Thread: HOWTO? if it exists, increment it, else, insert it
I can't seem to get CASE to work for me here and every example that I see is using CASE in a completely different way.
have a table:
day(default CURRENT_DATE), user, count_of_a, count_of_b
index is ("day", user)
What is the best postgres way to handle updating this table?
I basically need to say,
if (day,user) exists, then increment count A
else insert day, user, and count_a = 1.
thank you in advance
have a table:
day(default CURRENT_DATE), user, count_of_a, count_of_b
index is ("day", user)
What is the best postgres way to handle updating this table?
I basically need to say,
if (day,user) exists, then increment count A
else insert day, user, and count_a = 1.
thank you in advance
am Thu, dem 25.01.2007, um 9:06:25 -0800 mailte Brian Neu folgendes:
> I can't seem to get CASE to work for me here and every example that I see is
> using CASE in a completely different way.
>
> have a table:
>
> day(default CURRENT_DATE), user, count_of_a, count_of_b
>
> index is ("day", user)
>
>
> What is the best postgres way to handle updating this table?
>
> I basically need to say,
>
> if (day,user) exists, then increment count A
> else insert day, user, and count_a = 1.
>
Take a look at:
http://www.postgresql.org/docs/current/static/plpgsql-control-structures.html#PLPGSQL-UPSERT-EXAMPLE
Andreas
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Andreas Kretschmer
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