删除行后重新调整auto_increment主键字段

Question

I've following table configuration

CREATE TABLE Verses
(
ID int PRIMARY KEY AUTOINCREMENT,
verse_title varchar(255),
verse_desc varchar(255)
)

I want to keep id of all rows contiguously, and it is okay until I delete some rows. after I deleted a row (say Id=2), I want to insert new insertion with id=2. please see attatched image.

Answer 1

Use alter table AUTO_INCREMENT

 ALTER TABLE tablename AUTO_INCREMENT = your_value

You can obtain the actual value for autoincremnt in this way ..

SELECT `AUTO_INCREMENT`
FROM  INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'your_database_name'
AND   TABLE_NAME   = 'your_table';

then you can use the alter table ..

or you can select the count() of the rows after deleteing your row and the sue the alter tbale ..