CreateQuery t_update_empty_nested (children 3)
 Identifier t_update_empty_nested
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration nested.arr1 (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt64
 Storage definition (children 3)
  Function MergeTree
  Identifier id
  Set
