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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 2 years ago* (last edited 2 years 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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[–] AlphaOmega@lemmy.world 2 points 2 years ago* (last edited 2 years ago) (1 children)

This is a hard lesson to learn. From now on, my guess is you will have dozens of backups.

[–] kucing@lemmy.ml 1 points 2 years ago

I've read something like "there are two kinds of people: those who backup and those who are about to"