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Thread: R: Case sensitivity? - I understood...

R: Case sensitivity? - I understood...

From
"dfx"
Date:
Dear Sirs,
 
I understood that I can create objects with Upper and Lower case but I have to reference it with double quotes (INSERT INTO "Accoglienza" ("IdAccoglienza") VALUES (15);" is ok)
 
The new question is: can I avoid the automatic conversion to lower case in Postgres? (it exist some parameter to adjust?)
 
Best regards.
 
D. Formenton
-----Messaggio originale-----
Da: dfx [mailto:dfx@dfx.it]
Inviato: martedì 27 dicembre 2005 15:55
A: 'pgsql-general@postgresql.org'
Oggetto: Case sensitivity?

Dear Sirs,
 
I have a little problem:
 
- Contest: Server side: Linux Fedora core 4 with PostgreSQL v. 8.0
                Client side: both Linux Fedora core 4 with pgAdmin III v. 1.4 and/or Windows 2000 server vith pgAdmin III v. 1.4
 
- I Made a table:

CREATE TABLE "Accoglienza"
(
  "IdAccoglienza" int4 NOT NULL DEFAULT nextval('public."Accoglienza_IdAccoglienza_seq"'::text),
  "IdCongresso" int4 NOT NULL DEFAULT 0,
CONSTRAINT "Accoglienza_Pk" PRIMARY KEY ("IdAccoglienza")
)
WITHOUT OIDS;
 
if I try "INSERT INTO Accoglienza (IdCongresso) VALUES (23)"
 
I get an error "ERROR:  la relazione "accoglienza" non esiste" (The relation "accoglienza does not exist")
 
please note the change of the case of "A" to "a";
 
if I rename the table to "accoglienza" the error disappear, but arise another error on "IdAccoglienza" that change in "idaccoglienza". (i.e. all converted to lower case)
 
The same error arise with window client and linux client.
 
How I can set case-insensitive the system, or avoid the conversion to lower case?
 
It depends on setting of pgAdmin or on setting of the server?
 
Thank you.
 

 
 
 
 
 

Re: R: Case sensitivity? - I understood...

From
Tony Caduto
Date:
You can't, you have to double qoute everything that has upper or mixed
case. It can become a huge PITA....

The easiest way to get around this is to use lower case for all your DDL
i.e. columns, tablenames etc.

There is no practical reason to use uppercase or mixed case excecpt for
purly visual reasons, i.e. it looks nice or it's easier to read.

I use all lower case and no one using my applications ever has to know.

I can see doing the mixed case if you where porting a large database
from some other system like MS SQL server and it would be a large task
to lower case everthing, but even then it's not that big of a deal to
switch to all lower case.

What I have done in these cases is to export the DDL from MS SQL server
to text files, then run the scripts in PGLA or similar, if nothing is
qouted Postgresql will convert everything for you, problem solved.

Hope this helps,

Tony Caduto
AM Software Design
http://www.amsoftwaredesign.com
Home of PG Lightning Admin for Postgresql


>
>     How I can set case-insensitive the system, or avoid the conversion
>     to lower case?
>
>     It depends on setting of pgAdmin or on setting of the server?
>
>     Thank you.
>