Rework tables

ddl.sql

@@ -2,16 +2,26 @@ create table guild (
 	id integer primary key,
 	name text
 );
+create unique index idx_guild_name on guild(name);
 
-create table stinky (
+create table player (
 	id integer primary key,
 	name text,
 	guild integer references guild(id)
 );
+create unique index idx_player_name on player(name);
+
+create table association (
+	id integer primary key,
+	lhs integer references player(id),
+	rhs integer references player(id),
+	note text
+);
 
 create table note (
 	id integer primary key,
 	content text,
 	timestamp string,
-	stinky integer references stinky(id)
-);
+	player integer references player(id)
+);
+create unique index idx_note_content on note(timestamp, player);