Sams Teach Yourself SQL in 24 Hours, Third Edition By Ronald R. Plew, Ryan K. Stephens
Table of Contents
Hour 24. Extensions to Standard SQL
Q&A
Q1:
Why do variations in SQL exist?
A1:
Variations in SQL exist between the various implementations because of the way data is stored, the various vendors ' ambition for trying to get an advantage over competition, and new ideas that surface.
Q2:
After learning basic SQL, will I be able to use SQL in different implementations?
A2:
Yes. However, remember that there are differences and variations between the implementations. The basic framework for SQL is the same among most implementations.
