48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
# Copyright 2016 Rackspace
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# Copyright 2013 Intel Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""add index on created_at and updated_at columns of 'images' table
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Revision ID: mitaka01
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Revises: liberty
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Create Date: 2016-08-03 17:19:35.306161
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"""
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from alembic import op
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from sqlalchemy import MetaData, Table, Index
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# revision identifiers, used by Alembic.
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revision = 'mitaka01'
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down_revision = 'liberty'
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branch_labels = None
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depends_on = None
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CREATED_AT_INDEX = 'created_at_image_idx'
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UPDATED_AT_INDEX = 'updated_at_image_idx'
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def upgrade():
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migrate_engine = op.get_bind()
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meta = MetaData(bind=migrate_engine)
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images = Table('images', meta, autoload=True)
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created_index = Index(CREATED_AT_INDEX, images.c.created_at)
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created_index.create(migrate_engine)
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updated_index = Index(UPDATED_AT_INDEX, images.c.updated_at)
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updated_index.create(migrate_engine)
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