| 1234567891011121314151617181920212223242526 | """add capital relation to stateRevision ID: 0c526a49471cRevises: 42df131326b1Create Date: 2019-09-03 14:41:52.724530"""from alembic import opimport sqlalchemy as sa# revision identifiers, used by Alembic.revision = '0c526a49471c'down_revision = '42df131326b1'branch_labels = Nonedepends_on = Nonedef upgrade():    op.add_column('state', sa.Column('capital_id', sa.Integer(), nullable=True))    op.create_foreign_key(op.f('fk_state_capital_id_region'), 'state', 'region', ['capital_id'], ['id'])def downgrade():    op.drop_constraint(op.f('fk_state_capital_id_region'), 'state', type_='foreignkey')    op.drop_column('state', 'capital_id')
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