A temporary table in SQL Server is a special type of table that is stored in the tempdb database and exists only for the duration of the connection or the user session. They are used to store intermediate results of complex queries and are not permanent like regular tables. Here is an example of creating…
A subquery in SQL Server is a query within a query. It is used to retrieve data from one table based on the data from another table. Here is an example of a subquery in SQL Server: In this example, the subquery SELECT AVG(Salary) FROM Employees retrieves the average salary of all employees. The main…
In SQL Server, the difference between nvarchar and ntext data types is their maximum storage capacity and their usage. nvarchar is a variable-length, Unicode data type that can store up to 4,000 characters.ntext is a variable-length, Unicode data type that can store large amounts of text data, up to 2^30-1 characters (1 GB).The nvarchar data…
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