可拷贝以下sql到查询分析器执行

（云社区拷贝sql格式可能有问题，可先拷贝到这里格式化后再执行：https://tool.oschina.net/codeformat/sql）

--查询3个月之内没有登录过的用户  （可替换sql后面的90，即90天） 

select * from t_pm_user where fid in( SELECT fuserid FROM  (select fuserid,fusername,max(foccurtime) as lastLoginTime  from T_LOG_APP where fmethodalias_l2 ='用户登录' or fmethodalias_l2 = 'Portal登录' group by FUSERID,fusername) ss where DATEDIFF(dd, ss.lastLoginTime  , GETDATE()) >= 90);

--备份用户表 

select * into t_pm_user_bk220721 from t_pm_user; 

--确认下是否备份成功

select * from t_pm_user_bk220721;

 --将超过3个月未登录的用户禁用 

update t_pm_user set fforbidden = 1 where fid in( SELECT fuserid FROM  (select fuserid,fusername,max(foccurtime) as lastLoginTime  from T_LOG_APP where fmethodalias_l2 ='用户登录'  or fmethodalias_l2 = 'Portal登录' group by FUSERID,fusername) ss where DATEDIFF(dd, ss.lastLoginTime  , GETDATE()) >= 90);