But the Database Worked in Development! Checking for Duplicates
As developers should not have access to production data, it’s possible that duplicate values can sneak in during migrations. In this article of the series, Phil Factor demonstrates a way to check for duplicates when unique constraints are disabled.
Stairway to U-SQL Level 1: Introduction to U-SQL and Azure Data Lakes
An introductory guide to querying files in Azure Data Lakes using Microsoft's U-SQL language.
Memory-Optimized TempDB Metadata in SQL Server 2019
For as long as I have worked with SQL Server, and on almost every system I've ever managed, tempdb has been a bottleneck in one way or another.
Introduction to Indexed Views in SQL Server
This article explains indexed views and provides an example that shows when they should be used to improve performance of a complex query.
Configure SQL Server Transparent Data Encryption with PowerShell
In this article Filip Holub looks at how to configure and enable transparent data encryption for a SQL Server database using PowerShell.
Monitor for errors in your SSAS, SSRS, SSIS, Agent and Full-Text services
Learn how to monitor for errors in your SSAS, SSRS, SSIS, Agent and Full-Text services
Deployment Suite for Oracle: What’s New?
Stephanie Herr describes the new features in the Deployment Suite for Oracle that will help you automate your database releases safely, on Linux or Windows.
Blogs
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Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
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Cognitive Coverage
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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 NULLAll 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