uwcssa <uwcssa(at)gmail(dot)com> writes:
> My program (indirectly) calls the following function twice,
> tuple = SearchSysCache(STATRELATT, ObjectIdGetDatum(relid),
> Int16GetDatum(colnum),  0, 0);
> The first time it assigns NULL to tuple, while the second time it
> assigns a valid pointer. Why is it like that?

You did an ANALYZE in between, perhaps?  That's the only operation
that puts new rows in pg_statistic.

			regards, tom lane

In response to

• SearchSysCache at 2007-01-02 21:31:25 from uwcssa

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