在 SQL 服务器 (SSMS) 中替换为 LEFT OUTER JOIN

Question

当我尝试在下面的视图中创建唯一索引时，出现以下错误，

Msg 10113, Level 16, State 1, Line 431
Cannot create index on view "V3CONv.ADVANCED.BillsToBeDeletedVIEW" because it uses a LEFT, RIGHT, or FULL OUTER join, and no OUTER joins are allowed in indexed views. Consider using an INNER join instead.

INNER JOIN 将生成与所需数据集不同的数据集，我如何替换 Microsoft SQL 服务器中的 LEFT OUTER JOIN ??

CREATE VIEW ADVANCED.BillsToBeDeletedVIEW
WITH SCHEMABINDING
AS
    SELECT DISTINCT 
        I_BILLNUMBER 
    FROM 
        ADVANCED.BIF951_C 
    LEFT OUTER JOIN 
        ADVANCED.BIF003ToBeDeleted ON BIF003ToBeDeleted.C_CUSTOMER = ADVANCED.BIF951_C.C_CUSTOMER 
                                   AND BIF003ToBeDeleted.C_ACCOUNT = ADVANCED.BIF951_C.C_ACCOUNT
    WHERE 
        BIF003ToBeDeleted.C_CUSTOMER IS NOT NULL
        OR D_BILLDATE < '2016-06-01'

Answer 1

您可以使用两个单独的索引视图，如下所示：

create schema ADVANCED
go

    create table ADVANCED.BIF951_C(id int, I_BILLNUMBER int, D_BILLDATE datetime, C_CUSTOMER INT, C_ACCOUNT INT)

    CREATE TABLE ADVANCED.BIF003ToBeDeleted(ID INT, C_CUSTOMER INT, C_ACCOUNT INT)

    GO

    CREATE OR ALTER VIEW ADVANCED.BillsToBeDeletedVIEW_1
    WITH SCHEMABINDING
    AS
        SELECT  
            I_BILLNUMBER 
        FROM 
            ADVANCED.BIF951_C 
        JOIN 
            ADVANCED.BIF003ToBeDeleted ON BIF003ToBeDeleted.C_CUSTOMER = ADVANCED.BIF951_C.C_CUSTOMER 
                                       AND BIF003ToBeDeleted.C_ACCOUNT = ADVANCED.BIF951_C.C_ACCOUNT
     GO

     CREATE UNIQUE CLUSTERED INDEX IX_BillsToBeDeletedVIEW_1 ON ADVANCED.BillsToBeDeletedVIEW_1(I_BILLNUMBER)
     GO


    CREATE OR ALTER VIEW ADVANCED.BillsToBeDeletedVIEW_2
    WITH SCHEMABINDING
    AS


        SELECT I_BILLNUMBER
        FROM  ADVANCED.BIF951_C 
        WHERE D_BILLDATE < CONVERT(DATETIME,'2016-06-01',120)

        GO


     CREATE UNIQUE CLUSTERED INDEX IX_BillsToBeDeletedVIEW_2 ON ADVANCED.BillsToBeDeletedVIEW_2(I_BILLNUMBER)
     GO

     CREATE OR ALTER VIEW ADVANCED.BillsToBeDeletedVIEW
     AS 

       SELECT I_BILLNUMBER
       FROM BillsToBeDeletedVIEW_1
       UNION
       SELECT I_BILLNUMBER
       FROM BillsToBeDeletedVIEW_2

在 SQL 服务器 (SSMS) 中替换为 LEFT OUTER JOIN

Substitute a LEFT OUTER JOIN in SQL Server (SSMS)

sql-server

substitution