Whether you’re learning SQL through one of our interactive SQL courses or by some other means, it can be really helpful to have a SQL cheat sheet.
Bookmark this article, or download and print the PDF, and keep it handy for quick reference the next time you’re writing an SQL query!
Need to brush up on your SQL before you’re ready for the cheat sheet? Check out our interactive online SQL Fundamentals course, read about why you should learn SQL, or do some research about SQL certifications and whether you’ll need one.
The standard Perl distribution comes with a debugger, although it's really just another Perl program, perl5db.pl. Since it is just a program, I can use it as the basis for writing my own debuggers to suit my needs, or I can use the interface perl5db.pl provides to configure its actions. That's just the beginning, though. read more...
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