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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 9 months ago* (last edited 9 months ago) by drekly@lemmy.world to c/programming@programming.dev
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"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.

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[-] fiveoar@lemmy.dbzer0.com 10 points 9 months ago

I have done this too. Shit happens.

One of my co-workers used to write UPDATE statements backwards limit then where etc, to prevent this stuff, feels like a bit of a faff to me.

[-] jochem@lemmy.ml 26 points 9 months ago

I always write it as a select, before turning it into a delete or update. I have burned myself too often already.

[-] DacoTaco@lemmy.world 2 points 9 months ago

^ this is a very good tip that ive been using myself too

[-] drekly@lemmy.world 2 points 9 months ago

Oh I did that like a year ago.

And then last night had an error that led me back near this code and stupidly thought "hey it'd look neater if those numbers were in order"

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

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