On Fri, Mar 31, 2017 at 1:24 PM, Andres Freund <and...@anarazel.de> wrote:
> The covering indexes patch [1] really needs a version of
> heap_form_tuple/index_form_tuple that allows to specify the number of
> columns in the to-be generated tuple.  Previously the faster expression
> evaluation stuff could also have benefited form the same for both
> forming and deforming tuples.
> It's obviously trivial to add, codewise.
> I think for index_form_tuple we can just add a parameter, but for
> heap_form_tuple/heap_deform_tuple that'd probably break a number of
> external users.  How about adding _ex variants that allow to specify
> that?

I think our usual practice is _extended rather than just _ex, but no
objections otherwise.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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