Python sqlite and regex.

[Gerhard Häring]

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Matt Good wrote:
> SQLite3 already has a REGEXP function, so you don't need to create your
> own. [...]

Yes, but SQLite does not include a regular expression engine, and thus
according to the SQLite docs you need to register a REGEXP function in
order to make the REGEXP operator work:

"""
The REGEXP operator is a special syntax for the regexp() user function. No
regexp() user function is defined by default and so use of the REGEXP
operator will normally result in an error message. If a user-defined
function named "regexp" is defined at run-time, that function will be
called in order to implement the REGEXP operator.
"""

- -- Gerhard
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