Re: AW: pg_index.indislossy

Added to pg_index.h file as a comment.

> 
> > > > Can someone tell me what we use indislossy for? 
> 
> Ok, so the interpretation of this field is:
>     A match in the index needs to be reevaluated in the heap tuple data,
>     since a match in the index does not necessarily mean, that the heap tuple
>     matches.
>     If the heap tuple data matches, the index must always match.
> 
> A very typical example for such an index is a hash index. This might explain the 
> fact, that the ODBC driver misinterpreted that field as meaning that the index is a hash.  
> The field has nothing to do with partial index.
> 
> Andreas
> 

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