On Tue, 5 Apr 2016 23:56:53 +0200 R Smith <rsmith at rsweb.co.za> wrote:
> On 2016/04/05 11:15 PM, Keith Medcalf wrote: > > Are we confusing immediate constraints (checked per statement) with > > DEFERRED constraints (checked at COMMIT time) again? In SQLite some constraints are checked per row, not per statement. > We might be - though I assume the OP implicated only deferred > constraints - since immediate constraints will fail on contact, and > as such, no mystery surrounds their origins. One table may have more than one constraint. Primary key violations are reported as such, but CHECK constraint and FK constraint messages don't mention the column involved. OP: I investigated the problem a year ago or more and concluded it's not easy to remedy. Today violations are simply counted. To report them in detail would require carrying much more state, and externalizing constraint conditions in human-readable form. Unless you have a patch that does all that, I doubt PRAGMA DEBUG_MODE will be realized. --jkl
