Double query  Go to the Training: MySQL II challenge

I'm trying to inject a second command that will get executed after the select, but before the password check. Am I on the right track?
This works locally for me, but when I try it on wechall I get an "GDO 1064". Is there something "blocking" executing two queries with the command "queryFirst"?

You cannot execute two queries in a single query.
This is a limitation, once introduced for security, in mysql/mysqli (if i recall correctly)

Most other languages and their mysql bindings should have the same limits.

I googled a bit and it seems that it would be possible.

Take a look at https://stackoverflow.com/questions/802437/how-to-execute-two-mysql-queries-as-one-in-php-mysql

with the username, I can use the sql injection, but I don't know how to bypass the password check.

exp32, that is not a question. It also does not relate to the topic of this thread.

Perhaps research SQLi a bit more?

@exp32: Just make your sent data fulfil the password check.... at least that's what i want you todo ;)