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query help count()

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query help count() General SQL help. Help with MySQL, MSSQL, Oracle, mSQL, PostgreSQL, etc.

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  #1  
Old February 4th, 2004, 06:34 AM
gigabyte gigabyte is offline
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query help count()
Hello:

Can someone please help me with this mysql query. For example if I had the a table with the below information I want to get the count of wins and losses. Does anyone know if there is away I can get the numbers if I dont have the fields 'Wins' and 'Losses'. I would like to get the numbers based on the 'Result'.

php Code:
Original - php Code 
  1.  
  2. +------+------+--------+--------+
  3. | Name | Wins | Losses | Result |
  4. +------+------+--------+--------+
  5. | John | 1    | 0      | W      |
  6. +------+------+--------+--------+
  7. | John | 1    | 0      | W      |
  8. +------+------+--------+--------+
  9. | John | 0    | 1      | L      |
  10. +------+------+--------+--------+
  11. | John | 0    | 1      | L      |
  12. +------+------+--------+--------+
  13. | John | 1    | 0      | W      |
  14. +------+------+--------+--------+
  15. | John | 1    | 0      | W      |
  16. +------+------+--------+--------+
  17. | John | 1    | 0      | W      |
  18. +------+------+--------+--------+
  19. | John | 0    | 1      | L      |
  20. +------+------+--------+--------+
  21. | John | 1    | 0      | W      |
  22. +------+------+--------+--------+
  23.  
  24. mysql> SELECT Name, COUNT(Wins), COUNT(Losses)
  25.     ->        FROM Table
  26.     ->        WHERE 1=1
  27.     ->        GROUP BY Name
  28.  
  29. reslt>
  30. +------+------+--------+
  31. | Name | Wins | Losses |
  32. +------+------+--------+
  33. | John | 6    | 3      |
  34. +------+------+--------+
  35.  


Does anyone one know how I can get the count based on the Result?

mysql> SELECT Name, COUNT(Result='W') AS Wins, COUNT(Result='L') As Losses
-> FROM Table
-> WHERE 1=1
-> GROUP BY Name
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  #2  
Old February 4th, 2004, 06:39 AM
nawlej nawlej is offline
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RE: query help count()
SELECT Name, sum(Wins)AS Wins, sum(Losses) AS Losses FROM Table WHERE 1=1 GROUP BY Name;
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  #3  
Old February 4th, 2004, 06:50 AM
Anonymous Anonymous is offline
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RE: query help count()
Huh? that's not going to do it. Maybe I should rephrase the question. What if I don't have the fields 'Wins' and 'Losses'. How can I get the count the wins and losses based on the field 'Result'
php Code:
Original - php Code 
  1.  
  2. +------+--------+
  3. | Name | Result |
  4. +------+--------+
  5. | John | W      |
  6. +------+--------+
  7. | John | W      |
  8. +------+--------+
  9. | John | L      |
  10. +------+--------+
  11. | John | L      |
  12. +------+--------+
  13. | John | W      |
  14. +------+--------+
  15. | John | W      |
  16. +------+--------+
  17. | John | W      |
  18. +------+--------+
  19. | John | L      |
  20. +------+--------+
  21. | John | W      |
  22. +------+--------+
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  #4  
Old February 4th, 2004, 07:18 AM
nawlej nawlej is offline
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RE: query help count()
Did you try it like this yet?

SELECT Name, sum(Result='W') AS Wins, sum(Result='L') As Losses
-> FROM Table
-> WHERE 1=1
-> GROUP BY Name
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