How to add Auto-Number column

I want my PK column to be an Auto-Number field? Preferably like a number(10) col that has a seed of 1 and increments by 1, no cryptic guid #.
Also, how do I insert an explicit value into the Auto-Number field?
e.g. - preserving the ID column value of 1:
insert into mytable (ID, Name)
values (1, 'Chris')
Thanks in advance
Chris

You would have to use a sequence in combination with a before insert trigger.
In that trigger you will get the next value from the sequence and insert it into the correct field.
If you need the generated number in an other insert (e.g. parent-child tables), you can use the returning clause.
Technicly it is possible to insert a explicit value (in the trigger you would check if there is a value given for that field), but it would be bad practice if it concerned an key field.
greetings
Freek D
I want my PK column to be an Auto-Number field? Preferably like a number(10) col that has a seed of 1 and increments by 1, no cryptic guid #.
Also, how do I insert an explicit value into the Auto-Number field?
e.g. - preserving the ID column value of 1:
insert into mytable (ID, Name)
values (1, 'Chris')
Thanks in advance
Chris

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How to add Auto-Number column

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