The user performing the merge must have exemptions granted or the appropriate label granted to perform the merge successfully.
执行 merge 的用户必须取得豁免，或者具有相应的标签，才能成功执行 merge。
Merge history allows this and makes things more convenient. The workaround is simply to use a label to mark the point of your last merge.
合并历史就允许这样做，并且很便利。工作区里面会简单的使用一个标签来标示你上一次合并的点。
The merge statement can be applied on label-based access control (LBAC) tables.
merge 语句可被应用到基于标签的访问控制（LBAC）表中。
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