SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 6)
    Identifier t1.id
    Identifier t1.value
    Identifier t2.id
    Identifier t2.value
    Identifier t3.id
    Identifier t3.value
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table_join_1 (alias t1)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table_join_2 (alias t2)
     TableJoin
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_table_join_3 (alias t3)
     TableJoin
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL