Execution example::

  select Magazine --match_columns title --query 'WEB +'  --query_flags ALLOW_PRAGMA|ALLOW_COLUMN
  # [
  #   [
  #     -63, 
  #     1337566253.89858, 
  #     0.000355720520019531, 
  #     "Syntax error: <WEB +||>", 
  #     [
  #       [
  #         "yy_syntax_error", 
  #         "lib/grn_ecmascript.lemon", 
  #         78
  #       ]
  #     ]
  #   ]
  # ]
