oracle 行列转换 WMSYS.WM_CONCAT

select t.rank, t.Name from t_menu_item t;

    10 CLARK
    10 KING
    10 MILLER
    20 ADAMS
    20 FORD
    20 JONES
    20 SCOTT
    20 SMITH
    30 ALLEN
    30 BLAKE
    30 JAMES
    30 MARTIN
    30 TURNER
    30 WARD

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我们通过 10g 所提供的 WMSYS.WM_CONCAT 函数即可以完成 行转列的效果

    select t.rank, WMSYS.WM_CONCAT(t.Name) TIME From t_menu_item t GROUP BY t.rank;

DEPTNO ENAME
------ ----------
    10 CLARK, KING, MILLER
    20 ADAMS, FORD, JONES, SCOTT, SMITH
    30 ALLEN, BLAKE, JAMES, MARTIN, TURNER, WARD

http://blog.csdn.net/tianlesoftware/article/details/4704858