And, only if you assign your own name to the column can you use it in foreign key constraints ...
--- Theory is when you know everything but nothing works. Practice is when everything works but no one knows why. Sometimes theory and practice are combined: nothing works and no one knows why. >-----Original Message----- >From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-users- >bounces at mailinglists.sqlite.org] On Behalf Of Simon Slavin >Sent: Tuesday, 31 March, 2015 19:26 >To: General Discussion of SQLite Database >Subject: Re: [sqlite] insert in sqlite (returning value for inserted row) > > >On 1 Apr 2015, at 2:19am, Kumar Suraj <surajnitk at gmail.com> wrote: > >> I am using sqlite C interface for inserting data in the table. The >primary >> key is a 64 bit integer which i need to auto-increment and get >populated >> automatically as we do not provide that value in insert statement. Is >there >> a way i can get the autoincremented value for each row inserted when >ever i >> execute my insert. > >[explanation simplified because I don't want to have to type three pages] > >SQLite does this automatically if you do not declare a primary key for a >table. It will create an INTEGER column called 'rowid' for you and >increment the value for each row you enter. You will never see that >column unless you ask for it explicitly by doing something like > >SELECT rowid,* FROM myTable LIMIT 10; > >but it's a real column and you can select, search and sort on it just >like any other INTEGER column. If you have already created your table >try the above statement on it. > >Alternatively you can follow the instructions from FAQ 1 on this page: > ><https://www.sqlite.org/faq.html> > >This does more or less the same thing, with the advantage that you can >specify your own name for the column. > >Simon. >_______________________________________________ >sqlite-users mailing list >sqlite-users at mailinglists.sqlite.org >http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
