text: -- file:opr_sanity.sql ln:637 expect:true
  SELECT p1.oid, p1.oprname, p.amopfamily
  FROM pg_operator AS p1, pg_amop p
  WHERE amopopr = p1.oid
    AND amopmethod = (SELECT oid FROM pg_am WHERE amname = 'btree')
    AND amopstrategy = 3
    AND NOT p1.oprcanmerge
  