摘自：http://www.itpub.net/96851.html

表dept, emp

要得到如下結果

deptno, dname, employees

---------------------------------

10, accounting, clark;king;miller

20, research, smith;adams;ford;scott;jones

30, sales, allen;blake;martin;james;turners

也就是，每個dept的employee串起來作為一條記錄返回。

怎么用一條sql語句完成?

答案如下：

/* Formatted on 2005/05/10 14:58 (Formatter Plus v4.8.5) */

SELECT deptno, dname, emps

FROM (SELECT d.deptno, d.dname,

RTRIM

( e.ename

|| ', '

|| LEAD (e.ename, 1) OVER (PARTITION BY d.deptno ORDER BY e.ename)

|| ', '

|| LEAD (e.ename, 2) OVER (PARTITION BY d.deptno ORDER BY e.ename)

|| ', '

|| LEAD (e.ename, 3) OVER (PARTITION BY d.deptno ORDER BY e.ename)

|| ', '

|| LEAD (e.ename, 4) OVER (PARTITION BY d.deptno ORDER BY e.ename)

|| ', '

|| LEAD (e.ename, 5) OVER (PARTITION BY d.deptno ORDER BY e.ename),

', '

) emps,

ROW_NUMBER () OVER (PARTITION BY d.deptno ORDER BY e.ename) x

FROM scott.emp e, scott.dept d

WHERE d.deptno = e.deptno)

WHERE x = 1

來自 “ ITPUB博客 ” ，鏈接：http://blog.itpub.net/267265/viewspace-82787/，如需轉載，請注明出處，否則將追究法律責任。

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