Re: ORDER BY costs

Carlos Benkendorf <carlosbenkendorf(at)yahoo(dot)com(dot)br> writes:
> Table "iparq.arript"
> Column | Type | Modifiers
> -------------------+-----------------------+-----------
> anocalc | numeric(4,0) | not null
> cadastro | numeric(8,0) | not null
> codvencto | numeric(2,0) | not null
> parcela | numeric(2,0) | not null
> inscimob | character varying(18) | not null
> codvencto2 | numeric(2,0) | not null
> parcela2 | numeric(2,0) | not null
> codpropr | numeric(10,0) | not null
> dtaven | numeric(8,0) | not null
> anocalc2 | numeric(4,0) |

I suspect you'd find a significant performance improvement from changing
the NUMERIC columns to int or bigint as needed. Numeric comparisons are
pretty slow.

regards, tom lane