Mysql 使用同一个表中的值插入表，增量为 1(以 coloum 为单位)

Question

我有一个表 ABC

   ID    no         no2       no3     no4

    1     1         Abc       P       P
    2     2         xyz       A       P
    3     3         xsc       A       A
    4     4         xcs       P       P

我想插入ABC表

我的查询是这样的

插入ABC(no，no1，no2，no3，no4)值((从ABC + 1中选择max(no))，'XXX'，'XXX1'，'XXXX2')

Answer 1

您可以使用 INSERT 语句，例如:

insert into ABC (no,no2,no3,no4) select max(no)+ 1,'XXX','XXX1','XXXX2' from ABC;

示例:

mysql> create table ABC(id int primary key auto_increment,no int, no2 varchar(20),no3 varchar(20),no4 varchar(20));
Query OK, 0 rows affected (0.46 sec)

mysql> insert into ABC values
    -> (1,1,'Abc','P','P'),
    -> (2,2,'xyz','A','P'),
    -> (3,3,'xsc','A','A'),
    -> (4,4,'xcs','P','P');
Query OK, 4 rows affected (0.18 sec)
Records: 4  Duplicates: 0  Warnings: 0

mysql> insert into ABC (no,no2,no3,no4) select max(no)+ 1,'XXX','XXX1','XXXX2' from ABC;
Query OK, 1 row affected (0.16 sec)
Records: 1  Duplicates: 0  Warnings: 0

mysql> select * from ABC;
+----+------+------+------+-------+
| id | no   | no2  | no3  | no4   |
+----+------+------+------+-------+
|  1 |    1 | Abc  | P    | P     |
|  2 |    2 | xyz  | A    | P     |
|  3 |    3 | xsc  | A    | A     |
|  4 |    4 | xcs  | P    | P     |
|  5 |    5 | XXX  | XXX1 | XXXX2 |
+----+------+------+------+-------+
5 rows in set (0.00 sec)