7
Incorrect syntax near the keyword 'WITH'.
Msg 319, Level 15, State 1, Line 7
Incorrect syntax near the keyword 'with'. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement must be terminated with a semicolon.

NB。我已尝试输入分号,但出现了此错误

Msg 102, Level 15, State 1, Line 5
Incorrect syntax near ';'.
Msg 102, Level 15, State 1, Line 9
Incorrect syntax near ';'.

2 回复 | 直到 12 年前

149

Matt Fenwick sagarcool89 14 年前

WITH 
    cte1 as (SELECT * from cdr.Location),
    cte2 as (SELECT * from cdr.Location)
select * from cte1 union select * from cte2

基本上, WITH

Sagar Dev Timilsina 8 年前

WITH 
    cte1 as (SELECT * from cdr.Location),
    cte2 as (SELECT * from cdr.Location)
select * from cte1 union select * from cte2

WITH 
    cte1 as (SELECT * from cdr.Location),
    cte2 as (SELECT * from cte1 where val1 = val2)

select * from cte1 union select * from cte2

val1,val2 只是表达的借口。。

希望这个博客也能有所帮助: http://iamfixed.blogspot.de/2017/11/common-table-expression-in-sql-with.html

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