Michael Smith


Technical Article

Prioritize Missing Index Recommendations (2005)

To report indexes proposed by the database engine that have highest probable user impact.  Note that no consideration is given to 'reasonableness' of indexes-- bytes, overall size, total number of indexes on a table, etc.  Intended to provide targeted starting point for holistic evaluation of indexes.

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2007-08-17

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Technical Article

Prioritize Missing Index Recommendations 2 (2005)

This is an enhanced version of my previous script: Prioritize Missing Index Recommendations (2005).To aid in evaluation of whether the recommended index is reasonable, I have added :1. counts for key columns and the total columns of the recommended index  2. the length/bytes for both key and all columns  Note this is 'per row', not […]

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2007-08-17

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Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned?
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

See possible answers