async function checkIdList() {
    await getMembers().then(q => (allMembers = q));
    console.log('2: ' + allMembers);
}

async function getMembers() {
    return new Promise(resolve => {
        var q;
        groups_db.each('SELECT members FROM groups WHERE Id = 1', (_error, data) => {
            console.log('1: ' + data.members);
            q = data.members;
        });
        resolve(q);
    });
}