Re: UTF8 encoding and non-text data types - Mailing list pgsql-sql

Hi Steve,
Have you tried converting to a decimal type or cast for the cost field? 
If you
are gathering this data from a text field and  placing in a variable of 
type string
then using that variable in the insert statement it may be rejected 
because it is not
type decimal. This  has been my experience with trying to get input data 
from
user's textfields and placing in the db.

dana.

> Thanks Steve,
>
> Actually I do not insert text data into my numeric field.
> As I mentioned given
> create table t1 { name text, cost decimal }
> then I would like to insert numeric data into column "cost" because 
> then I can later benefit from numerical operators like SUM, AVG, etc
>
> More specifically, I am using HTML, Perl and PG. So from the HTML 
> point of view a textfield is just some strings. So my user would enter 
> 12345 but expressed in UTF8. Perl would get this and use DBI to insert 
> it into PG
>
> What I am experiencing now is that DB errors that I am trying to 
> insert an incorrect data into column "cost" which is numeric and the 
> data is coming in from HTML in UTF8
>
> Mybe I have to convert it to ASCII numbers in Perl before inserting  
> them into PG
>
> Thanks
> Medi
>
> >
> >I understand PG supports UTF-8 encoding and I have sucessfully
> >inserted
> >Unicode text into columns. I was wondering about other data types such
> >as
> >numbers, decimal, dates
> >
> >That is, say I have a table t1 with
> >create table t1 { name text, cost decimal }
> >I can insert UTF8 text datatype into this table with no problem
> >But if my application attempts to insert numbers encloded in UTF8,
> >then I
> >get wrong datatype error
> >
> >Is the solution for the application layer (not database) to convert
> >the
> >non-text UTF8 numbers to ASCII and then insert it into database ?
> >
> >Thanks
> >Medi
>
> Hi Medi,
>
> I have only limited experience in this area, but it sounds like you
> sending your numbers as strings? In your example:
>
> >create table t1 { name text, cost decimal };
>
> insert into t1 (name, cost) values ('name1', '1');
>
> I can't think of how else you're sending numeric values as UTF8? I know
> that Pg will accept numbers as strings and convert internally (that has
> worked for me in some object relational environments where I don't
> choose to cope with data types), but I think it would be better if you
> simply didn't send your numeric data in quotations, whether as UTF8 or
> ASCII. If you don't have control over this layer (that quotes your
> values), then I'd say converting to ASCII would solve the problem. But
> better to convert to numeric and not ship quoted strings at all.
>
> I may be totally off-base and missing something fundamental and I'm
> very open to correction (by anyone), but that's what I can see here.
>
> Best regards,
>
> Steve