AlterQuery  test (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Literal UInt64_1
   ExpressionList (children 1)
    Assignment tt (children 1)
     Function tuple (children 1)
      ExpressionList (children 3)
       Literal UInt64_42
       Literal Array_[\'a\']
       Literal UInt64_42
 Identifier test
