From: Elieser Leão <elieser@nho.com.br>
To: pgsql-sql@postgresql.org
Subject: Re: Verifying data type
Date: Tue, 17 Aug 2004 10:48:49 -0300
Message-ID: <41220CC1.1050608@nho.com.br> (raw)
Thanks, but the number may be a float, like '1.23,00', '12.323,00',
'12,34'.... :(
The regex works fine if it just an integer...
Have some regex to "compare"?
Tom Lane wrote:
>=?ISO-8859-1?Q?Elieser_Le=E3o?= <elieser@nho.com.br> writes:
>
>
>>I need to verify if the data in p_valor is just number or it is a string.
>>What is the best way to do this?
>>
>>
>
>In PG 8.0 you can just do it exactly the way your Oracle original does,
>viz try to cram it into a numeric variable and catch the exception if
>any.
>
>In earlier versions, my thoughts would run to some kind of string
>matching test using a regular expression.
>
>The regexp method is probably significantly faster though, so maybe you
>want to do it anyway, especially if you don't need the full generality
>of possible floating-point formats. You might get away with something
>as simple as "p_valor ~ '^[0-9]+$'" if you only care about unsigned
>integer inputs.
>
> regards, tom lane
>
>
>
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Subject: Re: Verifying data type
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