Question

+----------+----------+-----------------------+-----------------------------+
| Coloumn1 | Coloumn2 |       Coloumn3        |          coloumn4           |
+----------+----------+-----------------------+-----------------------------+
| NULL     | AAAA     | NOTICE                | Plaintiffs Notice of Filing |
| NULL     | AAAB     | NOTICE CANCEL HEARING | Plaintiffs Notice of Filing |
+----------+----------+-----------------------+-----------------------------+

I have this table and I want to get distinct value from coloumn4.

I also need the Coloumn2 data for the first corresponding column 4 data. For example, row 1 and 2 have same data in coloumn4. So on applying query I need data like:

Coloumn2 | Coloumn4
---------|----------------------------
AAAA     | Plaintiffs Notice of Filing

What is the SQL query to get this data?

Answer 1

SELECT column4, MIN(column2)
FROM tableName
GROUP BY column4

SQLFiddle Demo