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Software ==> | SQL (203 exercises) |
Topic ==> | Temporary tables and table variables (13 exercises) |
Level ==> | Average difficulty |
Subject ==> | SQL training |
This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.
If you don't have a copy of the Music_01 database, follow the instructions at the following link to create it: www.wiseowl.co.uk/sql/exercises/standard/using-sql-server/5257/
Open the Variable Chart Floppers.sql file in the folder shown above. You'll find two queries to return lists of non-charting albums and singles.
Declare a table variable called @ChartFloppers with columns as shown in the table below:
Column name | Data type |
---|---|
Title | nvarchar(255) |
Artist | nvarchar(255) |
Release_date | date |
US_sales_(m) | float |
Release_type | nvarchar(6) |
Use INSERT statements to store the results of the two queries in the table variable.
Write a query to select everything from the table variable, sorting the results in descending order of Release_date.
The most recent non-charting releases.
Write another query which groups the rows in the table variable by Artist and Release_type and calculates the aggregate values shown below:
We've sorted the results in descending order of Count_releases.
Save and close the script.
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