![]() ![]() If the specified is less or equal to the maximum value of the auto-increment column, the value will be reset to the current maximum plus one. The default value for the cache expiration is 86400, or 24 hours. If you query the table stats, you may see old values from the cache, until they expire and MySQL refreshes them by reading from the storage engine. If the value, you are going to reset is higher than the current value of Autoincrement, then the next sequence starts with the value given The integer value is the number of seconds MySQL keeps statistics cached. It is just the table name, as only one column is allowed to be auto increment Here is the syntax to reset the auto increment value ALTER TABLE table_name AUTO_INCREMENT = value When the records are processed, they are deleted. I have a database table projectqueues which is used as a queue, where I store some records. I've just run into an issue which I'm not able to solve. We can reset the auto increment with a certain condition Auto Increment has been reset back to 1 automatically. ![]() ![]() This is a simple PHP code.For our case, it will be like SELECT AUTO_INCREMENT FROM information_schema.TABLES WHERE TABLE_SCHEMA = "test" AND TABLE_NAME = "test_lab" MySQL auto increment reset SELECT user_id, name, (SELECT COUNT(t2.user_id) FROM your_table t2 WHERE t2.user_id=t1.user_id) AS increment FROM your_table t1 ![]() SELECT user_id, name, COUNT(user_id) AS increment FROM your_table GROUP BY user_id īut this will return a single value for one user. You can reset the auto-increment value by using the ALTER TABLE statement. Perfect It is time to practice reset the auto-increment value of the ID column. simple COUNT(), and GROUP BY would do the trick. We have three rows with values of ID column are 1, 2, and 3. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |