Question

I’m overlooking something trivial here. This query isn’t for any reason in particular other than trying to practice joining two queries. The errors that I get are

Msg 156, Level 15, State 1, Line 10
Incorrect syntax near the keyword 'inner'.
Msg 156, Level 15, State 1, Line 16
Incorrect syntax near the keyword 'as'.

And the query is

select t.countyName, x.countyName
    from
    (

    SELECT DISTINCT Patient.patientid, tblStateCounties.countyName, Patient.countyCode
    FROM         Patient INNER JOIN
                          tblStateCounties ON Patient.stateCode = tblStateCounties.stateCode AND Patient.countyCode = tblStateCounties.countyCode
    WHERE     (Patient.patientage > 80)
    ) 
    inner join 
    (
    SELECT DISTINCT Patient.patientid, tblStateCounties.countyName, Patient.countyCode
    FROM         Patient INNER JOIN
                          tblStateCounties ON Patient.stateCode = tblStateCounties.stateCode AND Patient.countyCode = tblStateCounties.countyCode
    WHERE     (Patient.patientage < 80)
    ) as x on t.countyname=x.countyname

Answer 1

you forgot use alias in the first subquery.