Why is RAISERROR misspelled? Or is it not?

Question

Why isn\'t RAISERROR spelled RAISEERROR? Where is the second E? I could understand if it were some ancient keyword length constraint, but I would

Answer 1

why is there still a TIMESTAMP data type? support for old versions. Someone Sybase person long ago decided to make it RAISERROR and not RAISEERROR, when Microsoft made a deal with Sybase they continued the trend.