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Re: Identifier gets truncated

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On Thu, Jan 10, 2013 at 03:36:32PM +0100, Peter Kroon wrote:
> When an identifier has more then 63 chars it gets truncated.
> This is fine.
> However PostgreSQL fails to notice that it might truncate to an identifier
> which already exist.
> Does PostgreSQL got a setting that will never create a duplicate identifier?
> 
> really_long_name_table_A -> really_long_na
> really_long_name_table_B -> really_long_na

Well, if an indenfier truncates to a name that conflicts with another
one, you will get an error:

 test=> create table test(
 test(> x1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 int,
 test(> x1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112 int);
 NOTICE:  identifier "x1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111" will be truncated to "x11111111111111111111111111111111111111111111111111111111111111"
 NOTICE:  identifier "x1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112" will be truncated to "x11111111111111111111111111111111111111111111111111111111111111"
 ERROR:  column "x11111111111111111111111111111111111111111111111111111111111111" specified more than once

-- 
  Bruce Momjian  <bruce@xxxxxxxxxx>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +


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