基于条件的SQL INSERT

Question

I have a Song database that I have created using the Spotify Web API. At the moment my database has a table with the following columns; spotify_uri, key, tempo. The key column stores the songs key as an integer value Eg 0 = C, 1 = C♯/D♭, 2 = D, and so on.

If I create a new column called a_key, what would be the statement to insert the value "C" in to the a_key column where key=0 ?

Answer 1

Update table 
set a_key = 'C' 
where key = 0