Re: Allowing extensions to supply operator-/function-specific info - Mailing list pgsql-hackers

> On Feb 26, 2019, at 2:19 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> 
>> I have
>> created a table (foo) a geometry column (g) and an index (GIST on
>> foo(g)) and am running a query against foo using a noop function with
>> a support function bound to it.
> 
>> The support function is called, twice, once in
>> T_SupportRequestSimplify mode and once in T_SupportRequestCost mode.
> 
> What's the query look like exactly?  The other two calls will occur
> anyway, but SupportRequestIndexCondition depends on the function
> call's placement.

select geos_intersects_new(g, 'POINT(0 0)') from foo;

> 
>             regards, tom lane