Menu
I want to know if it's possible to select incremented integer from mysql table? and if it does possible, how can I achieve that?
My case is, I have a bunch of data and I need to do INSERT INTO newtable ... SELECT somefield FROM sometable. However, there is one field on newtable called counter that I need it in incremented integer, eg:
row #1: counter=1
row #2: counter=2
row #3: counter=3
row #4: counter=4
row #5: counter=5
row #6: counter=6
... and so on...
I can do this using simple php script, but I want to try to do it all from mysql query. So, can you guys tell me if it's possible?
848
The MS SQL Server uses the IDENTITY keyword to perform an auto-increment feature. In the example above, the starting value for IDENTITY is 1, and it will increment by 1 for each new record. Tip: To specify that the "Personid" column should start at value 10 and increment by 5, change it to IDENTITY(10,5) .
The auto increment in SQL is a feature that is applied to a field so that it can automatically generate and provide a unique value to every record that you enter into an SQL table. This field is often used as the PRIMARY KEY column, where you need to provide a unique value for every record you add.
No. If you really need this, you will have to generate ID manually.
Try this:
INSERT INTO newTable(someField, counter)
SELECT a.someField, (@rank:=@rank+1) AS counter
FROM sometable a INNER JOIN
(SELECT @rank :=0) b
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
