Re: string functions and operators

From: Petru Ghita <petrutz(at)venaver(dot)info>
To: Neil Stlyz <neilstylz(at)yahoo(dot)com>, pgsql-sql mailing list <pgsql-sql(at)postgresql(dot)org>
Subject: Re: string functions and operators
Date: 2010-03-23 01:50:10
Message-ID: 4BA81E52.9090200@venaver.info
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That field of yours... what type is it?
Is it TEXT? is it a numeric type?
If it's TEXT, why don't you make it say... NUMERIC(/10/, /6///)?

http://www.postgresql.org/docs/8.4/interactive/datatype-numeric.html#DATATYPE-NUMERIC-DECIMAL

On 23/03/2010 2:20, Neil Stlyz wrote:
> Hello,
>
> I have a dilema and I was hoping someone here may offer guidance
> or assistance. I bet this is a very simple question for someone
> out there but I am having problems coming up with a solution. Here
> it is...
>
> suppose I have a field with the following values:
>
> 77.1 77.2 134.1 134.2 134.3 5.1 5.2
>
> I need two seperate SELECT queries. One would return the following
> values (everything left of the decimal point)
>
> 77 77 134 134 5 5
>
> The second query would return all of the values to the right of
> the decimal point:
>
> 1 2 1 2 3 1 2
>
>
> Now, I have been using the following information (although very
> Greek) to try to solve this problem:
>
> http://www.postgresql.org/docs/current/static/functions-string.html
>
> And I have been playing around with the syntax of the following:
>
> substring('112.5' from '%#"___.#"_' for '#')
>
> but the aforementioned is not quite working out... can someone
> please show me a string function that will produce the desired
> results?
>
> Thanks! ~n
>
>
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