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path: root/django/core/management/commands/sql.py
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from __future__ import unicode_literals

from django.core.management.base import AppCommand
from django.core.management.sql import sql_create
from django.db import DEFAULT_DB_ALIAS, connections


class Command(AppCommand):
    help = "Prints the CREATE TABLE SQL statements for the given app name(s)."

    output_transaction = True

    def add_arguments(self, parser):
        super(Command, self).add_arguments(parser)
        parser.add_argument('--database', default=DEFAULT_DB_ALIAS,
            help='Nominates a database to print the SQL for. Defaults to the '
                 '"default" database.')

    def handle_app_config(self, app_config, **options):
        if app_config.models_module is None:
            return
        connection = connections[options['database']]
        statements = sql_create(app_config, self.style, connection)
        return '\n'.join(statements)