- db.serialize(function() {
- db.run("DELETE * FROM TableTest", (err,ret) => {
- console.log(ret);
+ db.serialize(function() {
+ let query =
+ "SELECT COUNT(*) AS scount " +
+ "FROM WillPlay " +
+ "WHERE cid = " + id;
+ db.get(query, (err,scRow) => {
+ if (!!err)
+ return cb(err);
+ query =
+ "SELECT nbPlayers " +
+ "FROM Challenges " +
+ "WHERE id = " + id;
+ db.get(query, (err2,chRow) => {
+ if (!!err2)
+ return cb(err2);
+ cb(chRow["nbPlayers"] - scRow["scount"]);
+ });