Can you sum one field in a list of fields? i.e.
SELECT job_line_discount.disc_id, job_line_discount.disc_amt, sum(job_actual_cost.progress_bill_amt) as pamount FROM job, job_actual_cost job_line_discount
Something's not quite right with that syntax. It looks like there should be a comma between the last two names in the FROM clause; otherwise,
job_line_discount will be an alias for
job_actual_cost. Based on what's in your SELECT list, those are probably separate tables.
To answer your question, yes, you can sum one field in a list of fields, but then all other fields that are not used in an aggregate function like SUM() must be listed in the GROUP BY clause --
select job_line_discount.disc_id , job_line_discount.disc_amt , sum(job_actual_cost.progress_bill_amt) as pamount from job , job_actual_cost , job_line_discount group by job_line_discount.disc_id , job_line_discount.disc_amt
Presumably, there will also be a WHERE clause, between the FROM and GROUP BY. Otherwise you'll get a cross join, and you probably don't want that.
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