Re: please help me on regular expression

Hi,

Thanks for your reply.
Indeed, why not?

Tena Sakai
tsakai(at)gallo(dot)ucsf(dot)edu

On 2/3/10 3:38 AM, "msi77" <msi77(at)yandex(dot)ru> wrote:

> Why not to use
>
> select subjectid, height
> from tsakai.pheno
> where height like '%.%';
>
> ?
>
>> Hi everybody,
>> I need a bit of help on postgres reqular expression.
>> With a table of the following definition:
>> Table "tsakai.pheno"
>> Column | Type | Modifiers
>> -----------+-------------------+-----------
>> subjectid | integer | not null
>> height | character varying | not null
>> race | character varying | not null
>> blood | character varying | not null
>> I want to catch entries in height column that includes a
>> decimal point. Here's my attempt:
>> select subjectid, height
>> from tsakai.pheno
>> where height ~ '[:digit:]+.[:digit:]+';
>> Which returns 0 rows, but if I get rid of where clause,
>> I get rows like:
>> subjectid | height
>> -----------+--------
>> 55379 | 70.5
>> 55383 | 69
>> 55395 | 70
>> 56173 | 71
>> 56177 | 65.5
>> 56178 | 70
>> . .
>> . .
>> And when I escape that dot after first plus sign with a backslash,
>> like this:
>> where height ~ '[:digit:]+\.[:digit:]+';
>> then I get complaint:
>> WARNING: nonstandard use of escape in a string literal
>> LINE 3: where height ~ '[:digit:]+\.[:digit:]+';
>> ^
>> HINT: Use the escape string syntax for escapes, e.g., E'\r\n'.
>> From there, it was a downward spiral descent...
>> Please help.
>> Thank you.
>> Regards,
>> Tena Sakai
>> tsakai(at)gallo(dot)ucsf(dot)edu
>>
>
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