[brianwawok]

Or oracle has it

A DBA can even sit there as queries fly past, and add hints on the fly.

And then you change a query from "select" (lowercase) to "SELECT" (uppercase), and query plans break and you break production.

Fun times

[Matt3o12_]

Could you elaborate why changing select from lowercase to uppercase would break anything?

[kimdotcom]

Stored procedures where master and slave are on different OSs and/or case-sensitivity settings are not the same?

Just a guess.