From: Tena Sakai <tsakai@gallo.ucsf.edu>
To: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: please help me on regular expression
Date: Tue, 2 Feb 2010 11:22:54 -0800
Message-ID: <C78DBD69.918D%tsakai@gallo.ucsf.edu> (raw)
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'.
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To: pgsql-sql@postgresql.org
Cc: tsakai@gallo.ucsf.edu
Subject: Re: please help me on regular expression
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