자동 증분 mysql 추가

코드 예제

3
0

mysql 설정 id 자동 증가

ALTER TABLE users AUTO_INCREMENT=1001;
1
0

mysql 쿼리 결과의 자동 증가 열

SET @auto_increment=0;
SELECT @auto_increment := @auto_increment+1 AS `No`;
1
0

자동 증분 mysql 에 삽입

/* To insert into an auto incrementing field without specifing every column in
the table, you can use the key word default in the place of the auto 
incrementing column*/

INSERT IGNORE INTO my_table VALUES(default, "test1", 222)
/*VS */
INSERT IGNORE INTO my_table(name, num) VALUES("test1", 222)
/*Having to type out all of the column names except the auto incrementing one
can be very tedious when you have many columns, just use the keyword defualt
instead and you only have to type it once.
0
0

auto_increment mysql

ALTER TABLE User AUTO_INCREMENT = 1;
-1
0

기존 테이블 mysql 에서 자동 증분을 변경하는 방법

ALTER TABLE tbl_access ADD COLUMN `access_id` int(10) NOT NULL PRIMARY KEY AUTO_INCREMENT FIRST
-2
0

mysql 추가 자동 증가 id 기존 테이블

ALTER TABLE `users` ADD `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY

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