Nando Theeßen

[NandoTheessen]

Exercises, Day 1

• Create a table called track that holds information about a music track. It should contain:
• Create a table called artist_album
• Run the queries in the file setup.sql. This will populate the tables.

Write Queries to:

• Show all albums.
• Show all albums made between 1975 and 1990.
• Show all albums whose names start with Super D.
• Show all albums that have no release year.
• Write SQL SELECT queries that:
• Show all track titles from Super Funky Album.
• Same query as above, but rename the column from title to Track_Title in the output.
• Select all album titles by Han Solo.
• Select the average year all albums were released.
• Select the average year all albums by Leia and the Ewoks were released.
• Select the number of artists.
• Select the number of tracks on Super Dubstep Album.

Exercises, Day 2

• Create a database for taking notes.
• What are the columns that a note table needs?
• If you have a timestamp field, how do you auto-populate it with the date?
• A note should have a foreign key pointing to an author in an author table.
• What columns are needed for the author table?

Write queries that:

• Insert authors to the author table.
• Insert notes to the note table.
• Select all notes by an author's name.
• Select author for a particular note by note ID.
• Select the names of all the authors along with the number of notes they each have. (Hint: GROUP BY.)
• Delete authors from the author table.
• Figure out what happens when you try to delete an author with an existing note?
  How can you prevent this? (answered in README line 137+138)
• Submit a file notes.sql with the queries that build (CREATE TABLE/INSERT) and query the database as noted above.