ative query texts are kept in an external disk file, and do
   not consume shared memory.  Therefore, even very lengthy query texts can
   be stored successfully.  However, if many long query texts are
   accumulated, the external file might grow unmanageably large.  As a
   recovery method if that happens, <code class="filename">pg_stat_statements</code> may
   choose to discard the query texts, whereupon all existing entries in
   the <code class="structname">pg_stat_statements</code> view will show
   nu