SQL SUM question

Question

Hi I have a question about SUM in sql,

I have a query that looks like this

SELECT 
 SUM ( table_one.field + table_two.field )  as total_field
 SUM ( tota         


        

Answer 1

You cannot use the column alias in an aggregate to reference the value, just SUM again;

SELECT 
 SUM ( table_one.field + table_two.field ) as total_field, --your missing a , also
 SUM ( table_one.field + table_two.field + table_one.anotherfield )
FROM 
 table_one
JOIN
 table_two ON table_one.id = table_two.id
WHERE 
 table_one = 1