从 DB2 移植到 ORACLE - ORA-00907：缺少右括号

Posted 2023-05-08

【中文标题】从 DB2 移植到 ORACLE - ORA-00907：缺少右括号

【英文标题】：PORTING FROM DB2 TO ORACLE - ORA-00907: missing right parenthesis

【发布时间】：2013-07-12 09:44:32

【问题描述】：

我在第 7 行，第 6 列收到错误“ORA-00907：缺少右括号” 当我在 ORACLE 11g DB 上启动此查询时：

 SELECT B.ID_COND AS IDCOND,B.ID_PAYMENT AS IDPAYMENT, B.DT_SCAD AS DATASCAD, B.DT_PAYMENT AS DATAPAYMENT,B.DE_CHANNELPAG AS CHANNELPAYMENT, B.DT_STARTVALID AS DATASTART, B.DT_ENDVALID AS DATAEND,
            B.IM_TOTAL AS TOTAL, B.ST_PAYMENT AS STATECOND, B.CO_CIP AS codCIP, B.ID_PEND AS IDPEND, B.TI_PAYMENT AS TIPOPAYMENT,
            B.cause_PAYMENT AS causaleCOND, B.IM_PAYMENT AS amountPAYMENT, B.DE_MIDDLEPAYMENT AS MIDDLEPAYMENT, B.DE_NOTEPAYMENT as notePAYMENT,    
            (select st_PAYMENT from QLT.paymnts P
                where P.ID_COND=B.ID_COND
      AND ROWNUM <= 1
                order by (CASE WHEN P.st_PAYMENT='ES' THEN 1 ELSE 0 END) DESC, TS_INSMNT DESC
            ) AS STATEPAYMENT
    FROM  QLT.JLTCOPD B
        WHERE  B.ID_PEND = '269' AND B.TI_PAYMENT = 'S' 
        ORDER BY B.DT_SCAD ASC, DT_STARTVALID ASC

尝试删除此行：'order by (CASE WHEN P.st_PAYMENT='ES' THEN 1 ELSE 0 END) DESC, TS_INSMNT DESC' 不显示错误并返回结果。

我正在尝试将 DB2 查询转换为 ORACLE，原来的 DB2 内部查询是：

(select st_PAYMENT from QLT.paymnts P where P.ID_COND=B.ID_COND order by (CASE WHEN P.st_PAYMENT='ES' THEN 1 ELSE 0 END) DESC, TS_INSMNT DESC fetch first 1 rows only) 

我怎样才能改变它以便在没有错误的情况下进行移植？

【问题讨论】：

“rownum”在“order by”之前应用，所以在你的内部查询中，“order by”没有任何作用

你是对的！我正在尝试将 DB2 查询转换为 ORACLE，原来的 DB2 内部查询是：（select st_PAYMENT from QLT.paymnts P where P.ID_COND=B.ID_COND order by (CASE WHEN P.st_PAYMENT='ES' THEN 1 ELSE 0 END) DESC, TS_INSMNT DESC 仅获取前 1 行) 我怎样才能更改它以便在没有错误的情况下进行移植？

【参考方案1】：

尝试将内部查询替换为：

(
    select st_PAYMENT FROM 
    (
        select st_PAYMENT from QLT.paymnts P
        where P.ID_COND=B.ID_COND
        order by (CASE WHEN P.st_PAYMENT='ES' THEN 1 ELSE 0 END) DESC, TS_INSMNT DESC
    )
    WHERE ROWNUM <= 1
)