Обсуждение: MaxIndexAttributeNumber limit

Hi all,
I see that MaxIndexAttributeNumber is set to 7 in itup.h and
memutils.h.

However, I would like to use a unique index with 8 fields.
Can I just change these defines and recompile, or is there
a reason for this limit on index tuple index attributes?

Cheers
Anthony
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> Hi all,
> I see that MaxIndexAttributeNumber is set to 7 in itup.h and
> memutils.h.
>
> However, I would like to use a unique index with 8 fields.
> Can I just change these defines and recompile, or is there
> a reason for this limit on index tuple index attributes?

Indexed fields are stored in an int28 column, which holds eight int2
values which are the attribute numbers.  Changing that is more work,
because you have to change all their support functions.



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