Hey, Root? How do you test your slow query ticket, again? I didn't bother reading the giant green "Testing notes:" box on the ticket. Yeah, could you explain it while I don't bother to listen and talk over you? Thanks.

And later:
Hey Root. I'm the DBA. Could you explain exactly what you're doing in this ticket, because i can't understand it. What are these new columns? Where is the new query? What are you doing? And why? Oh, the ticket? Yeah, I didn't bother to read it. There was too much text filled with things like implementation details, query optimization findings, overall benchmarking results, the purpose of the new columns, and i just couldn't care enough to read any of that. Yeah, I also don't know how to find the query it's running now. Yep, have complete access to the console and DB and query log. Still can't figure it out.

And later:

Hey Root. We pulled your urgent fix ticket from the release. You know, the one that SysOps and Data and even execs have been demanding? The one you finished three months ago? Yep, the problem is still taking down production every week or so, but we just can't verify that your fix is good enough. Even though the changes are pretty minimal, you've said it's 8x faster, and provided benchmark findings, we just ... don't know how to get the query it's running out of the code. or how check the query logs to find it. So. we just don't know if it's good enough.

Also, we goofed up when deploying and the testing database is gone, so now we can't test it since there are no records. Nevermind that you provided snippets to remedy exactly scenario in the ticket description you wrote three months ago.

And later:

Hey Root: Why did you take so long on this ticket? It has sat for so long now that someone else filed a ticket for it, with investigation findings. You know it's bringing down production, and it's kind of urgent. Maybe you should have prioritized it more, or written up better notes. You really need to communicate better. This is why we can't trust you to get things out.

*twitchy smile*

#2 Worst thing I've seen a co-worker do?

Back before we utilized stored procedures (and had an official/credentialed DBA), we used embedded/in-line SQL to fetch data from the database.

var sql = @"Select
FieldsToSelect
From
dbo.Whatever
Where
Id = @ID"

In attempts to fix database performance issues, a developer, T, started putting all the SQL on one line of code (some sql was formatted on 10+ lines to make it readable and easily copy+paste-able with SSMS)
var sql = "Select ... From...Where...etc";

His justification was putting all the SQL on one line make the code run faster.
T: "Fewer lines of code runs faster, everyone knows that."

Mgmt bought it.

This process took him a few months to complete.

When none of the effort proved to increase performance, T blamed the in-house developed ORM we were using (I wrote it, it was a simple wrapper around ADO.Net with extension methods for creating/setting parameters)

T: "Adding extra layers causes performance problems, everyone knows that."

Mgmt bought it again.

Removing the ORM, again took several months to complete.

By this time, we hired a real DBA and his focus was removing all the in-line SQL to use stored procedures, creating optimization plans, etc (stuff a real DBA does).

In the planning meetings (I was not apart of), T was selected to lead because of his coding optimization skills.
DBA: "I've been reviewing the execution plans, are all the SQL code on one line? What a mess. That has to be worst thing I ever saw."
T: "Yes, the previous developer, PaperTrail, is incompetent. If the code was written correctly the first time using stored procedures, or even formatted so people could read it, we wouldn't have all these performance problems."

DBA didn't know me (yet) and I didn't know about T's shenanigans (aka = lies) until nearly all the database perf issues were resolved and T received a recognition award for all his hard work (which also equaled a nice raise).

## 4 years ago:
- Principal Architect: We are using IO1 storage type. What if we used GP2?
- Perf team: IDK, let's test it!
*we run tests*
- Perf team: results are OK, but we're exhausting Burst IO capacity, effectively hard-limiting number of tests we can run per day
- PArch: ahhh, I see. Then Gp2 is a no-go.

## 3 years ago
*PArch quits. New one is hired*
- PArch2: We are using IO1 storage type. What if we used GP2?
- Perf team: We've already tested that a while ago, results were THIS and THAT
- PArch2: I see. Let's test it again anyway
- Perf team: *wtf???*
*we run the same tests, we get the same results*
- PArch2: I see, so GP2 is a no-go.
- Perf team: *you think....? How did that thought never cross our minds, we wonder...*

## 2 years ago
*new DBA is hired*
- DBA2: We are using IO1 storage type. What if we used GP2?
- Perf team: We've already tested that a while ago, results were THIS and THAT
- PArch2: We've already tested that a while ago, results were THIS and THAT
- DBA2: I see. Let's test it anyways. I've read somewhere that GP2 might be a better bet
- PArch2: you might be right, let's do that
- Perf team: *wtf???*
*we run the same tests, we get the same results*
- DBA2: I see, so GP2 is a no-go.
- Perf team: *you think....? How did that thought never cross our minds, we wonder...*

## 1 year ago
*DBA manager left; new one was hired*
- MGMT_dba2: We are using IO1 storage type. What if we used GP2?
- ........

Should we even bother bringing up the history.....?

Worst thing I've seen a co-worker do?

Its all relative, I've seen a lot of "worst's". Here's one of many I'll try to post.

A (married) DBA would often come to work drunk, starting fooling around with a couple of devs (which we suspect she had sought adventures outside the IT dept based on rumors), and ultimately got fired because she was caught sleeping at her desk (and she was drunk). One of her conquests told us she came from a very poor childhood and this was her first real high paying job. Abusive husband, being attractive herself, and being surrounded by other attractive, highly intelligent, single bucks (aka horny) that had no morals, equaled bad decisions.

She wasn't the worst, it was the assholes who took advantage of the situation that makes it in my top 10 worst things I've seen.

Every day I feel like Dr. Leonard McCoy.

"I'm an automation expert, not a ..."

* DBA
* ElasticSearch administrator
* Kafka Architect
* Email marketing specialist
* SEO Analyst
* Front end developer
* Doctor
* Project manager
* Accountant

Boss needs certain stats pulled from database once a year for board meeting. This time I delegate it to a junior dba/sysadmin. He looks at my 3-year-old docs that I hastily jotted down and pasted and included my rambling notes with results from way back then. Mostly they were just to jog my own memory, not to be a really neat, clean instruction guide. He does the queries correctly, but in ticket for boss he pastes also all my notes from the docs. boss gets confused, "what is this other number, I don't get it?!" We have to have a meeting of the 3 of us and waste an hour or so just to figure out what went wrong, finally I realize what junior guy accidentally did. Moral of story: to avoid baffling the nontechs, always simplify, simplify, simplify. Alternate moral of story: before delegating a task that seems old hat to you, always review your notes/docs and make sure they're ready for someone else to use them.

I was introduced to an Oracle dba working for one of the companies licensed for them

I was just starting out a few years in
Was using MySQL and dotnet to develop our system

Cost effective

Bastard gives me a kind of smirking smile after talking about basically representing a fucking catalog of use cases no real development and says "it just takes more to get this position"

Few years later oracle buys MySQL , the product he smirked about

Guess their system was really only good for Wal fucking Mart

Burn in hell oracle !

There are a couple:

A system that updates user accounts to connect them into our wifi system by parsing thousands of processing files written in Clojure. The project was short lived and mainly experimental, It has complete test cases and the jar generated from it is still purring silently on the main application. It was used to replace an $85k vendor application that made no fucking sense. The code has not been touched in 2 years and the jar is still there. The dba mentioned the solution to the vendor, the vendor tried buying it from me, but being that it belongs to the institution nothing was touched, still, it got the VP's attention that I can make programs that would be bought for that level, it caught his attention even more when I showed him the codebase and he recognized a Lisp variant (he is old, and was back in the day a Fortran and Cobol developer)

A small Python categorical ML program that determines certain attributes of user generated data and effectively places them on the proper categories on the main DB. The program generates estimates of the users and the predictions have a 95% correctness rate. The DBA still needs to double check the generated results before doing the db updates. I don't remember how I coded it because I was mostly drunk when I experiment on the scenario. It also got the attention of the VP and director since the web tech manager was apparently doing crazy ML shit that they were not expecting me to do, it made them paranoid that I would eventually leave for a ML role somewhere, still here, but I want more moneys!!

A program that generates PDF documentation from user data, written in Go, Python and Perl (yes Perl) I even got shit from the lead developer since I used languages outside of their current scope of work. Dude had no option but to follow along with it :P since I am his boss

Many more. I am normally proud of my work code. But my biggest moment is my current ntural language processing unit that I am trying to code for my home, but I don't have enough power to build it with my computers, currently, my AI is too stupid, but sometimes it does reply back to my commands and does the things I ask it to do (simple things, opening a browser, search for a song etc) but 7 times out of ten it wont work :P

I'm now not only a full stack developer in the charge of my own Linux servers, Devops work, programming,and the MySQL DBA, but have been asked to take on the "small" responsibilities of our only Linux administrator (retiring). No mention of title change (which is lesser than all my work), nor salary increase. A person can only do so much. Don't think I'm accepting this lightly or quietly, but to be assumed to take on more responsibility without benefit is beyond me. Mind you, this came down from my director; my boss made me privy.

Having a senior DBA can save hours if not days of struggle and save your back, if you do not know well enough how to do a more complicated query yet, without fucking up something.
Good guidance and experience is worth so much.
... and no I do not have the rights to drop databases.