import sqlalchemy as sa
from alembic import op

revision = '003'
down_revision = '002'
branch_labels = None
depends_on = None

def upgrade():
    op.add_column('tax_documents', sa.Column('fetch_strategy', sa.String(20), nullable=True, server_default='normal'), schema='data_center')

def downgrade():
    op.drop_column('tax_documents', 'fetch_strategy', schema='data_center')