groups: bump group_concat_max_len to accomdate more users

src/database.js

@@ -63,7 +63,9 @@ async function initialize() {
 
         connection.query(`USE ${gDatabase.name}`);
         connection.query('SET SESSION sql_mode = \'strict_all_tables\'');
-        connection.query('SET SESSION group_concat_max_len = 65536'); // GROUP_CONCAT has only 1024 default
+        // GROUP_CONCAT has only 1024 default. we use it in the groups API which doesn't support pagination yet
+        // a uuid v4 is 36 in length. so the value below provides for roughly 10k users
+        connection.query('SET SESSION group_concat_max_len = 360000');
     });
 }