2、生成 pm_members 表基础数据
- INSERT INTO `pre_ucenter_pm_members` (plid, uid, isnew, lastupdate) SELECT plid, SUBSTRING_INDEX(min_max, '_', 1), 0, 0 FROM `pre_ucenter_pm_lists`;
- INSERT INTO `pre_ucenter_pm_members` (plid, uid, isnew, lastupdate) SELECT plid, SUBSTRING_INDEX(min_max, '_', -1), 0, 0 FROM `pre_ucenter_pm_lists`;
