Add an UNIQUE constraint on song title.

[ccbs] / ccbs.sql

diff --git a/ccbs.sql b/ccbs.sql
index b52bfbf98afed88742ce06107d17d4d919c21ee2..e4a129f4ee631c60762afd4c727837d39c85b807 100644 (file)
--- a/ccbs.sql
+++ b/ccbs.sql
@@ -13,9 +13,11 @@ CREATE TABLE countries (
 CREATE TABLE songs (
        song SERIAL PRIMARY KEY,
        title VARCHAR NOT NULL,
-       artist VARCHAR NOT NULL
+       artist VARCHAR NOT NULL,
        minbpm INTEGER NOT NULL,
-       maxbpm INTEGER NOT NULL
+       maxbpm INTEGER NOT NULL,
+
+       UNIQUE ( title )
 );
 
 -- CREATE TABLE machinesongs etc.