SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function plus (alias s) (children 1)
     ExpressionList (children 2)
      Identifier t
      Literal UInt64_1
   ExpressionList (children 1)
    Identifier t
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier s
     Literal \'2020-01-01 01:01:01\'
