Dynamically Query a 100 Million Row Table-Efficiently
This article describes methods of creating dynamic queries without the use of dynamic SQL to efficiently access large tables.
This article describes methods of creating dynamic queries without the use of dynamic SQL to efficiently access large tables.
SQL Server database developers seem reluctant to use diagrams when documenting their databases. It is probably because it has, in the past, been difficult to automatically draw precisely what you want, other than a vast Entity-relationship diagram. However, you can do it without buying any third-party tool, just using some existing Java-based open-source tools; and can even automate it entirely, using SQL and PowerShell. Phil Factor shows how.
Diagnosing and resolving parallelism-related latching and blocking in SQL Server using DMV’s, the activity monitor, procedure execution plans, and index tuning.
Today we have a guest editorial from Andy Warren that looks at the decision to leave a job. Or not.
Ayo Olubeko talks through the improvements being made to SQL Server tooling in 2016.
Sometimes it's good to re-think how to write a query; set operations can provide performance benefits over 'straight SQL'. In this article, David Fitzjarrell takes a look at one such example in action.
As the title says, the clustered index doesn't have to the primary key and vice versa.
14th June, Londo, UK - Inside-SQL conference offers deep dives on a range of SQL Server topics, with tracks focusing on DBAs, Developers and BI.
Use the discount code "Redgate" for £40 off the price of a ticket.
Now, it is easy to provide professional-quality documentation for PowerShell cmdlets, and to keep it in sync when you make changes, whether they are written in PowerShell or C#. While this has always been easy to do in PowerShell, it was always painful to do in C# or VB because it meant having to build your own MAML file. Michael Sorens completes his three-part series by summarising, in a wallchart, how to go about it.
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By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
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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