我正在寻找这样的查询：
id | int |自动递增
东西| varchar | 255
insert into `table` set something = concat('val', id);
这样桌子就看起来像
1 | val1
2 | val2
3 | val3 ...
除了id总是以每行
val0结尾。我怎样才能做到这一点？
最佳答案
mysql> describe concattest;
+-------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+------------------+------+-----+---------+----------------+
| id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| val | text | YES | | NULL | |
+-------+------------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
mysql> INSERT INTO concattest (val) VALUES (concat('val', LAST_INSERT_ID()));
Query OK, 1 row affected (0.06 sec)
mysql> select * from concattest;
+----+------+
| id | val |
+----+------+
| 1 | val0 |
+----+------+
1 row in set (0.00 sec)
mysql> INSERT INTO concattest (val) VALUES (concat('val', LAST_INSERT_ID()));
Query OK, 1 row affected (0.00 sec)
mysql> select * from concattest;
+----+------+
| id | val |
+----+------+
| 1 | val0 |
| 2 | val1 |
+----+------+
2 rows in set (0.00 sec)
mysql> INSERT INTO concattest (val) VALUES (concat('val', LAST_INSERT_ID()));
Query OK, 1 row affected (0.00 sec)
mysql> select * from concattest;
+----+------+
| id | val |
+----+------+
| 1 | val0 |
| 2 | val1 |
| 3 | val2 |
+----+------+
3 rows in set (0.00 sec)
关于mysql - 将自动增量插入第二列，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/5972446/