Re: update help

From: Carolyn Lu Wong <carolyn(at)greatpacific(dot)com(dot)au>
To: Tubagus Nizomi <nizomi(at)dnet(dot)net(dot)id>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: update help
Date: 2001-01-18 03:58:37
Message-ID: 3A6669ED.C37F420C@greatpacific.com.au
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This update field with the sum of all amounts in t2. I want to update
sum of each individual IDs.

Tubagus Nizomi wrote:
>
> update t1
> set amount = sum(b.amount)
> from ts b
> where a.id=b.id
>
> On Thursday 18 January 2001 09:54, Carolyn Wong wrote:
> > I'd like to know what's the correct SQL statement to do the following:
> >
> > update t1 a
> > set a.amount = sum(b.amount)
> > from t2 b
> > where a.id = b.id

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