使用rownum将查询从Oracle迁移到MariaDB

Question

我正在尝试将我的数据库从oracle迁移到mariadb。

当我删除select查询时，它执行得很好，否则程序显示错误。

SELECT MSFID, CONVEFEES INTO OUT_MSFID,OUT_CONVEFEES
    FROM
      (SELECT MSF.MSFID 
        (CASE WHEN MSF.CHARGETYPE = 'H' THEN 
                     (CASE WHEN (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) > (IFNULL(FIXAMT,0))  THEN 
                           (LV_METRNAMT*((IFNULL(FIXPER,0))/100))
                       ELSE (IFNULL(FIXAMT,0) )END)
                  WHEN MSF.CHARGETYPE = 'L' THEN 
                      (CASE WHEN (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) > (IFNULL(FIXAMT,0))  THEN 
                            (IFNULL(FIXAMT,0)) 
                        ELSE (LV_METRNAMT*((IFNULL(FIXPER,0))/100))
                        END)
                  ELSE
                    (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) + (IFNULL(FIXAMT,0)) 
                END)

        -- (P_METRNAMT*((IFNULL(DMPER_OFFUS,0)*100)/100))+ (IFNULL(DMFIXAMT_OFFUS,0) * 100) 
        AS CONVEFEES
      FROM VTMEMSF MSF
      WHERE CURRENT_DATE() BETWEEN MSF.EFFFROM AND MSF.EFFTILL  AND MSF.SLABUPTO>= LV_METRNAMT AND STOREID=P_STOREID
        AND `MSF.STATUS` = 'A' AND MSF.MSFTYPE='C' -- AND MSF.TRANTYPE=P_TRNTYPE
        ORDER BY SLABUPTO)
     LIMIT 1;

Answer 1

SELECT MSFID, CONVEFEES INTO OUT_MSFID,OUT_CONVEFEES
    FROM
      (SELECT MSF.MSFID 
        (CASE WHEN MSF.CHARGETYPE = 'H' THEN 
                     (CASE WHEN (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) > (IFNULL(FIXAMT,0))  THEN 
                           (LV_METRNAMT*((IFNULL(FIXPER,0))/100))
                       ELSE (IFNULL(FIXAMT,0) )END)
                  WHEN MSF.CHARGETYPE = 'L' THEN 
                      (CASE WHEN (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) > (IFNULL(FIXAMT,0))  THEN 
                            (IFNULL(FIXAMT,0)) 
                        ELSE (LV_METRNAMT*((IFNULL(FIXPER,0))/100))
                        END)
                  ELSE
                    (LV_METRNAMT*((IFNULL(FIXPER,0))/100)) + (IFNULL(FIXAMT,0)) 
                END)

        #-- (P_METRNAMT*((IFNULL(DMPER_OFFUS,0)*100)/100))+ (IFNULL(DMFIXAMT_OFFUS,0) * 100) 
        AS CONVEFEES
      FROM VTMEMSF MSF
      WHERE CURRENT_DATE() BETWEEN MSF.EFFFROM AND MSF.EFFTILL  AND MSF.SLABUPTO>= LV_METRNAMT AND STOREID=P_STOREID
        AND `MSF.STATUS` = 'A' AND MSF.MSFTYPE='C' #-- AND MSF.TRANTYPE=P_TRNTYPE
        ORDER BY SLABUPTO) s
     LIMIT 1;