Hi,
I want to create a compound primary key. The elements of this primary key should be
the fields called nb (int) and d (double). nb should be default and autoincremented,
so that the following four inserts
insert into mytable (ts) values ( 1.0 )
insert into mytable (ts) values ( 1.1 )
insert into mytable (ts) values ( 1.1 )
insert into mytable (ts) values ( 2.0 )
delieveres me the following table content:
nb ts
----------------------------------
1 1.0
1 1.1
2 1.1
1 2.0
In MySQL the create table statement would look like:
CREATE TABLE mytable (
nb INT NOT NULL AUTO_INCREMENT,
timeStamp DOUBLE NOT NULL,
PRIMARY KEY (timeStamp, id)
)
Postgres gives me (using serial as replacement for AUTO_INCREMENT):
nb ts
----------------------------------
1 1.0
2 1.1
3 1.1
4 2.0
Is there any way to achieve the same result in Postgresql as the MySQL AUTO_INCREMENT does?
Thanks.
Yours
Dieter
