On Oct 16, 2019, at 11:42 PM, Peng Yu <pengyu...@gmail.com> wrote: > > Suppose A is a sqlite3 db file, B is some other file which is > generated based on the content in A. When A is not changed, there is > no need to change B, otherwise, B will need to be regenerated. In > other words, B depends on A, and can be handled by tools dealing with > dependencies (e.g., GNU Make, Scons). > > Many people replied to this thread suggesting not to directly use > sqlite3, but access the sqlite3 database via a network interface. That > will not be an option, as I don't think a network interface can be > easily supported by those dependency checking tools like GNU Make.
$ echo 'select count(*) from MyTable where rowid > 1234' | nc dbserver 8888 That will return the number of new rows added to MyTable since the last-known highest row ID 1234, which we remembered previously as the highest ID used for generating output file B from DB A. If the output of the command is 0, B doesn’t have to be re-generated. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
