Scripts

Technical Article

Detection of Broken Forign Key Relationship

Under special circumstances, it could happen that database contains "orphan" records. Data in dependant table exists without it's "parent" record in a master table. It could be caused by a bulk insert operation without CHECK_CONSTRAINTS option, or by disabling foreign key for a while or adding a foreign key to a table that already contains […]

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2002-03-27

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Technical Article

Script Generator for Triggers

This Stored Procedure creates the script of all existing triggersOptionally it creates the script to drop the triggers too.Triggers may belong to different owners. This procedure takes care of it.In SQLServer Enterprise Manager there is a facility to generate scripts forTables, Views, Stored Procedures etc.But it won't generate script for triggers unless we include the […]

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2002-03-27

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Technical Article

spAuditPasswords

This script is actually part of an article written about performing a simple password audit on SQL Server logins when you start to administor a new SQL Environment. The script will scan the sysxlogins table located in the master database for SQL Server logins with no passwords, passwords that are the same as the login […]

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2002-03-27

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Technical Article

Compare the structure & code of 2 databases

We often make changes in the test databases. But failure in making even the smallest change in the production database may lead to unwanted situations.This utility compares 2 databases.Parameters to be passed   @DB1  Database 1 (SysName)  @DB2  Databse 2 (SysName)  @ShowDifferentOnly see later (Bit)       Parameters 1, 2 may include server name as  well. […]

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2002-03-22

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Technical Article

Use DELETE On Many Tables With Foreign Keys

When deleting data from many tables, foreign key constraints can force you to specifically order your DELETE commands. This can take tons of time, especially if you have many tables.  Here's a technique I use to delete data in the correct order during the restaging of test databases.It makes use of the system stored procedure […]

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2002-03-22

1,626 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