SELECT CREX.RECODE,
(CASE WHEN ARX.ARRATE <> 0 THEN
ARX.ARRATE
ELSE
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT1 THEN
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT2 THEN
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT3 THEN
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT4 THEN
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT5 THEN
(CASE WHEN SBX.SBCLBL-SBX.SBDRBL > ARX.ARAMT6 THEN
ELSE ARX.ARRAT6 END)
ELSE ARX.ARRAT5 END)
ELSE ARX.ARRAT4 END)
ELSE ARX.ARRAT3 END)
ELSE ARX.ARRAT2 END)
ELSE ARX.ARRAT1 END)
END) AS BUNGA,
ROW_NUMBER() OVER(PARTITION BY CREX.RECODE ORDER BY ARX.ARDTVL DESC) AS RN
FROM CTE_M5RE CREX
LEFT JOIN CORE_BMI.M6SB SBX ON (CREX.RECODE = SBX.SBRECO)
LEFT JOIN CORE_BMI.H8AR ARX ON (CREX.RECODE = ARX.ARRECO)
我正在编写一个MySQL查询,其中需要根据相当多的条件来计算返回的一些列。
任何人都知道如何修正我的代码吗?
我确实怀疑您的嵌套表达式可以简化为:
CASE
WHEN ARX.ARRATE <> 0 THEN ARX.ARRATE
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT1 THEN ARX.ARRAT1
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT2 THEN ARX.ARRAT2
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT3 THEN ARX.ARRAT3
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT4 THEN ARX.ARRAT4
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT5 THEN ARX.ARRAT5
WHEN SBX.SBCLBL - SBX.SBDRBL <= ARX.ARAMT6 THEN ARX.ARRAT6
END AS BUNGA