SQLite Forum

.selecttrace unknown and strange errors
Not at all.  

The C1 trigger was scanned as part of preparing the VDBE program because your trigger does an "UPDATE C1" which requires that all triggers which might fire on "UPDATE OF C1" be parsed to into the applicable parse tree.

However, this trigger could not be parsed correctly and therefore you were alerted to your error.

This is quite independent (I should think) of whether or not the trigger will actually be incorporated into the VBDE program.