"""TZ offsets in data sources

Revision ID: 2929af7925ed
Revises: 1e2841a4128
Create Date: 2015-10-19 20:54:00.565633

"""

# revision identifiers, used by Alembic.
revision = '2929af7925ed'
down_revision = '1e2841a4128'

from alembic import op
import sqlalchemy as sa

def upgrade():
    op.add_column('datasources', sa.Column('offset', sa.Integer(), nullable=True))
    op.add_column('tables', sa.Column('offset', sa.Integer(), nullable=True))


def downgrade():
    op.drop_column('tables', 'offset')
    op.drop_column('datasources', 'offset')