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group by express

group by express

group by express

(OP)
Hi, I understand how to use group by, but how can group-by used as an expressions?
thank you for your time.

RE: group by express

Example:
select orderno,sum(price)
from orderrow
where orderdate > date('2002-01-01')
group by sum(price)
having sum(price) > 1000
order by orderno;

This means:
get me all ordernumbers and sum of price in orderrow table with the limit that orderdate should be after 1 jan and the price sum is more than 1000. Sort on ordernumber.

Group by is used together with aggregate functions (sum, count, max, min, avg...).

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