mysql alter table auto_increment

ALTER TABLE document MODIFY COLUMN document_id INT auto_increment ..., I was confused with CHANGE and MODIFY keywo...

mysql alter table auto_increment

ALTER TABLE document MODIFY COLUMN document_id INT auto_increment ..., I was confused with CHANGE and MODIFY keywords before too: ALTER TABLE ALLITEMS CHANGE itemid itemid INT(10)AUTO_INCREMENT PRIMARY KEY; ALTER TABLE ALLITEMS MODIFY itemid INT(5);. While we are there, also note that AUTO_INCREMENT can also start with a pr

相關軟體 MySQL 資訊

MySQL
MySQL 是一個開源的 RDBMS(關係數據庫管理系統),它支持用 C,C ++,Java,Perl 和 PHP 等各種編程語言編寫的請求。由於其高速度和靈活性,MySQL 已成為主要用於開發各種形狀和大小的 Web 應用程序的最流行的數據庫系統之一。自 1995 年上市以來,這種非常受歡迎的開源數據庫管理系統已經應用於當今幾乎所有互聯網用戶的無數項目中。今天一些最受歡迎的 MySQL 用戶是 ... MySQL 軟體介紹

mysql alter table auto_increment 相關參考資料
sql - ALTER table - adding AUTOINCREMENT in MySQL - Stack Overflow

I was confused with CHANGE and MODIFY keywords before too: ALTER TABLE ALLITEMS CHANGE itemid itemid INT(10)AUTO_INCREMENT PRIMARY KEY; ALTER TABLE ALLITEMS MODIFY itemid INT(5);. While we are there,...

https://stackoverflow.com

sql - Mysql - Alter a column to be AUTO_INCREMENT - Stack Overflow

ALTER TABLE document MODIFY COLUMN document_id INT auto_increment ...

https://stackoverflow.com

sql - ALTER table - adding AUTOINCREMENT in MySQL - Stack ...

I was confused with CHANGE and MODIFY keywords before too: ALTER TABLE ALLITEMS CHANGE itemid itemid INT(10)AUTO_INCREMENT PRIMARY KEY; ALTER TABLE ALLITEMS MODIFY itemid INT(5);. While we are there,...

https://stackoverflow.com

mysql - Change auto increment starting number? - Stack Overflow

Yes, you can use the ALTER TABLE t AUTO_INCREMENT = 42 statement. However, you need to be aware that this will cause the rebuilding of your entire table, at least with InnoDB and certain MySQL versio...

https://stackoverflow.com

sql - How to reset AUTO_INCREMENT in MySQL? - Stack Overflow

For MyISAM, if the value is less than or equal to the maximum value currently in the AUTO_INCREMENT column, the value is reset to the current maximum plus one. For InnoDB, you can use ALTER TABLE ......

https://stackoverflow.com

primary key - make an ID in a mysql table auto_increment (after ...

For example, here's a table that has a primary key but is not AUTO_INCREMENT : mysql> CREATE TABLE foo ( id INT NOT NULL, PRIMARY KEY (id) ); mysql> INSERT INTO foo VALUES (1), (2), (5);. Y...

https://stackoverflow.com

mysql - Add Auto-Increment ID to existing table? - Stack Overflow

drop auto_increment capability alter table `users` modify column id INT NOT NULL; -- in one line, drop primary key and rebuild one alter table `users` drop primary key, add primary key(id); -- re add...

https://stackoverflow.com

mysql - Insert auto increment primary key to existing table ...

An ALTER TABLE statement adding the PRIMARY KEY column works correctly in my testing: ALTER TABLE tbl ADD id INT PRIMARY KEY AUTO_INCREMENT;. On a temporary table created for testing purposes, the ab...

https://stackoverflow.com

MySQL 5.7 Reference Manual :: 13.1.8.4 ALTER TABLE Examples

We indexed c (as a PRIMARY KEY ) because AUTO_INCREMENT columns must be indexed, and we declare c as NOT NULL because primary key columns cannot be NULL . For NDB tables, it is also possible to chang...

https://dev.mysql.com