oracle 储存过程 每天凌晨 更新sequence 从0 开始

CREATE OR REPLACE PROCEDURE seq_reset AS

n NUMBER(10);

tsql VARCHAR2(100);

BEGIN

EXECUTE IMMEDIATE 'select SQD_LSH.nextval from dual'

INTO n;

n := - (n );

tsql := 'alter sequence SQD_LSH increment by ' || n;

EXECUTE IMMEDIATE tsql;

EXECUTE IMMEDIATE 'select SQD_LSH.nextval from dual'

INTO n;

tsql := 'alter sequence SQD_LSH increment by 1';

EXECUTE IMMEDIATE tsql;

END seq_reset;

先得到sequence的当前值，然后设置其步长为这个值的相反数，在执行nextval相当于减去已经增长的部分，使sequence重新归零，最后恢复步长为1.

然后 创建一个 job 设置成每天运行这个 存储过程即可