At 09:05 2015-04-17, Paul Hill <[email protected]> wrote:

[snip]

I read this today:

http://stackoverflow.com/questions/4456438/how-do-i-correctly-pass-the-string-null-an-employees-proper-surname-to-a-so

"We have an employee whose last name is Null. He kills our employee
lookup application when his last name is used as the search term
(which happens to be quite often now)."

Dear Mr. Null, ah, Hill:

     Sad but amusing.  Schadenfreude, anyone?

     I have sent E-mail about it to Fabian Pascal of DBDebunk.

As well as why not to use null, it also shows the danger of using in-band values as special values. (In-band values are those that can be legitimate data values. For example, someone could (and does) have a lastname of "Null".)

Sincerely,

Gene Wirchenko


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