How do you query a loop?

How do you query a loop?

Running a Query Inside the Loop

1. WHILE @Counter <= @MaxOscars.
2. BEGIN.
3. SET @NumFilms =
4. SELECT COUNT(*)
5. FROM tblFilm.
6. WHERE FilmOscarWins = @Counter.
7. SET @Counter += 1.
8. END.

How do you loop a query in SQL?

I am detailing answer on ways to achieve different types of loops in SQL server.

1. FOR Loop. DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’;
2. DO.. WHILE Loop.
3. REPEAT..UNTIL Loop.

How to run SQL queries in a loop?

This part of the series will show you how to use a loop to execute a query multiple times, using a different value in the WHERE clause of the query each time. To demonstrate this technique we’re going to list the number of films which have won different numbers of Oscars. The output we’re aiming for is shown in the diagram below:

How to run a query multiple times in owl?

Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings. This part of the series will show you how to use a loop to execute a query multiple times, using a different value in the WHERE clause of the query each time.

When to use set based or loop based SQL?

If you can achieve the same results using either a set-based operation or a loop, the set-based method will almost certainly be quicker (our live two-day online advanced SQL course explains the set-based alternatives possible). There will be times, however, when a loop is pretty much the only way to get the job done.

How is the counter variable used in a loop?

The @Counter variable is used to keep track of the number of times the loop has run, as it did in the previous example. The @MaxOscars variable is used to hold the highest number of Oscar wins for a single film, which will tell us when to stop looping.