Secret Mysteries Of SQL Server 2017

Erik Darling goes spelunking for new and modified internal objects in SQL Server 2017:

sys.dm_db_missing_index_group_stats

sys.dm_db_missing_index_group_stats
What have we here?

 

Of particular interest are last_sql_handle, query_hash, and query_plan_hash. It appears that we’ll finally be able to easily tie missing index requests to their queries, without doing a lot of painful XML processing. I had planned on adding something like this, but couldn’t find a good fit between 1) adding XML processing to sp_BlitzIndex, or adding more DMV queries and rather unpleasant XML processing to sp_BlitzCache. This will make implementing it far easier, assuming it works the way it looks like it will work.

Erik has three examples of interesting additions in CTP 2.0.

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