Frequent question: What is DMV and DMF in SQL Server?

What is the difference between DMV and DMF in SQL Server?

Although DMV and DMF seem like the same in SQL Server, the difference between them can be directly queried as the name of DMV, whereas DMF are functions that take a parameter and return a table accordingly. … All DMV and DMF available in SQL Server can be queried with the following query.

What is DMV SQL Server?

“DMVs” are query structures built into SQL Server that deliver details about server and database health/performance. DMVs provide a common mechanism to extract “all things SQL” as well as Windows OS performance data. There are multiple DMV categories that return configuration information and performance data.

What is DMV query?

Analysis Services Dynamic Management Views (DMVs) are queries that return information about model objects, server operations, and server health. … DMV queries return information about server and object state at the time the query is run. To monitor operations in real-time, use tracing instead.

What are DMVs in SQL Server and name two of them that will you use to find out long running queries or stored procedures?

sys. dm_exec_requests and sys. dm_exec_query_stats are used to identify long running queries or slow queries.

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What are 2 differences between delete and truncate?

Delete vs Truncate

SQL Delete SQL Truncate
It removes rows one at a time. It removes all rows in a table by deallocating the pages that are used to store the table data
It retains the identity and does not reset it to the seed value. Truncate command reset the identity to its seed value.

What is SQL Server Profiler used for?

Use SQL Server Profiler

Microsoft SQL Server Profiler is a graphical user interface to SQL Trace for monitoring an instance of the Database Engine or Analysis Services. You can capture and save data about each event to a file or table to analyze later.

How do I check my ssas sessions?

To manage sessions and connections, use Dynamic Management Views (DMVs) and XMLA: In SQL Server Management Studio, connect to an Analysis Services instance. Press F5 to execute the query. The DMV query returns session and connection information in a tabular result set that is easier read and copy from.

What are the types of views in SQL?

There are 2 types of Views in SQL: Simple View and Complex View. Simple views can only contain a single base table. Complex views can be constructed on more than one base table.