When id column has no autoincrement flag query for lastInsertId fails
on postgres because no value has been generated. Call lastInsertId only
if id is null.
Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>
This way code using the DB mappers can have try catch blocks on this
type of exceptions if they do not care if there was non or to many.
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
This allows elegant upserts where the entity ID is provided (e.g. by an
external system) and when that data is fed into our database multiple
times.
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
