警告: 不推荐使用过程 sp_mergecleanupmetadata。在 SQL Server 2000 SP1 和更高版本中，合并代理在每次运行时调用 sp_mergemetadataretentioncleanup，因此不需要手动清除元数据。将忽略传入的参数并调用 sp_mergemetadataretentioncleanup。

Warning: The procedure sp_mergecleanupmetadata has been deprecated. In SQL Server 2000 SP1 and later, the merge agent calls sp_mergemetadataretentioncleanup every time it runs, so manual cleanup of metadata is not needed. Ignoring passed-in parameters and calling sp_mergemetadataretentioncleanup.