On 22 Dec 2010, at 6:35pm, Richard Hipp wrote:

> On Wed, Dec 22, 2010 at 1:16 PM, Duquette, William H (318K) <
> william.h.duque...@jpl.nasa.gov> wrote:
> 
>> If I define a custom SQL function in Tcl using the SQLite "$db function"
>> command, is there any way to make the function return NULL?  I'm guessing
>> not.
>> 
> 
> There is no way to get a Tcl function to return NULL, since TCL has no
> concept of NULL.  So, no, sadly, you cannot get an SQLite function
> implemented in Tcl to return NULL.

... but you might find reading this useful:

<http://wiki.tcl.tk/17441>

Simon.
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