Question

I need to shift all the primary keys for table alike

UPDATE TODO SET id = id + 1 

but I can’t do it ( Demo from Ahmad Al-Mutawa answer ) descript why. primary key can’t be changed like this.

Also I can’t ALTER the table according that this is sqlite: http://www.sqlite.org/omitted.html

I’m thinking about some hardcoded recursive change for other columnts but without tsql and stored procedures it’s hard for me to get how can I make it?

Answer 1

When you execute your UPDATE command, you will get duplicate IDs temporarily.

To avoid this, change the IDs in two steps.
First, pick a number that is larger than the largest ID, and add it to all IDs:

UPDATE TODO SET id = id + 1000000000

Then, subtract one less from all IDs:

UPDATE TODO SET id = id - (1000000000 - 1)