CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration col (children 2)
    DataType IPv6
    Function STATISTICS (children 1)
     ExpressionList (children 1)
      Function uniq
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList
