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I’m wondering is it possible to reset id field, let’s say now i have 5000 records and id is auto incrementing and after some time i deleted some records so now it’s going like
1, 5, 10, 11, 23 and so on, it’s not realy a issue for me, i just wondering is it possible to make all id’s go in order 1,2,3,4,5 and so on
Why did you need this? If your ID field unsigned bigint type, than you can have 9223372036854775808 values. Is that not enough for you? But, if you still think this a problem, you should look to stored procedure feature: http://dev.mysql.com/doc/refman/5.0/en/create-procedure.html. In the procedure you must compare current record with previous and next one’s and shift the ID’s if there is a “free” number. In the end of procedure you just can set increment value such like this: ALTER TABLE
table_nameAUTO_INCREMENT = last_record+1. There’s no way to do this with MySQL build-in features.