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Asked: 2026-05-11T02:31:10+00:00

I have a 5 million row table that gets hit with a specific query

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I have a 5 million row table that gets hit with a specific query the most. So I want add a index to speed things up.

Query:

SELECT someID  FROM   someTable  WHERE         myVarChar = @myVarChar AND        MyBit = 0 AND         MyBit2 = 1 AND         MyBit3 = 0

Note, the myVarChar column is unique.

What would the best index be for this type of query? I currently have a single index that covers all of the 4 columns in the above query. Also, do I have to reindex every so often or its automatic?

I am using sql server 2008 standard.

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1 Answer

  1. Is someID the primary key of that table? If not, you should add it to your index to prevent a bookmark lookup.

    Also, look at the execution plan for that query, if your index is properly constructed, you should see two icons in the execution plan view: SELECT and an Index Seek.

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