| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Ernest E Vogelsinger <ernest(at)vogelsinger(dot)at> |
| Cc: | "pgsql-admin" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: Q: Structured index - which one runs faster? |
| Date: | 2003-05-23 00:00:14 |
| Message-ID: | 12259.1053648014@sss.pgh.pa.us |
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| Lists: | pgsql-admin pgsql-general pgsql-performance |
Ernest E Vogelsinger <ernest(at)vogelsinger(dot)at> writes:
> Do you know if there's a general performance difference between numeric
> (int4) and character (fixed-size char[5]) columns? The ident1 and ident2
> columns are planned to be char[5], only the third column (with least
> precedence) will be numeric.
int4 is certainly faster to compare than char(n), but I wouldn't contort
your database design on that basis... if the idents aren't naturally
integers, don't force them to be.
regards, tom lane
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