Function existsCommand

app/redis-6.2.6/src/db.c:710–718

EXISTS key1 key2 ... key_N. * Return value is the number of keys existing. */

/* EXISTS key1 key2 ... key_N.
 * Return value is the number of keys existing. */
void existsCommand(client *c) {
    long long count = 0;
    int j;

    for (j = 1; j < c->argc; j++) {
        if (lookupKeyReadWithFlags(c->db,c->argv[j],LOOKUP_NOTOUCH)) count++;
    }
    addReplyLongLong(c,count);
}

void selectCommand(client *c) {
    int id;