oracle中SQL修改序列

导入表数据时要修改表对应的序列值方法:

declare

 startValue number;

 num number;

seq_name varchar2(100) := 'SQN_POST_INFO'; --序列名称

 begin

--查出序列开始值

select max(nbi.POST_ID)+1 into startValue from POST_INFO nbi;

 --查序列是否存在,存在删除

 select count(1) into num from dba_objects db where db.Object_Type='SEQUENCE' AND db.object_name=seq_name;

if num > 0 then

EXECUTE IMMEDIATE 'drop sequence ' || seq_name;

end if;

--创建序列

EXECUTE IMMEDIATE 'create sequence ' || seq_name || ' minvalue 1 maxvalue 999999999999999999999999999 start with '|| startValue || ' increment by 1 cache 20'; end;