A new MySQL gotcha

At least it's new for me, and it's not on the list. Bugged a colleague of mine today, and we were both very surprised for a while until we figured it out. Ok, it's not very complex, but the deal was that:

SELECT CAST(1 as CHAR)

works, but

SELECT CAST (1 as CHAR)

does not (syntax error!)

Now, CAST is already horribly limited in MySQL (who came up with the idea that you shouldn't be able to cast to all available types if it's reasonable to do the conversion?! Like from int to text...), but this is just too much. Since when does whitespace before a parenthesis matter in SQL?! Sheesh...

Yet another reason to prefer PostgreSQL...


Comments

Whitespace before parenthesis shouldn't matter, but MySQL allows reserved words to be table and field names, and the way it does that is by requiring no white space between the function name and its opening left paren.

Posted on Apr 1, 2010 at 00:46 by Joshua Kugler.

Conferences

I speak at and organize conferences around Open Source in general and PostgreSQL in particular.

Upcoming

SCALE+PGDays
Mar 2-5, 2017
Pasadena, California, USA
Open Source Infrastructure @ SCALE
Mar 2, 2017
Pasadena, California, USA
Confoo Montreal 2017
Mar 8-10, 2017
Montreal, Canada
Nordic PGDay 2017
Mar 21, 2017
Stockholm, Sweden
pgDay.paris 2017
Mar 23, 2017
Paris, France
PGCon 2017
May 23-26, 2017
Ottawa, Canada

Past

FOSDEM + PGDay 2017
Feb 2-4, 2017
Brussels, Belgium
PGConf.Asia 2016
Dec 2-3, 2016
Tokyo, Japan
Berlin PUG
Nov 17, 2016
Berlin, Germany
PGConf.EU 2016
Nov 1-4, 2016
Tallinn, Estonia
Stockholm PUG 2016/5
Oct 25, 2016
Stockholm, Sweden
More past conferences