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Martin Kersten schreef:

For key-valued columns the max join result size is known.

/* foreign key joins are common */ if( l->ttype== TYPE_oid || r->htype == TYPE_oid || r->htype== TYPE_void) return MAX(lc,rc);

• if (l->tkey || r->hkey)

• return MAX(lc,rc);
  

Is there a reason not to merge this in the previous if?

Stefan