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convert to a string

This is a discussion on convert to a string within the pgsql Sql forums, part of the PostgreSQL category; --> Hello i have a column N_GEN in postgreSql defined as text. In this coloumn i insert a number 10 ...


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  #1 (permalink)  
Old 04-19-2008, 03:10 PM
Shavonne Marietta Wijesinghe
 
Posts: n/a
Default convert to a string

Hello

i have a column N_GEN in postgreSql defined as text. In this coloumn i insert a number 10

N_GEN (text) = 10


on error resume next
Set oRs = oConn.Execute("SELECT N_GEN FROM MyTable ORDER BY N_GEN DESC")
If err <> 0 then 'If table not found
GetFieldValue = "1"
else
GetFieldValue = oRs("N_GEN") + 1
End If

But it doesn't add the 1 to my N_GEN
How can i set the Recordset to convert the string to a number and then add 1 to it??

Shavonne Wijesinghe
http://www.studioform.it



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  #2 (permalink)  
Old 04-19-2008, 03:10 PM
A. Kretschmer
 
Posts: n/a
Default Re: convert to a string

am Tue, dem 06.03.2007, um 14:42:53 +0100 mailte Shavonne Marietta Wijesinghe folgendes:
> Hello
>
> i have a column N_GEN in postgreSql defined as text. In this coloumn i insert a
> number 10


Why do you store numbers as text?


>
> N_GEN (text) = 10
>
>
> on error resume next
> Set oRs = oConn.Execute("SELECT N_GEN FROM MyTable ORDER BY N_GEN DESC")
>
> But it doesn't add the 1 to my N_GEN


You can't add a number to a string.


> How can i set the Recordset to convert the string to a number and then add 1 to
> it??


You can try to cast it to int:

test=# select '10'::text;
text
------
10
(1 row)

test=*# select '10'::text::int;
int4
------
10
(1 row)


In your Query, change 'SELECT N_GEN FROM' to 'SELECT N_GEN::int FROM'.


Andreas
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  #3 (permalink)  
Old 04-19-2008, 03:10 PM
Shavonne Marietta Wijesinghe
 
Posts: n/a
Default Re: convert to a string

when i try the
set oRs = oConn.Execute("SELECT N_GEN::int FROM MyTable ORDER BY N_GEN DESC")
it returns 1 and for the rest i doens't change. alsways 10

----- Original Message -----
From: Bart Degryse
To: pgsql-sql@postgresql.org
Sent: Tuesday, March 06, 2007 2:54 PM
Subject: Re: [SQL] convert to a string


I assume GetFieldValue is the name of a VB function or property get?

Try either
Set oRs = oConn.Execute("SELECT N_GEN::int FROM MyTable ORDER BY N_GEN DESC")
or
GetFieldValue = cint(oRs("N_GEN")) + 1
or
GetFieldValue = clng(oRs("N_GEN")) + 1

In the last two cases make sure that the function or property get returns an int or long
Also remember that if oRs("N_GEN") is NULL the sum will also be NULL

>>> "Shavonne Marietta Wijesinghe" <shavonne.marietta@studioform.it> 2007-03-06 14:42 >>>

Hello

i have a column N_GEN in postgreSql defined as text. In this coloumn i insert a number 10

N_GEN (text) = 10


on error resume next
Set oRs = oConn.Execute("SELECT N_GEN FROM MyTable ORDER BY N_GEN DESC")
If err <> 0 then 'If table not found
GetFieldValue = "1"
else
GetFieldValue = oRs("N_GEN") + 1
End If

But it doesn't add the 1 to my N_GEN
How can i set the Recordset to convert the string to a number and then add 1 to it??

Shavonne Wijesinghe
http://www.studioform.it



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  #4 (permalink)  
Old 04-19-2008, 03:10 PM
Bart Degryse
 
Posts: n/a
Default Re: convert to a string

As Andreas already asked: do you really have a good reason to store numbers as text
If so, show us some more information: table definition, some table data, a complete (vb?) function/property get, ... anything that is directly involved.


>>> "Shavonne Marietta Wijesinghe" <shavonne.marietta@studioform.it> 2007-03-06 15:32 >>>

when i try the
set oRs = oConn.Execute("SELECT N_GEN::int FROM MyTable ORDER BY N_GEN DESC")
it returns 1 and for the rest i doens't change. alsways 10



----- Original Message -----
From: Bart Degryse ( mailto:Bart.Degryse@indicator.be )
To: pgsql-sql@postgresql.org
Sent: Tuesday, March 06, 2007 2:54 PM
Subject: Re: [SQL] convert to a string

I assume GetFieldValue is the name of a VB function or property get?

Try either
Set oRs = oConn.Execute("SELECT N_GEN::int FROM MyTable ORDER BY N_GEN DESC")
or
GetFieldValue = cint(oRs("N_GEN")) + 1
or
GetFieldValue = clng(oRs("N_GEN")) + 1

In the last two cases make sure that the function or property get returns an int or long
Also remember that if oRs("N_GEN") is NULL the sum will also be NULL

>>> "Shavonne Marietta Wijesinghe" <shavonne.marietta@studioform.it> 2007-03-06 14:42 >>>

Hello

i have a column N_GEN in postgreSql defined as text. In this coloumn i insert a number 10

N_GEN (text) = 10




on error resume next
Set oRs = oConn.Execute("SELECT N_GEN FROM MyTable ORDER BY N_GEN DESC")
If err <> 0 then 'If table not found
GetFieldValue = "1"
else
GetFieldValue = oRs("N_GEN") + 1
End If

But it doesn't add the 1 to my N_GEN
How can i set the Recordset to convert the string to a number and then add 1 to it??

Shavonne Wijesinghe
http://www.studioform.it ( http://www.studioform.it/ )




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