Finding No. Duplicate records for multiple columns (Fields)
What could be the best approach for finding No. of duplicate records for multiple columns in a table? I mean suppose we have 10 fields in table(A,B,C,D,E,F,G,H,I,J). First field (A) is ID. now i want to see that how many times B & C Fields are duplicated? Then How many times B and D then Also how many times Combination of (B,C,D) are duplicated and so on? What approach will be best? Thoughts?