怎麼樣重複使用同一個表

[ghostzhao]

比如說我現在有一張表叫做table1
我現在想把它複製4份再聯合起來查詢,比如說table2,table3,table4
然後寫這樣的sql
select * from tabl1,tabl2,table3,table4

[sunshareforever]

select

[sunshareforever]

select a.* from table1 a left join table b on ....
left join table3 c on .....
left join table4 d on .... where .....

[ghostzhao]

我怎麼才可以產生這些表呢

[lalakid]

select * from tabl4 as tabl1,tabl4 as tabl2,table4 tabl3,table4