.. _fwflag_add_phrase_table:
==================
--add_phrase_table
==================
Switch
======

--add_phrase_table

Description
===========

Adds constituent and phrase feature tables, extracted from a Stanford Parser constituency-parse table (built by :doc:`fwflag_add_parses`).

Argument and Default Value
==========================

No argument. Boolean switch, default: ``False``. Can be combined with :doc:`fwflag_sqrt`/:doc:`fwflag_anscombe`.

Details
=======

Requires a ``<message_table>_const`` (parse) table to already exist, built by :doc:`fwflag_add_parses`, which itself requires an external Stanford Parser installation (see the Install Stanford Parser section in :doc:`../../install`) — not something installable via pip.

**Known issue — also MySQL-only regardless of the above.** ``FeatureExtractor.addPhraseTable()`` checks for the parse table via ``mm.tableExists(...)``, a raw ``mysqlmethods`` call. Verified: fails immediately with ``sqlite3.OperationalError: near "show": syntax error`` under a SQLite corpus, before even reaching the "parse table missing" check.

Other Switches
==============

Required Switches:

* :doc:`fwflag_d`, :doc:`fwflag_c`, :doc:`fwflag_t`
* :doc:`fwflag_add_parses` (must be run first)

Example Commands
================

Requires MySQL and a prior ``--add_parses`` run — not runnable against the packaged SQLite ``dla_tutorial`` dataset:

.. code-block:: bash

	dlatkInterface.py -d dla_tutorial -t msgs -c user_id --add_parses
	dlatkInterface.py -d dla_tutorial -t msgs -c user_id --add_phrase_table