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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 1 year ago* (last edited 1 year 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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[–] jjjalljs@ttrpg.network 2 points 1 year ago (1 children)

With that amount of instruction you've done well

There's probably lots of stuff you don't even know you don't know.

Automated testing is a big part of professional software development, for example, and helps you catch things like this issue before they go live.

[–] drekly@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

I'm up to 537 lines of server code, 2278 lines in my script, and 226 in my API interfacing, I'm actually super proud of it haha.

But you're totally right, there are things I read that I just have no clue what they even mean or if I should know it, and probably use all the wrong terminology. I feel like I should probably go back to the start and find a course to teach me properly. I've probably learned so many bad habits. It doesn't help that I learned JS before ES6 so I need to force myself not to use var and force myself to understand and use arrow functions.

I absolutely know that the way I've written the program will make some people cringe, but I don't know any better. There are a few sections where I'm like "would that actually be what a real, commercial web app would do, or have I convoluted everything?"

For example, the entire thing is just one 129-line html file. I just hide and unhide divs when I need a new page or anything gets changed. I'm assuming that's a bad thing, but it works, it looks good, and I don't know any better!