如何使用更新和在PLSQL

Question

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。

Answer 1

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
);

Answer 2

看为更新和选择，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。