我有两个数据库BD和BD2。对于BD中的每一行,我想在整个BD2中搜索并获得一些信息:Sum, Mean, Sd等。for (i in 1:dim(BD)[1]){ for (j in 1:dim(BD2)[1]) { if((BD$Start.Date[i]<BD2$X_TIMESTAMP[j]) && (BD2$X_TIMESTAMP[j]<BD$End.Date[i]) && (BD$Linea[i]==<
罪魁祸首是这两个嵌套的带有内嵌查询的CASE语句: CASE WHEN dbo.CURRENT_BUSINESSDAY(GETDATE()) >= 8 THEN 'Current Month BD2' WHEN dbo.CURRENT_BUSINESSDAYcal_start_date)
FROM dimdateperiod) THEN 'C
After this you can create two objects.jobject bd2= (*env)->NewObject(env,cls, mid, 0.0500);
在这里,我们在bd1和bd2中传递双精度值。如果我想在bd1 & bd2中传递一个字符串值,比如代替1.222,我会传递str where string str = "hello“。我需要做哪些改变。还有如何打印bd1和