354
I accidentally removed the WHERE clause from my SQL query in a personal tool. Every row is now the same. I overwrote 206,000+ rows. I have no backup, I am stupid. (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by drekly@lemmy.world to c/programming@programming.dev
100 comments fedilink hide all child comments

"UPDATE table_name SET w = $1, x = $2, z = $4 WHERE y = $3 RETURNING *",

does not do the same as

"UPDATE table_name SET w = $1, x = $2, y = $3, z = $4 RETURNING *",

It's 2 am and my mind blanked out the WHERE, and just wanted the numbers neatly in order of 1234.

idiot.

FML.

you are viewing a single comment's thread
view the rest of the comments
[-] evatronic@lemm.ee 4 points 1 year ago

Unrelated, but use placeholders instead of interpolation right into the query.

See: Little Bobby Tables. https://xkcd.com/327/

[-] sim642@lemm.ee 3 points 1 year ago

That's what they're doing...

[-] evatronic@lemm.ee 1 points 1 year ago

If true, great. I've not run across a language / RDBMs library that uses numbered place holders over the standard ?, but I'm sure someone's done it.

this post was submitted on 11 Oct 2023
354 points (97.6% liked)

Programming

17314 readers
49 users here now

Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!

Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.

Hope you enjoy the instance!

Rules

Rules

  • Follow the programming.dev instance rules
  • Keep content related to programming in some way
  • If you're posting long videos try to add in some form of tldr for those who don't want to watch videos

Wormhole

Follow the wormhole through a path of communities !webdev@programming.dev

founded 1 year ago
MODERATORS
snowe@programming.dev
Ategon@programming.dev
MaungaHikoi@lemmy.nz