Updating a view in sql server 2016

One of the objects you can create in a SQL Server database is a view, a virtual table that retrieves data from one or more tables (or other views), similar to how a SELECT statement returns a data set.SQL Server views abstract the underlying table schema while presenting data in rows and columns like a regular table.There are no performance benefits from using standard views; if the view definition contains complex processing and joins between huge numbers of rows from a combination of tables, and you are calling this view very frequently, performance degradation will be noticed clearly.

Views perform multi-tables reading too, causing huge amount of IO operations.SQL Server Views are virtual tables that are used to retrieve a set of data from one or more tables.The view’s data is not stored in the database, but the real retrieval of data is from the source tables.When you open either a linked table or the source object, you see the latest data.However, if any structural changes are made to a SQL Server object, you’ll need to update the linked table(s) to see those changes.Any structural changes to linked tables like removing or changing columns, have to be made from the SQL Server and not Access.If you see the Select Unique Record Identifier, it means that Access was unable to determine which field or fields uniquely identify each row of the source data.They are essentially named queries that provide a snapshot of the data returned by that query.Not only do SQL Server views let you focus and customize how you present the data, but they also provide an extra layer of security by abstracting the underlying data structure.But this functionality wasn’t extended to NCC indexes, which were still limited to snapshot mode only.With 2016, this limitation has been completely removed.


Leave a Reply