I have 5 text file like : FILE1 A B C D 2 3 4 NULL 13 20 3 7 23 NULL 0 3 FILE2 B D C A 20 3 0 1 3 0 20 NULL NULL 2 1 13 WHAT I WANT TO DO IS 1- READ COLUMN HEADER FROM FILE1 ...

I need to compare two database tables t1 and t2 column by column here is my idea about that : For (int i= 0 ;i<= number of column in t1;i++) { Read columni For (int j= 0 ;j<= number of column in t2;i++) ...