AlterQuery  test (children 2)
 ExpressionList (children 2)
  AlterCommand ADD_COLUMN (children 2)
   ColumnDeclaration b (children 1)
    DataType Float64
   Identifier a
  AlterCommand MODIFY_ORDER_BY (children 1)
   Function tuple (children 1)
    ExpressionList (children 2)
     Identifier a
     Identifier b
 Identifier test
