Question

以下查询失败。如何纠正我需要将TBL_PLANNING_REPOSITORY中的最大ID放在创建序列中以。

开头

CREATE sequence auto_id_planning_repo 
start with (select MAX(ID) from TBL_PLANNING_REPOSITORY) increment by 1;

Answer 1

使用动态sql。

DECLARE
   v_startwith   NUMBER;
BEGIN
   SELECT MAX (ID) INTO v_startwith FROM TBL_PLANNING_REPOSITORY;

   EXECUTE IMMEDIATE
      'create sequence auto_id_planning_repo  start with ' || v_startwith || ' increment by 1';
END;

Answer 2

DDL语句不能与DML表达式混合使用。正确的方法是这样的：

lock table tbl_planning_repository in exclusive mode;
var m number;
exec select max(id) into :m from tbl_planning_repository;
exec execute immediate 'create sequence ... start with ' || :m || ' increment by 1';

无法将Query放入Create sequence sql中

2 个答案: