SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    QualifiedAsterisk (children 1)
     Identifier t
    QualifiedAsterisk (children 1)
     Identifier s
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier s
     TableJoin (children 1)
      Function and (children 1)
       ExpressionList (children 3)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier s.a
          Identifier t.a
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier t.b
          Identifier s.b
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier t.a
          Function toInt64 (children 1)
           ExpressionList (children 1)
            Literal UInt64_2
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier t.a