code: def downgrade():
      op.add_column(
          "table_columns", sa.Column("min", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "table_columns",
          sa.Column("count_distinct", sa.Boolean(), nullable=True),
      )
      op.add_column(
          "table_columns", sa.Column("sum", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "table_columns", sa.Column("max", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "table_columns", sa.Column("avg", sa.Boolean(), nullable=True)
      )
  
      op.add_column(
          "columns", sa.Column("min", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "columns",
          sa.Column("count_distinct", sa.Boolean(), nullable=True),
      )
      op.add_column(
          "columns", sa.Column("sum", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "columns", sa.Column("max", sa.Boolean(), nullable=True)
      )
      op.add_column(
          "columns", sa.Column("avg", sa.Boolean(), nullable=True)
      )
  
imports: import sqlalchemy
  from alembic import op
label_desc: Use image node_id 2 for calling a global function with example usage: downgrade() without return types