Recently we started using sp_BlitzCache to help us tune our queries. We found one SP that had some issues with it and we were able to refactor it successfully.
I have a copy of the output of sp_BlitzCache taken during the week before we tuned the query, it is available here
The command run to generate this output was
exec sp_BlitzCache @StoredProcName = 'hs_UpdateShipmentPackagesAndWeightSp'
1) I noticed that we have multiple rows for the same plan handle, why is that?
2) You'll notice that the highest cost query (1451) has a query text of the entire create procedure statement, what does that mean? Are the metrics for this row just for the creation of the stored procedure?
3) For the highest cost row, the one referenced above, it has a Min/Max grant of almost 2GB. Does that mean that when we run the create procedure statement it asked for 2gb of memory? Or is this plan being used when the proc is called ? I suppose this ties into the answer from question 2
4) Why in some cases we have Min/Max grant KB > 0 and Min/Max used grant kb > 0, but percent memory grant used is null ?
We are running SQL Server 2012.