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Summarise results

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Hi,

I want to summarise my monthly sales results per day (see Attachment).

That's my current code:

SELECT sum FROM tb WHERE year=selected_year AND month=selected_month ORDER BY day ASC

 

But instead of showing each single sale I want to summarise all sales per day and show the total sum.
How can I do this?

THX
Simon

Bildschirmfoto 2018-06-15 um 12.15.26.png

Edited by Pinback

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"Sum" should be a reserved word, so hopefully something like this works:

SELECT SUM(sum) FROM ...

If you use the SUM function it will return a single value with that column added up.

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Thx , you're right. But in this case this isn't the prob...

As I described I need the sum of each single day of all days per month.
I guess I need something like DISTINCT, JOIN and SUM..but I don't know how 😞

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