Re: Fwd: inserting new data only
David Raymond <[email protected]> Tue, 25 Feb 2020 19:30:59 +0000
| Newsgroups | gmane.comp.db.sqlite.general |
|---|---|
| Message-ID | <VI1PR07MB602934262DD945D9267E693787ED0@VI1PR07MB6029.eurprd07.prod.outlook.com> |
Awesome---exactly what's needed. The monotonicity of the time key variable is assured by how the data is collected---but is there a way to express that in sqlite? create table data ( key text primary key check (julianday(key) > julianday(select max(key) from data), data integer not null); That would/should be done in a trigger, and not a check constraint. A check constraint is only supposed to be something which will _always_ be true about that one and only record, and which only needs the contents of that 1 record to determine, and not something that might change depending on... anything else. _______________________________________________ sqlite-users mailing list [email protected] http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users