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Editorial Team
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Asked: 2026-05-25T06:50:17+00:00

This is my query SELECT TOP 3 guid FROM eventlog WHERE (guid > 2291399

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This is my query

 SELECT TOP 3 guid FROM eventlog 
    WHERE (guid > 2291399 AND batch_uid = -1) ORDER BY date_created ASC

I’m running this qquery inside a stored procedure cursor about 25 times. Which causes the SP to run for 10 seconds plus.

Can someone advise me where I could optimize my query ?

I have tried the following indexes

CREATE INDEX eventlog_003 ON eventlog (batch_uid,date_created,guid);
CREATE INDEX eventlog_004 ON eventlog (date_created,guid);
CREATE INDEX eventlog_005 ON eventlog (guid,batch_uid,date_created ASC);
CREATE INDEX eventlog_006 ON eventlog (batch_uid,date_created ASC,guid);

Heres some stats.

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1 Answer

  1. Editorial Team

    It looks like most of the time is spent doing that index scan. I found some info in this question. In short, it is better to get the database to try and do an index seek rather than a scan (a scan requiring checking of fields in the table that aren’t in the index). It looks like one way you could reduce the time taken would be to create an ascending index on guid, batch_uid and date_created.

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