Stephen Frost <[email protected]> writes:
> * Andrew Dunstan ([email protected]) wrote:
>> I think I'd rather just say "for many data types" or something along
>> those lines, rather than imply that there is some obvious rule that
>> users should be able to intuit.
> Perhaps with a link to where the informaiton about which exist is
> available..? Or a query to get the list?
Queries for this sort of thing are covered in the chapter about index
opclasses. The basic query would be like
select opcintype::regtype from pg_opclass where opcmethod = 403 and opcdefault;
but I'm not sure if this is completely useful; it's not obvious for
example that the "text" opclass is also used for varchar. Another
point is that some of the operators aren't named in the conventional
way.
regards, tom lane
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