From: | Ulf Mehlig <umehlig(at)uni-bremen(dot)de> |
---|---|
To: | molivier(at)yahoo(dot)com |
Cc: | pgsql-sql(at)postgreSQL(dot)org |
Subject: | Re: [SQL] abs value, power, sqrt |
Date: | 1998-11-20 07:00:01 |
Message-ID: | 199811200700.IAA01780@uni-bremen.de |
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Lists: | pgsql-sql |
Michael Olivier <molivier(at)yahoo(dot)com> wrote:
> I need a way to get abs value of a floating point number and
> (possibly separate function for) abs value of an integer in a select
> statement.
You had to look up the manuals at numerical *operators* -- no need to
define YAF ;-)
=> select @-17.0;
17
> Also how do I do squares and square roots? I saw some \|/ type
> notation for square root in an SQL book, but I didn't get postgres
> to take that.
try e.g.
=> select 2*2, 2^2;
4 4
and:
=> select |/2;
1.4142135623731
without the backslash (originally quoting in a shell?) it seems to
work ...
Hope it helps
Ulf
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