题
没有人有如何在PLSQL使用WITH和UPDATE查询中的一个样品?
我猛吃和没有成功一派。
下面就是我要做的。
WITH
OldRecords AS
(
SELECT 'New Records' as RecordLabel, rowid, OrDev.*
FROM CDR.MSRS_OR_ORDEV OrDev
WHERE 1=1
AND OrDev.ASOFENDDATETIME IS NULL
AND OrDev.REPORTSTARTDATE = to_date ('7/1/2010', 'mm/dd/yyyy')
AND OrDev.REPORTENDDATE = to_date ('7/31/2010', 'mm/dd/yyyy')
AND OrDev.downloadrequestid <> 3
),
NewRecords AS
(
SELECT 'Old Records' as RecordLabelrowid, OrDev.*
FROM CDR.MSRS_OR_ORDEV OrDev
WHERE 1=1
AND OrDev.ASOFENDDATETIME IS NULL
AND OrDev.REPORTSTARTDATE = to_date ('7/1/2010', 'mm/dd/yyyy')
AND OrDev.REPORTENDDATE = to_date ('7/31/2010', 'mm/dd/yyyy')
AND OrDev.downloadrequestid = 3
)
UPDATE CDR.MSRS_OR_ORDEV SET ASOFENDDATETIME = GETDATE()
WHERE RowID IN
(
SELECT OldRecords.RowId
FROM OldRecords
INNER JOIN NewRecords
ON OldRecords.Customer_Id = NewRecords.Customer_Id
AND OldRecords.BusinesKey1 = NewRecords.BusinesKey1
AND OldRecords.BusinesKey2 = NewRecords.BusinesKey2
)
基本上,这是一个II型尺寸更新。
解决方案
这是如何在一个PLSQL UPDATE使用WITH。请注意,这仅适用于单个列更新。
UPDATE CDR.MSRS_OR_ORDEV
SET ASOFENDDATETIME = sysdate
WHERE RowID IN
(
WITH
OldRecords AS
(
SELECT rowid, OldRecords.*
FROM CDR.MSRS_OR_ORDEV OldRecords
WHERE 1=1
AND OldRecords.ASOFENDDATETIME IS NULL
AND OldRecords.REPORTSTARTDATE = to_date ('7/1/2010', 'mm/dd/yyyy')
AND OldRecords.REPORTENDDATE = to_date ('7/31/2010', 'mm/dd/yyyy')
AND OldRecords.downloadrequestid <> 3
),
NewRecords AS
(
SELECT rowid, NewRecords.*
FROM CDR.MSRS_OR_ORDEV NewRecords
WHERE 1=1
AND NewRecords.ASOFENDDATETIME IS NULL
AND NewRecords.REPORTSTARTDATE = to_date ('7/1/2010', 'mm/dd/yyyy')
AND NewRecords.REPORTENDDATE = to_date ('7/31/2010', 'mm/dd/yyyy')
AND NewRecords.downloadrequestid = 3
)
SELECT OldRecords.RowId
FROM OldRecords
INNER JOIN NewRecords
ON OldRecords.BusinesKey1 = NewRecords.BusinesKey1
AND OldRecords.BusinesKey2 = NewRecords.BusinesKey2
);
其他提示
看为更新涉及的语法图>和选择,我不知道子查询分解可以更新使用。你既可以代替完全回到这些查询到您的UPDATE语句的子查询的一部分,或者你可以创建视图他们。我会去与意见。
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