SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    QualifiedAsterisk (children 1)
     Identifier tab2
    QualifiedAsterisk (children 1)
     Identifier tab3
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab2
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier tab3
     TableJoin (children 1)
      Function or (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier b2
          Identifier b3
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier a2
          Identifier a3
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL
