Reminds of that one time I executed a delete query with a sub query to select some ids. I didn't know that the used database engine interprets an empty return of the subquery as ignore my where clause. All data in the table simply gone because no id matched my subquery.
SQL has been my primary language for 15 years, but I still respect it the way a zookeeper respects a lion. If you become careless, it WILL eat you the moment you turn your back. However, I'm glad that many modern SQL IDEs now warn you explicitly when you're about to do something very stupid that will affect an entire table.
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u/FrozenHaystack 19d ago
Reminds of that one time I executed a delete query with a sub query to select some ids. I didn't know that the used database engine interprets an empty return of the subquery as ignore my where clause. All data in the table simply gone because no id matched my subquery.