Divide counts within table

Last Post 29 Oct 2009 11:15 AM by SQLUSA. 1 Replies.
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klanners
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New Member

--
14 Sep 2009 11:47 AM
This doesn't seem like it should be this hard... maybe it's just a Monday thing.

I've got some data in a table and I want to divide a subset of it by another. Specifically when I'm looking at a specific status and then the number of records with that status over 90 days old. I've written the query below but I get an incorrect syntax error at the , between the two selects. Now I'm stumped.

select x / y
from
(select count(*) x from My_Table where Status = 'O' and Days_Old < '90'),
(select count(*) y from My_Table where Status = 'O')
SQLUSA
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New Member

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29 Oct 2009 11:15 AM
You don't even need the FROM clause since the SELECTs return scalar values:

SELECT 1.0 * (SELECT COUNT(*) FROM Sales.SalesOrderHeader) /
(SELECT COUNT(*) FROM Sales.SalesOrderDetail)
-- 0.259361837170

Kalman Toth, SQL Server 2005 Training
http://www.sqlusa.com
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