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Message Posted: Fri, 02 Jan 2009 @ 14:32:03 GMT

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Hi Shijo,

it's not elegant but this should work

     select sum(counts) total_number from
     (
     select column1, count (*) as counts from tablename1
     inner join
     (select
     column1 from tablename2 where condition
     group by 1) as tablename2
     on tablename1.column1 = tablename2.column1
     group by 1
     ) tablename3

Note: the group by in the derived table is related for avoiding double countings (in case you have)

Hope this helps.

Regards

Joerg

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