- 拼接的字符串长度满足varchar2(4000)时, 可以用
- LISTAGG(NAME, ‘_‘) WITHIN GROUP(ORDER BY LEVEL_T DESC)
- 当拼接大段文本时,采用 10g增加的函数 COLLECT函数
- http://www.oracle-developer.net/display.php?id=306
CREATE OR REPLACE TYPE tab_varchar2 AS TABLE OF VARCHAR2(4000) SELECT deptno, CAST(COLLECT(ename) AS tab_varchar2) AS emps FROM emp GROUP BY deptno; -- tab_varchar2 表示 varchar2(4000)的数组
- http://www.oracle-developer.net/display.php?id=306
时间: 2024-08-08 16:43:58