# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
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"""change_table_unique_constraint

Revision ID: b4456560d4f3
Revises: bb51420eaf83
Create Date: 2016-04-15 08:31:26.249591

"""
from alembic import op

# revision identifiers, used by Alembic.
revision = 'b4456560d4f3'
down_revision = 'bb51420eaf83'


def upgrade():
    try:
        # Trying since sqlite doesn't like constraints
        op.drop_constraint(
            'tables_table_name_key', 'tables', type_='unique')
        op.create_unique_constraint(
            '_customer_location_uc', 'tables',
            ['database_id', 'schema', 'table_name'])
    except Exception:
        pass


def downgrade():
    try:
        # Trying since sqlite doesn't like constraints
        op.drop_constraint(u'_customer_location_uc', 'tables', type_='unique')
    except Exception:
        pass
