AlterQuery  t0 (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration key2 (children 2)
    DataType Int32
    Function dictGetOrDefault (children 1)
     ExpressionList (children 4)
      Literal \'d0\'
      Literal \'value\'
      Literal UInt64_0
      Literal UInt64_1
 Identifier t0
