Question

Suppose I have a table like this

ID Name
1  RJ
2  Hello
3  NV 
4  Dere 
5  What

So when I am deleting the fourth entry from the database ( ID=4 and Name= dere ) by using this Sql Statement

Delete from Table where ID="4"

then it deletes the table row but when I see the table it looks to me as

ID Name
1  RJ
2  Hello
3  NV 
5  What

So is there any way that it also updates the auto increment ID automatically like I want the table to look like this as soon as I delete the table fourth entry

ID Name
1  RJ
2  Hello
3  NV 
4  What

Hope you have got to know my question..!!

Answer 1

No. This would involve updating potentially hundreds of thousands of records. Your code shouldn’t require that keys be contiguous. You should never assume anything about the keys.