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我需要用现有数据库将mYsql 5.1升级到5.5。当我在其他站点搜索时,我发现我们需要导出现有数据库的完整转储,升级后我们需要再次导入完整转储。现有数据库大小为超过 1 TB。如果我们尝试导出这个的转储,将需要更多时间。我们如何在不导出现有数据库的转储的情况下升级 mysql 5.5?