Add uniqueness constraint to tournaments as well.

diff --git a/sql/ccbs.sql b/sql/ccbs.sql
index 0bbc009..b866067 100644 (file)
--- a/sql/ccbs.sql
+++ b/sql/ccbs.sql
@@ -64,7 +64,9 @@ CREATE TABLE tournaments (
        location VARCHAR NOT NULL,
        "date" DATE NOT NULL,
        machine INTEGER NOT NULL REFERENCES machines,
-       scoringsystem INTEGER NOT NULL REFERENCES scoringsystems
+       scoringsystem INTEGER NOT NULL REFERENCES scoringsystems,
+
+       UNIQUE ( season, name )
 );
 
 CREATE TABLE rounds (