The regexp function only returns a 1 or 0 (true/false) just as do LIKE and GLOB. I don't see a way to use any of them to directly find part of a long string. Using substr() to iterate through the long string, one of these comparison functions can be used to find a target as in the following example:
CREATE TABLE POStable (Pos INTEGER PRIMARY KEY ASC Autoincrement);INSERT INTO POStable Default Values; -- repeat for as long as the longest string less length of search key
CREATE TABLE stringtable (string TEXT);
INSERT INTO stringtable (string) VALUES ('onetwothree');
INSERT INTO stringtable (string) VALUES ('fourfivesix');
INSERT INTO stringtable (string) VALUES ('seveneightnine');
-- search for 'five'
SELECT MAX(pos), string FROM
(
SELECT string, pos, regexp('five.*',substr(string, pos)) AS found FROM
stringtable, postable
) WHERE found ; Tom-----Original Message----- From: D H
Sent: Thursday, June 16, 2011 10:55 AM To: yunqa@xxxxxxxxxxxxx Subject: [yunqa.de] Regular expression in select Hi, I'm using SQLiteSpy. It is a great tool ! I know that in the where clause I can use a regular expression. Is it also possible to use a regular expression in the select clause, in order to get only a part of a long string? If possible, could you give a small example _______________________________________________ Delphi Inspiration mailing list yunqa@xxxxxxxxxxxxx //www.freelists.org/list/yunqa _______________________________________________ Delphi Inspiration mailing list yunqa@xxxxxxxxxxxxx //www.freelists.org/list/yunqa
