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"""Add avg() to default metrics

Revision ID: ad4d656d92bc
Revises: b46fa1b0b39e
Create Date: 2016-10-25 10:16:39.871078

"""

# revision identifiers, used by Alembic.
revision = 'ad4d656d92bc'
down_revision = '7e3ddad2a00b'

from alembic import op
import sqlalchemy as sa


def upgrade():
    op.add_column('columns', sa.Column('avg', sa.Boolean(), nullable=True))
    op.add_column('table_columns', sa.Column('avg', sa.Boolean(), nullable=True))

def downgrade():
  with op.batch_alter_table('columns') as batch_op:
    batch_op.drop_column('avg')
  with op.batch_alter_table('table_columns') as batch_op:
    batch_op.drop_column('avg')
