SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    QualifiedAsterisk (children 1)
     Identifier t1
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t2
     TableJoin (children 1)
      Function and (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier t1.key
          Identifier t2.key
        Function or (children 1)
         ExpressionList (children 2)
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier t1.a
            Literal UInt64_2
          Function indexHint (children 1)
           ExpressionList (children 1)
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier t2.a
              Literal UInt64_2
 Identifier Null
