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12 statements  

1# Copyright (C) 2020 Bloomberg LP 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# <http://www.apache.org/licenses/LICENSE-2.0> 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14 

15"""Add a deleted flag for Indexed CAS entries 

16 

17Revision ID: 69ceb5938c06 

18Revises: e287a533bbd7 

19Create Date: 2020-03-31 13:45:29.641272 

20 

21""" 

22from alembic import op 

23import sqlalchemy as sa 

24 

25 

26# revision identifiers, used by Alembic. 

27revision = '69ceb5938c06' 

28down_revision = 'e287a533bbd7' 

29branch_labels = None 

30depends_on = None 

31 

32 

33def upgrade(): 

34 with op.batch_alter_table('index') as batch_op: 

35 batch_op.add_column(sa.Column('deleted', sa.Boolean(), nullable=False, server_default=sa.false())) 

36 

37 

38def downgrade(): 

39 op.drop_column('index', 'deleted')