It's an OUTER JOIN: Outer Joins.

Why you would use that syntax now though...

It might post be me, but I'm really struggling to see what you're asking here. It just looks like a bunch of links with some unformatted SQL sandwiched in. Can...

Why do you want to decrypt them? Normally password should be stored in a hashed and salted method, so they can't be decrypted.

You can increase the priority of a query in terms of deadlock victimisation (a query with a high priority will cause one with a lower to be the deadlock victim)....

On the note of getting your result set, I would do something like this:

I recommend against having numbered month columns. YOu should have a single column to denote the month number, and another to denote it's value. Like:

Triple post (sorry). it's also inconsistant. See my notes below:
<AgentDataWork>
<AgentID>001</AgentID>--Agent ID outside of Event
<Event>
  <code>Not Ready</code>
  <date>1/1/2018 9:00 am</date>
  <reason>break</reason>

just having a look at that xml further, it isn't valid. You have no root node (AgentDataWork isn't your root, as it's repeated). What is this going to be consumed...

Thanks for posting your attempt. While I have a look, whya re you storing dates as a varchar? datetimes should be stored as a datetime(2).

What is their reasoning for using DROP and CREATE? Considering that they aren't in charge of deployment, they must have a good reason for overuling someone that is.

Whataattempts have you made so far to get his result? Can you post them and tell us what was wrong with them?