Scripts

Technical Article

Find Tables that need Statistics Update

Indexes and table Statistics play a big role in an OLTP database for better query performance. Maintaining statistics on a weekly basis is important but a heavily updated database tables need more emphasis on Statistics and frequent updates. Instead of trying to issue “sp_updatestats” for the entire database, you can choose tables which are heavily […]

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2004-02-17

2,002 reads

Technical Article

Copy rows generator

This stored procedure is created from the need to copy rows from a table with new value. The script itself will create stored procedure proc_copyrows.The parameters are@TableName: the table name@FilterField: filter field, default is null, means no filter@SourceValue: the value of filter field from source data to be copied@DestinationValue: the new value of filter field@SourceDB: […]

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2004-02-13

273 reads

Technical Article

Global String Search & Replace In All DB Fields

Stored procedure to search every field in the database for a string literal.  Run the stored procedure in Query analyser, which will output sql statements to do the search.  The output of these searches will be the update sql, which again should be pasted into a query analyser window.  As the stored procedures do not […]

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2004-02-10

267 reads

Technical Article

SQL Server Log Reader

This script outputs the data in chronological order from the current SQL Server log.Output columns are: Log Entry Time, Event Source, Log Entry Text. This data matches with the data that can be seen under the SQL Server logs view in Enterprise Manager.The script is stand alone, but could easily be parameterised to work as […]

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2004-02-10

891 reads

Technical Article

XTAB - CROSSTAB UTILITY

sp_XTAB (prototype) produces pivoted (crosstab) views/output with a minimum of fuss.No messing with code, just tell XTAB what you want to pivot.Tested to 764 pivoted columns, XTAB can generate up to 63000 characters of dynamic sql. Example (deliberately over-simplified)----------------------updated 27 January 2004Use NorthwindEXEC sp_XTAB 'Northwind','xtEMPL_COUNTRY','Orders','EmployeeID','ShipCountry', '', 'OrderID','COUNT','NULL', '', 'SELECT xtEMPL_COUNTRY.* FROM xtEMPL_COUNTRY' -- Include optional […]

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2004-01-24

399 reads

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Question of the Day

Getting the Average

I have this data in the dbo.Commission table in a SQL Server 2022 database.

salesperson commission
Brian       12
Brian       16
Andy        7
Andy        14
Andy        21
Steve       20
Steve       NULL
All the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
     , AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
 FROM commission
 GROUP BY SalesPerson
GO
What average commission is calculated for Steve?

See possible answers