You are managing a database for a movie production company. The database includes information about actors, directors, movies, movie cast, and ratings.Write a query for updating the ratings of all movies directed by 'Lankesh' to a new rating of 3 in a database that contains information about actors, directors, movies, movie casts, and ratings.The following table is already created, and the records are inserted into the table.
Question
You are managing a database for a movie production company. The database includes information about actors, directors, movies, movie cast, and ratings.Write a query for updating the ratings of all movies directed by 'Lankesh' to a new rating of 3 in a database that contains information about actors, directors, movies, movie casts, and ratings.The following table is already created, and the records are inserted into the table.
Solution
Assuming that the database is structured in a way that the 'movies' table has a 'director' column and a 'ratings' column, you can use SQL (Structured Query Language) to update the ratings. Here is a step-by-step guide on how to write the query:
- Start with the UPDATE statement: This is the command that tells SQL you want to change something. In this case, you want to change something in the 'movies' table. So you start your query with:
UPDATE movies - Specify what you want to change using the SET statement: You want to change the 'ratings' to 3 for all movies directed by 'Lankesh'. So you add:
SET ratings = 3 - Specify the condition for the change using the WHERE statement: You only want to change the ratings for movies directed by 'Lankesh'. So you add:
WHERE director = 'Lankesh' - Put it all together: Your final SQL query should look like this:
UPDATE movies SET ratings = 3 WHERE director = 'Lankesh'
This query will update the ratings of all movies in the 'movies' table where the director is 'Lankesh' to 3.
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