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