LCK_M*—This wait type happens when a query locks an object while another query is waiting to lock the same object. A common scenario is when a query is trying to modify a row while another query is ...

Dynamic SQL lets you create a query string based off of user input. SQL Server allows you to create dynamic SQL statements. The statements use a SQL string varchar data type, then you execute the ...

SQL data types. To learn more about SQL data types, read “SQL basics: String data types,” which covers general data-type usage and describes using the various string data types, and “SQL ...

SQL has dominated data querying for decades. Newer query languages offer more elegance, simplicity, and flexibility for modern use cases. For the last three decades, databases and Structured Query ...

SQL Server 2022 introduces CE feedback, which, based on the data collected in the query store, learns which CE model assumptions are valid over time for your queries.