Oracle對沒有主鍵的表分頁,Oracle主鍵表分頁

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Oracle對沒有主鍵的表分頁,Oracle主鍵表分頁

一般情況對於有主鍵,能夠做唯一表識的表,我們可以利用主鍵和rownum配合實現,例如:

select scott.emp.* from scott.emp left join         (select empno id, rownum num from scott.emp) id_num         on scott.emp.empno = id_num.id where id_num.num between 5 and 10;

如果遇到沒有主鍵的表可以嘗試rowid代替,rowid不會因為排序或者查詢,甚至update都不會修改,因此可以藉助這個欄位作分頁。

select scott.emp.* from scott.emp left join     (select rowid id, rownum num from scott.emp)  id_num     on scott.emp.rowid = id_num.id where id_num.num between 5 and 10;

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