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 ...

Overview SQL still leads, but newer query languages are rising fast in usage and demandGraph-based tools like Cypher and GQL are vital for modern, connected dat ...

Group Join so In db.SalesOrders Now, as with a SQL Join, you need to specify the criteria for matching up the objects from each collection. You have only one tool for matching objects: the LINQ Equals ...

SQL Server 2022 takes that ability a few steps further. Last year, I wrote a column on the introduction of query store hints into Azure SQL Database.