Question

我有一个带有通用表表达式的层次查询：

WITH Revision(REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND) AS
(
    SELECT REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND
    FROM MonitoringGroupBusinessLine_AUD
    WHERE REV = 1045
    UNION ALL
    SELECT rev.REV, rev.MonitoringGroupId, rev.BusinessLineId, rev.REVTYPE, rev.REVEND
    FROM MonitoringGroupBusinessLine_AUD rev
    INNER JOIN Revision ON rev.REVEND = Revision.REV
)
SELECT 
    DISTINCT
    MonitoringGroupId, 
    BusinessLineId, 
    IIF(REVTYPE = 2, 'REMOVE', 'ADD') as Operation
FROM Revision

我想将它用作子查询，诸如此类：

SELECT audit.MonitoringGroupId, audit.BusinessLineId, audit.Operation
FROM
(
    WITH Revision(REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND) AS
    (
        SELECT REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND
        FROM MonitoringGroupBusinessLine_AUD
        WHERE REV = 1045
        UNION ALL
        SELECT rev.REV, rev.MonitoringGroupId, rev.BusinessLineId, rev.REVTYPE, rev.REVEND
        FROM MonitoringGroupBusinessLine_AUD rev
        INNER JOIN Revision ON rev.REVEND = Revision.REV
    )
    SELECT 
        DISTINCT
        MonitoringGroupId, 
        BusinessLineId, 
        IIF(REVTYPE = 2, 'REMOVE', 'ADD') as Operation
    FROM Revision
) audit

我有一个错误：

关键字“ with”附近的语法不正确。如果这个陈述是公用表表达式，xmlnamespaces子句或更改跟踪上下文子句，前一条语句必须以分号。

我尝试在;之前添加WITH，但仍然无法正常工作。如何将我的分层查询用作子查询？

Answer 1

您在输出中进行子查询。

;WITH Revision(REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND) AS
(
    SELECT REV, MonitoringGroupId, BusinessLineId, REVTYPE, REVEND
    FROM MonitoringGroupBusinessLine_AUD
    WHERE REV = 1045
    UNION ALL
    SELECT rev.REV, rev.MonitoringGroupId, rev.BusinessLineId, rev.REVTYPE, rev.REVEND
    FROM MonitoringGroupBusinessLine_AUD rev
    INNER JOIN Revision ON rev.REVEND = Revision.REV
)
SELECT audit.MonitoringGroupId, audit.BusinessLineId, audit.Operation
FROM
(
    SELECT 
        DISTINCT
        MonitoringGroupId, 
        BusinessLineId, 
        IIF(REVTYPE = 2, 'REMOVE', 'ADD') as Operation
    FROM Revision
) audit

带CTE的SQL子查询

1 个答案: