converting text to float? - Mailing list pgsql-sql

From Bart Ogryczak
Subject converting text to float?
Date
Msg-id 37B2BED6.1F7005E2@bart.w-wa.pl
Whole thread Raw
List pgsql-sql
Hey,
I'm trying hard to convert text to float, and all i get are 
messages like this:

select float4(wartosc) from  tblwartosci ;
ERROR:  Function 'float4(text)' does not exist       There is more than one function that satisfies the given
argument types       You will have to retype your query using explicit typecasts

select float4(int(wartosc)) from  tblwartosci ;
ERROR:  pg_atoi: error in "285.75": can't parse ".75"

Table    = tblwartosci
+----------------------------------+----------------------------------+-------+
|              Field               |              Type                |
Length|
+----------------------------------+----------------------------------+-------+
.
.
| wartosc                          | text                            
|   var |
+----------------------------------+----------------------------------+-------+

Is there a resonable way to do text to float conversion?

bart
-- 
bart@bart.w-wa.pl || http://www.bart.w-wa.pl


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