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Row To Column (PIVOT)

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A very frequent request is how to pivot/transpose/crosstab a query. SQL server 2005 introduced PIVOT, this makes life a lot easier compared to the SQL 2000 days. So let's see how this works. First create this table

  1. CREATE TABLE #SomeTable
  2. (SomeName VARCHAR(49), Quantity INT)
  5. INSERT INTO #SomeTable VALUES ('Scarface', 2)
  6. INSERT INTO #SomeTable VALUES ('Scarface', 4)
  7. INSERT INTO #SomeTable VALUES ('LOTR', 5)
  8. INSERT INTO #SomeTable VALUES ('LOTR', 6)
  9. INSERT INTO #SomeTable VALUES ( 'Jaws', 2)
  10. INSERT INTO #SomeTable VALUES ('Blade', 5)
  11. INSERT INTO #SomeTable VALUES ('Saw', 6)
  12. INSERT INTO #SomeTable VALUES ( 'Saw', 2)
  13. INSERT INTO #SomeTable VALUES ( 'Jaws', 12)
  14. INSERT INTO #SomeTable VALUES ('Blade', 5)
  15. INSERT INTO #SomeTable VALUES ('Saw', 6)
  16. INSERT INTO #SomeTable VALUES ( 'Saw', 2)

What we want is to list all the movies in a column and the sum of all quantities for that movie as a value. So in this case we want this output

Scarface LOTR Jaws Saw Blade
6 11 14 16 10

First let's look how we can do this in SQL Server 2000, this BTW will also work in SQL Server 2005/2008:

  1. SELECT SUM(CASE SomeName WHEN 'Scarface' THEN Quantity ELSE 0 END) AS Scarface,
  3. SUM(CASE SomeName WHEN 'Jaws' THEN Quantity ELSE 0 END) AS Jaws,
  4. SUM(CASE SomeName WHEN 'Saw' THEN Quantity ELSE 0 END) AS Saw,
  5. SUM(CASE SomeName WHEN 'Blade' THEN Quantity ELSE 0 END) AS Blade
  6. FROM #SomeTable

In SQL Server 2005/2008 we can use PIVOT, here is how we can use it

  1. SELECT Scarface, LOTR, Jaws, Saw,Blade
  2. FROM
  3. (SELECT SomeName,Quantity
  4. FROM #SomeTable) AS pivTemp
  5. PIVOT
  6. (   SUM(Quantity)
  7.     FOR SomeName IN (Scarface, LOTR, Jaws, Saw,Blade)
  8. ) AS pivTable

So that looks a little bit neater than the SQL 2000 version.

Contributed by: --SQLDenis 02:23, 31 May 2008 (GMT)

Part of SQL Server Programming Hacks

Section Sorting, Limiting Ranking, Transposing and Pivoting

279 Rating: 2.7/5 (128 votes cast)