在视图中将两个查询合并为单个查询

Question

我有一个包含union all查询的视图，并返回如下所示的结果：

CREATE VIEW [dbo].[MANU_TEST] 
AS
    SELECT DISTINCT
        PT.PRODUCT AS PRODUCT, PT.TEXT_CODE AS TEXT_CODE, 
        PHT.PHRASE AS F_PHRASE,PHT.LANGUAGE 
    FROM 
        PRODUCT_TEXT PT
    LEFT JOIN 
        PHRASE_LINK PHL ON PT.TEXT_CODE = PHL.TEXT_CODE
    INNER JOIN 
        PHRASE_TRANSLATIONS PHT ON PHL.PHRASE_ID = PHT.PHRASE_ID
    WHERE 
        PT.DATA_CODE = 'MANU' AND PHT.LANGUAGE = 'EN'

    UNION ALL

    SELECT DISTINCT
        PT.F_ALIAS AS PRODUCT, PT.TEXT_CODE AS TEXT_CODE, 
        PHT.PHRASE AS F_PHRASE,PHT.LANGUAGE  
    FROM 
        PROD_ALIAS_TEXT PT
    LEFT JOIN 
        PHRASE_LINK PHL ON PT.TEXT_CODE = PHL.TEXT_CODE
    INNER JOIN 
        PHRASE_TRANSLATIONS PHT ON PHL.PHRASE_ID = PHT.PHRASE_ID
    WHERE 
        PT.DATA_CODE = 'MANU' AND PHT.LANGUAGE = 'EN'

输出：

F_PRODUCT       F_TEXTCODE       F_PHRASE F_LANGUAGE
-----------------------------------------------------
A               MANU001          TEST1     EN
A               MANU002          TEST2     EN

我从上方的视图创建了另一个视图，并使用东西在下方的输出中显示。

CREATE VIEW [dbo].[MANU_STUFFED] 
AS
    SELECT 
        V1.F_PRODUCT, v1.F_LANGUAGE,
        F_TEXT_CODES = STUFF((SELECT DISTINCT ',' + V2.F_TEXT_CODE 
                              FROM MANU_TEST V2 
                              WHERE V1.F_PRODUCT = V2.F_PRODUCT        
                              FOR XML PATH('')), 1, 1, ''),
        F_PHRASES = STUFF((SELECT DISTINCT ' |par ' + V3.F_PHRASE 
                           FROM MANU_TEST V3 
                           WHERE V1.F_PRODUCT = V3.F_PRODUCT
                           FOR XML PATH('')), 1, 5, '') 
    FROM 
        MANU_TEST V1 
    GROUP BY 
        V1.F_PRODUCT, V1.F_LANGUAGE 

输出：

F_PRODUCT  F_LANGUAGE  F_TEXTCODES,          F_PHRASES
-------------------------------------------------------------
A           EN         MANU001,MANU002      TEST1 |par TEST2

它正在工作，但是可以在单个视图中将以上两个查询合并为一个查询吗？

Answer 1

当然。您可以在视图中使用CTE：

CREATE VIEW [dbo].[MANU_STUFFED] AS
    WITH MANU_TEST AS (
          SELECT . . . 
    )
    SELECT . . .;

. . .是您现有的查询。