You will fail to connect to your database if the SQL Server service is not running. If you try running the SQL Server service from the Services.msc app, you will ...
Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...
I'm using a EF Core 6 DbContext transaction to create/update entities on a SQL Server temporal table. The data I'm processing (array of items) has a key (Year-Sequential, like: 2023-001, 2023-002, etc ...
When designing objects in SQL Server, we must follow certain best practices. For example, a table should have primary keys, identity columns, clustered and unclustered indexes, data integrity and ...
An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception. Database engines like SQL Server are incredibly complex ...
A few days ago I was tagged on a thread on Twitter: my old pal Mim was upset to find that he couldn’t use a SQL query with a Common Table Expression as the source of a table in DirectQuery mode. He ...
The data type xml cannot be used as an operand to the UNION, INTERSECT or EXCEPT operators because it is not comparable. It doesn't matter whether the XML field is affected or not in the query.
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