Question

WITH list_dedup (Company, duplicate_count) AS
(
     SELECT
         *,
         ROW_NUMBER() OVER (PARTITION BY Company ORDER BY Email) AS 'RowNumber'
     FROM
         Travels
)

错误：

Msg 102，Level 15，State 1，Line 7
'）'附近的语法不正确。

Answer 1

您缺少公用表表达式的最终选择（在 CTE定义之后）：

WITH list_dedup  (Company,duplicate_count) As
(
  select *,
         ROW_NUMBER() OVER (PARTITION BY Company ORDER by Email) As "RowNumber"
  From Travels
)
select *  
from list_dedup;

但这不会因为CTE被定义为两个列（通过WITH list_dedup (Company,duplicate_count)），但您在CTE内的选择返回至少三列（公司，电子邮件，rownumber）。您需要调整CTE的列定义，或将其完全保留：

WITH list_dedup As
(
  select *,
         ROW_NUMBER() OVER (PARTITION BY Company ORDER by Email) As "RowNumber"
  From Travels
)
select *  
from list_dedup;

当定义列列表时，内部选择中的As "RowNumber"也没有意义，因为CTE定义定义了列名。在内部使用 CTE的任何别名都不会在其外部可见（如果在with .. (...) as部分中指定了CTE列）。

Answer 2

您只是设置您的CTE - 现在您需要使用它！

WITH list_dedup (Company, duplicate_count) AS
(
     SELECT
         *,
         ROW_NUMBER() OVER (PARTITION BY Company ORDER BY Email) AS 'RowNumber'
     FROM
         Travels
)
SELECT *
FROM list_dedup

Answer 3

; WITH list_dedup（Company，duplicate_count）AS （选择 * ROW_NUMBER（）OVER（公司按电子邮件分类）AS'RowNumber' 从游记）

SELECT * FROM list_dedup

使用公用表表达式时“语法不正确”

3 个答案: