Question

Possible Duplicate:
Split Multiple Columns into Multiple Rows

My table look like this

accounting | research | sales | operations 
------------------------------------------
         3 |        5 |     6 |          0

It is necessary to receive a resultant set with two columns and four lines

dname      |        cnt
-----------------------
accounting |          3
research   |          5
sales      |          6
operations |          0

Answer 1

Use the UNPIVOT table operator like so:

DECLARE @t table (accounting int, research int, sales int, operations int);

INSERT INTO @t VALUES(3, 5, 6, 0);

   SELECT dname, cnt
    FROM
    (
       SELECT accounting, research, sales, operations 
       FROM @t
    ) t 
    UNPIVOT
    (
      cnt FOR dname IN (accounting, research, sales, operations )
    ) u

Here is a live demo

Here is the standard sql query for doing this, for RDBMS that doesn’t support UNPIVOT table operator:

SELECT dname,
  CASE dname
    WHEN 'accounting' THEN accounting 
    WHEN 'research'   THEN research
    WHEN 'sales'      THEN sales
    WHEN 'operations' THEN operations
  END AS cnt
FROM @t
CROSS JOIN
(
   SELECT 'accounting' dname
   UNION ALL SELECT 'research' 
   UNION ALL SELECT 'sales' 
   UNION ALL SELECT 'operations'
) t2
WHERE dname IS NOT NULL

Live DEMO