Re: [Fwd: Re: [JDBC] Using char fields with 7.1.3 driver]
<[EMAIL PROTECTED]> writes: > Just I usually prefer using fixed field lengths as queries tend to be > significantly faster. Also, you can use them in indexes. You are making assumptions based on other databases that are not relevant to Postgres. > And it leads me to wonder how you would represent an ending "space" in a > field, In varchar or text fields, trailing spaces are real data. In fixed-width char fields, trailing spaces are pads. AFAIK this is consistent with the SQL92 specification. regards, tom lane ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [JDBC] Using char fields with 7.1.3 driver]
Well, that's how it works in the postgres documentation... I could have sworn that I've never encountered this in other databases.. Must have a bad memory. Guess I'll just trim everything. -Jeff > Hmm.. ok. > > Just I usually prefer using fixed field lengths as queries tend to be > significantly faster. Also, you can use them in indexes. > > I find it strange that that would be the case... > > And it leads me to wonder how you would represent an ending "space" in > a field, > > > for example > insert into names values(1,'This is a space'); > > for perhaps some sort of formatting or something otherwise. > > I'll try and find something in the postgres documentation to disable > this then I guess. > > > -Jeff > > Original Message > Subject: Re: [JDBC] Using char fields with 7.1.3 driver > From: "David Wall" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > > I'm not a JDBC expert, but this is pretty much the way I'd expect it to > work. If you a have fixed length field, then the field should return > that many characters. The varchar implies it's variable length, so > trailing spaces would then not be included. > > David > > > ---(end of > broadcast)--- TIP 3: if posting/reading through > Usenet, please send an appropriate subscribe-nomail command to > [EMAIL PROTECTED] so that your > message can get through to the mailing list cleanly > > > > > ---(end of > broadcast)--- TIP 1: subscribe and unsubscribe > commands go to [EMAIL PROTECTED] ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
[Fwd: Re: [JDBC] Using char fields with 7.1.3 driver]
Hmm.. ok. Just I usually prefer using fixed field lengths as queries tend to be significantly faster. Also, you can use them in indexes. I find it strange that that would be the case... And it leads me to wonder how you would represent an ending "space" in a field, for example insert into names values(1,'This is a space'); for perhaps some sort of formatting or something otherwise. I'll try and find something in the postgres documentation to disable this then I guess. -Jeff Original Message ---- Subject: Re: [JDBC] Using char fields with 7.1.3 driver From: "David Wall" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> I'm not a JDBC expert, but this is pretty much the way I'd expect it to work. If you a have fixed length field, then the field should return that many characters. The varchar implies it's variable length, so trailing spaces would then not be included. David ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [JDBC] Using char fields with 7.1.3 driver
> I can easily get around this using .trim(), but I'm wondering if that > should be in the jdbc driver itself (as I'll have to go through a bit of > code looking for string values being returned). char() is fixed length, varchar isn't. > > Or is this something in the database software itself that you can configure? > > > Also, Is there a "real" Website for the postgres jdbc driver? > http://jdbc.postgresql.org seems a little outdated. > > I wouldn't mind being able to grab the source for the driver and putting in > this small fix myself. http://jdbc.fastcrypt.com -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup.| Drexel Hill, Pennsylvania 19026 ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [JDBC] Using char fields with 7.1.3 driver
I'm not a JDBC expert, but this is pretty much the way I'd expect it to work. If you a have fixed length field, then the field should return that many characters. The varchar implies it's variable length, so trailing spaces would then not be included. David ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
