sqlalchemy.schema Index Example Code

Index is a class within the sqlalchemy.schema module of the SQLAlchemy project.

CheckConstraint, Column, CreateIndex, CreateTable, DDLElement, ForeignKey, ForeignKeyConstraint, PrimaryKeyConstraint, and Table are several other callables with code examples from the same sqlalchemy.schema package.

Example 1 from PyHive

PyHive (PyPI package information) is a set of DB-API and SQLAlchemy interfaces that make it easier to use Presto and Apache Hive with Python. Dropbox's engineering team created this code library, open sourced it and put it out under the Apache 2.0 license.

PyHive / pyhive / tests / sqlalchemy_test_case.py

# sqlalchemy_test_case.py
from __future__ import absolute_import
from __future__ import unicode_literals

import abc
import contextlib
import functools

import pytest
import sqlalchemy
from builtins import object
from future.utils import with_metaclass
from sqlalchemy.exc import NoSuchTableError
from sqlalchemy.schema import Index
from sqlalchemy.schema import MetaData
from sqlalchemy.schema import Table
from sqlalchemy.sql import expression


def with_engine_connection(fn):
    @functools.wraps(fn)
    def wrapped_fn(self, *args, **kwargs):
        engine = self.create_engine()
        try:
            with contextlib.closing(engine.connect()) as connection:
                fn(self, engine, connection, *args, **kwargs)
        finally:
            engine.dispose()
    return wrapped_fn


class SqlAlchemyTestCase(with_metaclass(abc.ABCMeta, object)):
    @with_engine_connection
    def test_basic_query(self, engine, connection):
        rows = connection.execute('SELECT * FROM one_row').fetchall()
        self.assertEqual(len(rows), 1)
        self.assertEqual(rows[0].number_of_rows, 1)  # number_of_rows is the column name
        self.assertEqual(len(rows[0]), 1)


## ... source file continues with no further Index examples...

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