Another way we can use a subquery is to find a record that exactly matches the result of a subquery. An example of this would be finding the employee that has the highest salary, which is a common type of query no matter what data you have ( find the details of the row with the highest value ). To do this using a subquery, it would look like this: ...
How do I insert an image in a SQL query?
Insert Images into SQL Server Example In this example, we write a SQL Server Query to insert an image into the table using the OPENROWSET -- Query to Insert Images into SQL Server is: USE [SQLTEST] GO INSERT INTO [dbo].[SaveFiles] (Name, Files) SELECT 'Home Page 2', BulkColumn FROM OPENROWSET(BULK N'D:LOGOSHome Page.png', SINGLE_BLOB) image; ...
How do you write a correlated subquery in SQL?
One of the most common places to invoke a subquery is in the WHERE clause of a SELECT statement. The inner query may come from the same source or a different source as the outer SQL statement. When the inner query needs to be computed for each row in the outer query, then the inner query is a correlated subquery. ...
What is a scalar subquery in SQL?
This type of subquery is frequently used in the WHERE clause to filter the results of the main query. The subquery in our previous example is a scalar subquery, as it returns a single value (i.e. the average agency fee). Scalar subqueries can also be used in the main query’s SELECT statement. ...
