As the name suggests, docpre_nme contains PRE numbers.  This needs to be joined with FRAG_ROOT which contains NIDs.  So we need a conversion.
As the name suggests, docpre_nme contains PRE numbers.  This needs to
be joined with FRAG_ROOT which contains NIDs.  So we need a
conversion.

This fixes the error in the 1pagedoc.SF-2141012 test.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb