Problem with LIMIT & IN/ALL/ANY/SOME subquery

Question

I have this query:

SELECT count(cp.CxID) as intSmokers 
FROM CustPrimarySmoking cp 
JOIN Customer c ON cp.CxID = c.CustomerID 
WHERE 
cp.CxID IN (SELECT CxID         


        

Answer 1

You don't need to use the subquery to retrieve all the records, just exclude the first one:

SELECT count(cp.CxID) as intSmokers FROM CustPrimarySmoking cp JOIN Customer c ON cp.CxID = c.CustomerID WHERE cp.CxID > (SELECT cxID FROM CustPrimarySmoking ORDER BY cxID LIMIT 1)

Assuming that cxid is numeric