Added 'How do I add database-specific options to my CREATE TABLE statements,...

       absolute URL to your image in a template with

       ``{{ object.get_mug_shot_url }}``.

Databases and models

====================

How can I see the raw SQL queries Django is running?

----------------------------------------------------

Make sure your Django ``DEBUG`` setting is set to ``True``. Then, just do

this::

    >>> from django.db import connection

    >>> connection.queries

    [{'sql': 'SELECT polls_polls.id,polls_polls.question,polls_polls.pub_date FROM polls_polls',

    'time': '0.002'}]

``connection.queries`` is only available if ``DEBUG`` is ``True``. It's a list

of dictionaries in order of query execution. Each dictionary has the following::

    ``sql`` -- The raw SQL statement

    ``time`` -- How long the statement took to execute, in seconds.

``connection.queries`` includes all SQL statements -- INSERTs, UPDATES,

SELECTs, etc. Each time your app hits the database, the query will be recorded.

Can I use Django with a pre-existing database?

----------------------------------------------

Yes. See `Integrating with a legacy database`_.

.. _`Integrating with a legacy database`: http://www.djangoproject.com/documentation/legacy_databases/

If I make changes to a model, how do I update the database?

-----------------------------------------------------------

as the admin interface to work; e.g., you need a simple way of being able to

specify an object to edit or delete.

The database API

================

How do I add database-specific options to my CREATE TABLE statements, such as specifying MyISAM as the table type?

------------------------------------------------------------------------------------------------------------------

How can I see the raw SQL queries Django is running?

----------------------------------------------------

We try to avoid adding special cases in the Django code to accomodate all the

database-specific options such as table type, etc. If you'd like to use any of

these options, create an `SQL initial data file`_ that contains ``ALTER TABLE``

statements that do what you want to do. The initial data files are executed in

your database after the ``CREATE TABLE`` statements.

Make sure your Django ``DEBUG`` setting is set to ``True``. Then, just do

this::

For example, if you're using MySQL and want your tables to use the MyISAM table

type, create an initial data file and put something like this in it::

    >>> from django.db import connection

    >>> connection.queries

    [{'sql': 'SELECT polls_polls.id,polls_polls.question,polls_polls.pub_date FROM polls_polls',

    'time': '0.002'}]

    ALTER TABLE myapp_mytable ENGINE=MyISAM;

``connection.queries`` is only available if ``DEBUG`` is ``True``. It's a list

of dictionaries in order of query execution. Each dictionary has the following::

As explained in the `SQL initial data file`_ documentation, this SQL file can

contain arbitrary SQL, so you can make any sorts of changes you need to make.

    ``sql`` -- The raw SQL statement

    ``time`` -- How long the statement took to execute, in seconds.

``connection.queries`` includes all SQL statements -- INSERTs, UPDATES,

SELECTs, etc. Each time your app hits the database, the query will be recorded.

Can I use Django with a pre-existing database?

----------------------------------------------

Yes. See `Integrating with a legacy database`_.

.. _`Integrating with a legacy database`: http://www.djangoproject.com/documentation/legacy_databases/

.. _SQL initial data file: http://www.djangoproject.com/documentation/model_api/#providing-initial-sql-data

Why is Django leaking memory?

-----------------------------