Re: Bug in pg_autovacuum ?

Cott Lang <cott(at)internetstaff(dot)com> writes:
> If the number of tuples is sufficiently high, pg reports 'reltuples'
> back in TABLE_STATS_QUERY in scientific notation instead of an integer.

Right, because that column is actually a float4.

> Changing from atoi() to atof() solves the problem completely.

> new_tbl->reltuples =
> atof(PQgetvalue(res, row, PQfnumber(res, "reltuples")));

> new_tbl->relpages =
> atof(PQgetvalue(res, row, PQfnumber(res, "relpages")));

I should think this would break in different ways once reltuples exceeds
INT_MAX. A full fix would require changing new_tbl->reltuples to be
float or double, and coping with any downstream changes that implies.

Also, relpages *is* an integer, though it's best interpreted as an
unsigned one. (Ditto for relid.) Looks like this code is 0-for-3 on
getting the datatypes right :-(

regards, tom lane