Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I have a question about the auto number, for example, I insert a record into the field “Id” in table “products”. I input 3 fields “id” is 1.2, and 3. when I remove fied into 3, then I input the updated field again is 4, not 3. how so recorded is 3 instead of 4
This is by design. An identifier that has been used once must never, ever be used for another record. It could cause data corruption issues if there are relationships between tables – records could suddenly be pointing to a completely unrelated record in the original table.
Reference: 3.6.9. Using AUTO_INCREMENT