Database systems such as SQL/Server are getting an immense set of features these days, to the point where its impossible to be an expert in all areas. However a lot of the basics are similar to what they were 20 years ago. These basics are an area where a lot of software companies get it […]
Following on from my recent post on the subject, I was unhappy with the conclusion of that post, because while I was offering many ways to solve the problem, I wasn’t happy with the code. Connecting to a database should be simple? Well to be fair to Sql/Server it is, but there are numerous ways […]
I had a problem with a C# Winforms application recently that uses EF and some ADO.NET code to access SQL/Server. The customer wanted to use Active Directory to set up the users for this system. There are two ways of doing this: Define the AD users in SQL Server Management Studio (SSMS), assigning these to […]
I came across an interesting problem this week. The requirement was to get row counts from two different tables and return these on the same row. The tables had a common column, lets call it category. The first thought was to use GROUP BY in T-SQL, but there is a problem with this:
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1 2 |
SELECT a.Category, COUNT(a.*), b.Category, COUNT(b.*) FROM TableA a INNER JOIN TableB b ON b.Category = a.Category |
The […]
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