SQL query for getting count on same table using left outer join

Posted by Sasi on Stack Overflow See other posts from Stack Overflow or by Sasi
Published on 2011-01-16T23:07:27Z Indexed on 2011/01/16 23:53 UTC
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sql

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join

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left

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outer

Hi all,

I have a table from which i need to get the count grouped on two columns.

the table has two columns one datetime column and another one is success value(-1,1,0) What i am looking for is something like this...

count of success value for each month

month----success-----count
11------- -1 ------- 50

11------- 1 --------- 50

11------- 0 ------- 50

12------- -1 ------- 50

12------- 1 ------- 50

12------- 0 ------- 50

if there is no success value for a month then the count should be null or zero. I have tried with left outer join as well but of no use it gives the count incorrectly.

Thanks in advance Sasi

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