ID primary key growth
id name
1 zhang
2 liu
3 li
4 wang
insert leng after deleting 4
id name
1 zhang
2 liu
3 li
5 leng
does this make the newly inserted data ID equal to 4?
ID primary key growth
id name
1 zhang
2 liu
3 li
4 wang
insert leng after deleting 4
id name
1 zhang
2 liu
3 li
5 leng
does this make the newly inserted data ID equal to 4?
cannot be written automatically. The primary key id is self-increasing. You can only write id=4, when actively writing. If id=4 has it, it will report an error. There is no way to do it.
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