From Schultheis Burkhard@21:1/5 to All on Mon Nov 16 07:27:11 2020
I wanted to clean up the table mysql.user, because there were still
entries for hosts in it, which we don't have anymore. I wanted to type something like this:
DELETE FROM mysql.user WHERE host LIKE "nn.nn.nn%";
By mistake this became
DELETE FROM mysql.user WHERE user host LIKE "nn.nn.nn%";
Caused the exact opposite of what I intended, as if I had entered
DELETE FROM mysql.user WHERE host NOT LIKE "nn.nn.nn%";
Was fatal, of course. Can anyone figure out why the wrong statement made
such a mess?