From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Ian Barwick <barwick(at)gmx(dot)net> |
Cc: | pgsql-hackers(at)postgresql(dot)org, nbazin(at)ingenico(dot)com(dot)au, Brent Verner <brent(at)rcfile(dot)org> |
Subject: | Re: [BUGS] Bug #581: Sequence cannot be deleted |
Date: | 2002-02-12 22:17:01 |
Message-ID: | 25046.1013552221@sss.pgh.pa.us |
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Lists: | pgsql-bugs pgsql-hackers |
Ian Barwick <barwick(at)gmx(dot)net> writes:
> Is there any reason for the default value (31 characters?),
It's historical AFAIK.
> or are there
> any performance issues associated with longer values?
Larger values would definitely waste space in the system tables (since
type name is fixed-width). Bigger system tables = more I/O = some
amount of slowdown. I have not heard that anyone has tried to measure
the cost. It might be negligible; we just don't know.
I believe we'd be happy to change the number as soon as someone does the
legwork to quantify what it's going to cost.
regards, tom lane
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