Question

我有一个成功编译的程序。更新docmeta表并在记录流入temp_pay_term表后插入updatehistory表。问题是代码需要两个修复1）当它们是temp_pay_term表中的多个记录时，删除命令at在下面的代码中的第65行，只删除temp_term表的一个记录而不是全部。我希望在此过程完成其全部工作后删除temp_pay_term表的所有记录。我是否必须在循环内使用循环来实现这一目标。如果是，那怎么样？请告诉我代码。 2）现在这困扰了我一段时间。从下面代码中的第28-34行，当我更新docmeta表以设置XPAYMENTTERM值时，因为此后的条件是子查询，所以我只能得到一行。出于这个原因，我想通过paytermtimestamp desc返回记录pid = d.xProject_id AND rownum＆lt; = 1 order。但order by子句不适用于此处并抛出错误。如何在此处应用order by子句来获取最新记录。

CREATE OR REPLACE
PROCEDURE TERMUPDATE
IS
  RecordCount    INT;
  varDID         NUMBER(38);
  varpaymentterm VARCHAR2(200 CHAR);
  varprojectID   VARCHAR2(30 CHAR);
BEGIN
  RecordCount :=0;
  SELECT COUNT(1)
  INTO RecordCount
  FROM temp_pay_term;
  IF RecordCount > 0 THEN
    FOR X       IN
    (SELECT DISTINCT r.ddocName
    FROM temp_Pay_Term p,
      docMeta d,
      revisions r
    WHERE TO_CHAR(p.pid) = d.xproject_id
    AND r.did            = d.did
    )
    LOOP
      SELECT MAX(did)
      INTO varDid
      FROM revisions r
      WHERE r.ddocname = X.ddocName
      GROUP BY r.ddocname;
      UPDATE docmeta d
      SET XPAYMENTTERM =
        (SELECT paymentterm
        FROM temp_pay_term
        WHERE pid   = d.xProject_id
        AND rownum <= 1
        )
      WHERE d.did = vardid returning xpaymentterm,
        xProject_id
      INTO varpaymentterm,
        varprojectID;
      INSERT
      INTO updatehistory
        (
          UPDATEID,
          DID,
          UPDATETIME,
          METADATAFIELD,
          NEWVALUE,
          OLDVALUE,
          UPDATEDBY
        )
        VALUES
        (
          (SELECT MAX(updateid)+1 FROM updatehistory
          )
          ,
          (SELECT did FROM revisions WHERE did = vardid
          ),
          systimestamp,
          'Payment term',
          varpaymentterm,
          ( SELECT oldpaymentterm FROM temp_pay_term WHERE pid = varprojectID
          ),
          'sysadmin'
        );
    END LOOP;
    DELETE FROM temp_Pay_Term WHERE pid = varprojectID;
    COMMIT;
  END IF;
END TERMUPDATE; -- PL SQL code

删除多条记录。循环在一个过程中循环

0 个答案: