Re: NULL value EQUALS to EMPTY string?!

In article <87mh1c$gkr$1_at_nnrp1.deja.com>, Klim Samgin <klimsamgin_at_yahoo.com> writes
>Hi!
>
>It's notorious that table cells may have the special
>value null (or unknown).
>This value is different from the number 0,
>and it is also different from the empty string ''.
>
>But...

[snip]
>So, NULL is equal to '' for strings
>and is not equal to '' for numbers!
>
>Have you any comments?

The literal '' is the NULL string. Hence, all that happened above was the standard use of nulls.

Andy
--
Andy Hardy. PGP key available on request