SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function WIDTH_BUCKET (children 1)
     ExpressionList (children 4)
      Literal UInt64_5
      Identifier low
      Literal UInt64_5
      Identifier count
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier mytable
   Function notEquals (children 1)
    ExpressionList (children 2)
     Identifier count
     Literal UInt64_0
