I have deleted one row(row 20) in my “table category” ,please let me know that how can i reorder the catid (primary key)? at this time it is 21 after 19.
Thanks
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I have deleted one row(row 20) in my “table category” ,please let me know that how can i reorder the catid (primary key)? at this time it is 21 after 19.
Thanks
You cannot. The closest you can get is
truncate table, which will drop the table and recreate it, which means you lose all data in it, and the ID counter is reset to 0. Other than that, ID will always increment by one from the last inserted record, no matter if that record still exists or not. You can write a query to fix all your current IDs, of course, but upon next insert, it’ll still create a new gap. More to the point: if a sequential ordering without gaps is what you want, auto incremental ID is not the proper way to achieve that. Add another int field where you manually keep track of this ordering.