只是我有两个表ForecastBackup，ForecastTotal我想从ForecasTotal表中选择 4 列并插入到ForecastBackup
例如 ForecastTotal
UCPVol UCPVal IBNSINAVol IBNSINAVal
1 1 NULL NULL
2 3 NULL NULL
NULL NULL 1 4
NULL NULL 3 5
NULL NULL 1 6
我想插入ForecastBackup非空值我的意思是结果应该是
UCPVol UCPVal IBNSINAVol IBNSINAVal
1 1 1 4
2 3 3 5
NULL NULL 1 6
我使用了这个 SQL 命令但不起作用
INSERT INTO
ForecastBackup (UCPVol,UCPVal,IBNSINAVol,IBNSINAVal)
SELECT (select UCPVol,UCPVal from ForecastTotal where UCPVol is not null),
(select IBNSINAVol,IBNSINAVal from ForecastTotal where IBNSINAVal is not null)
from ForecastTotal
这可能吗 ？
根据您的输入和输出，我认为您需要此查询
INSERT INTO ForecastBackup (UCPVol,UCPVal, IBNSINAVol, IBNSINAVal)
SELECT
A.UCPVol, A.UCPVal, B.IBNSINAVol, B.IBNSINAVal
FROM
ForecastTotal A
LEFT JOIN
ForecastTotal B ON A.UCPVal = B.IBNSINAVol
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我来说两句