Any chance you can send a non-anonymized plan, and table structure? Are both distincts necessary (e.g. there will really be duplicates of those narrow column sets)?
The real question, IMO, is not HOW to turn an index scan into an index seek. The real question is whether you want to. And at this point I am pretty sure the answer is no.
It's hrd to draw many conclusion from what you posted because (a) it is anonymized which hides a lot of helpful information; and (b) it is an estimated plan only so we cannot see if there are any critical mis-estimates. But I do see that the estimated number of rows is equal to the table cardinality, which matches the absence of a WHERE clause anywhere in the query,
In other words: your query directs SQL Server to read all rows in the entire table. An index scan is far more efficient for that than an index seek.
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Answers and Comments
query plan x692
plan explorer upload x503
asked: Jan 16 at 06:11 PM
Seen: 455 times
Last Updated: Jan 17 at 09:25 AM
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