Ctrl+Z Not Found: The SQL Massacre

Starting as a Database Administrator is all sunshine and confidence. "I'll optimize these queries! I'll normalize these tables!" Fast forward a few months of 3 AM production crashes, inexplicable deadlocks, and executives asking why the database is "slow" when they're running SELECT * on 50 million rows... That majestic fox turns into a taxidermied nightmare with thousand-yard stare that's seen things no DBA should see. The database might be running fine, but your soul? That's been DROP TABLE'd without a backup.

The eternal dance of users forgetting passwords and sysadmins shrugging helplessly! Proper password storage means even admins can't see your actual password - they can only nuke it back to factory settings. That's not incompetence; that's security by design . Your password should be a one-way hash buried so deep that even the database admin is just staring at a cryptographic salad. If your IT person CAN tell you your password, update your resume immediately because that company's security is more vulnerable than PHP without input sanitization.

Content Ijust wanted to add to this discussion that I am just compiling on VS and GCC, and used to use include guards. I have now switched to pragma once, and the only reason for me is not 199 performance or portability or standard as I don't really care what is standard as long as VS and GCC support it, and that is that: pragma once reduces possibilities for bugs. It is all too easy to copy and paste a header file to another header file, modify it to suit ones needs, and forget to change the name of the include guard. Once both are included, it takes you a while to track down the error, as the error messages arent necessarily clear. Share Follow edited Nov 30, 2014 at 9:57 answered Jul 22, 2011 at 16:55 Cookie 11.7k 13 52 81 5 This is the correct reason. Forget performance--we should use pragma once because it's less error prone. It occurs to me that if compilers are already tracking include guards, they're already doing most of the work necessary to issue warnings when they see different files using the same macro name. - rieux Jun 13, 2019 at 6:36 Add a comment pragma once has unfixable bugs. It should never be used. 169 If your include search path is sufficiently complicated, the compiler may be unable to tell the difference between two headers with the same basename (e.g. afoo.h and bfoo.h), so a pragma once in one of them will suppress both. It may also be unable to tell that two different relative includes (e.g. include "foo.h" and include "..afoo.h" refer to the same file, so pragma once will fail to suppress a redundant include when it should have. lanc arca attocic tho commorc amia

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Content H..He. Hel.. OMG! His first words. Hello World! Programmer

Database joins explained through facial hair is the education we never knew we needed. Left join keeps all records from the left table but only matching ones from the right—just like how our guy keeps his left-side beard but borrows facial hair only where the right face matches. Right join? Reverse that logic. Inner join is where both tables have matching records, so only the mustache survives. And full join keeps everything from both tables, resulting in that glorious full-beard situation. Who needs ER diagrams when you've got these magnificent faces teaching SQL? The database professor we deserved but never had.