SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 2)
    Identifier user_id
    Function count (alias count) (children 1)
     ExpressionList (children 1)
      Identifier user_id
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier my_first_table
   Function and (children 1)
    ExpressionList (children 2)
     Function greater (children 1)
      ExpressionList (children 2)
       Identifier timestamp
       Literal UInt64_0
     Function in (children 1)
      ExpressionList (children 2)
       Identifier user_id
       Literal UInt64_101
   Literal UInt64_2
   ExpressionList (children 1)
    Identifier user_id
