CREATE SEQUENCE orders_seq
START WITH 1000
INCREMENT BY 1;
Creates a sequence with a starting value of 1000 which is incremented by 1.
Using sql Sequences
a reference to seq_name.NEXTVAL is used to get the next value in a sequence. A single statement can only generate a single sequence value. If there are multiple references to NEXTVAL in a statement, they use will use the same generated number.
NEXTVAL can be used for INSERTS
INSERT INTO Orders (Order_UID, Customer)
VALUES (orders_seq.NEXTVAL, 1032);
It can be used for UPDATES
SET Order_UID = orders_seq.NEXTVAL
WHERE Customer = 581;
It can also be used for SELECTS
SELECT Order_seq.NEXTVAL FROM dual;
ATutorialHub Related Guide
panduranga gupta2021-07-05 07:03:13
good website for learning and help me a lot
The awsome website i am looking like for a long time, good work atutorialhub team keep doing
Learning a lot from the courses present on atutorialhub. The courses are very well explained. Great experience
It is very helpful to students and easy to learn the concepts
Great job Tutorials are easy to understand Please make use of it
Zain Khan2021-09-18 15:07:23
Great content and customized courses.
Rudrakshi Bhatt2021-09-09 15:08:10
Well structured coursed and explained really well!
Pavana Somashekar2021-09-11 15:09:08
Good platform for beginners and learn a lot on this website