Hi, Tobias,
Tobias Brox wrote:
> How can you have a default value on a primary key?
Just declare the column with both a default value and a primary key
constraint.
It makes sense when the default value is calculated instead of a
constant, by calling a function that generates the key.
In fact, the SERIAL type does nothing but defining a sequence, and then
use nextval('sequencename') as default.
HTH,
Markus
--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS
Fight against software patents in Europe! www.ffii.org
www.nosoftwarepatents.org
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
