【MYSQL】insert into

• insert into table-name values()

mysql> desc ns;
+-------+------------------+------+-----+---------+----------------+
| Field | Type             | Null | Key | Default | Extra          |
+-------+------------------+------+-----+---------+----------------+
| uid   | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| uname | varchar(20)      | NO   |     | NULL    |                |
| udate | date             | YES  |     | NULL    |                |
+-------+------------------+------+-----+---------+----------------+
3 rows in set (0.00 sec)

mysql> drop table ns;
Query OK, 0 rows affected (0.00 sec)

mysql> insert into ns values(null,'alex',now());
Query OK, 1 row affected, 1 warning (0.05 sec)

mysql> select * from ns;
+-----+-------+------------+
| uid | uname | udate      |
+-----+-------+------------+
|   1 | alex  | 2016-11-08 |
+-----+-------+------------+
1 row in set (0.00 sec)

• 插入部分列

mysql> insert into ns values(null,'alex');
ERROR 1136 (21S01): Column count doesn't match value count at row 1
mysql> insert into ns(uid,uname) values(null,'alex');
Query OK, 1 row affected (0.00 sec)

mysql> select * from ns;
+-----+-------+------------+
| uid | uname | udate      |
+-----+-------+------------+
|   1 | alex  | 2016-11-08 |
|   2 | alex  | NULL       |
+-----+-------+------------+
2 rows in set (0.00 sec)

• 插入非法null

mysql> insert into ns values(null,null,now());
ERROR 1048 (23000): Column 'uname' cannot be null

• 插入两行

mysql> insert into ns values(null,'jat',19871117),(null,'jet',14581122);
Query OK, 2 rows affected (0.00 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> select * from ns;
+-----+-------+------------+
| uid | uname | udate      |
+-----+-------+------------+
|   1 | alex  | 2016-11-08 |
|   2 | alex  | NULL       |
|   3 | jat   | 1987-11-17 |
|   4 | jet   | 1458-11-22 |
+-----+-------+------------+
4 rows in set (0.00 sec)

• 再次插入部分列

mysql> insert into ns(uname) values('james');
Query OK, 1 row affected (0.00 sec)

mysql> select * from ns;
+-----+-------+------------+
| uid | uname | udate      |
+-----+-------+------------+
|   1 | alex  | 2016-11-08 |
|   2 | alex  | NULL       |
|   3 | jat   | 1987-11-17 |
|   4 | jet   | 1458-11-22 |
|   5 | james | NULL       |
+-----+-------+------------+
5 rows in set (0.00 sec)

• 使用set 插入数据

mysql> insert into ns set uname='lecake';
Query OK, 1 row affected (0.00 sec)

mysql> select * from ns;
+-----+--------+------------+
| uid | uname  | udate      |
+-----+--------+------------+
|   1 | alex   | 2016-11-08 |
|   2 | alex   | NULL       |
|   3 | jat    | 1987-11-17 |
|   4 | jet    | 1458-11-22 |
|   5 | james  | NULL       |
|   6 | lecake | NULL       |
+-----+--------+------------+
6 rows in set (0.00 sec)

• column 列顺序与表不一致

mysql> insert into ns(uname,udate,uid) values ('Kyrie',20160711,null)
    -> ;
Query OK, 1 row affected (0.00 sec)

mysql> select * from ns;
+-----+--------+------------+
| uid | uname  | udate      |
+-----+--------+------------+
|   1 | alex   | 2016-11-08 |
|   2 | alex   | NULL       |
|   3 | jat    | 1987-11-17 |
|   4 | jet    | 1458-11-22 |
|   5 | james  | NULL       |
|   6 | lecake | NULL       |
|   7 | Kyrie  | 2016-07-11 |
+-----+--------+------------+
7 rows in set (0.00 sec)

•  使用INSERT…SELECT语句插入从其他表选择的行
•  查询不能包含一个ORDER BY子句,而且INSERT语句的目的表不能出现在SELECT查询部分的FROM子句.

mysql> select * from ns2;
+-----+--------+-----------+------------+
| uid | uname  | uemail    | udate      |
+-----+--------+-----------+------------+
|   1 | config | con@1.com | 1987-11-17 |
|   2 | enable | en@1.com  | 1458-11-22 |
+-----+--------+-----------+------------+
2 rows in set (0.00 sec)

mysql> select uname,udate from ns2;
+--------+------------+
| uname  | udate      |
+--------+------------+
| config | 1987-11-17 |
| enable | 1458-11-22 |
+--------+------------+
2 rows in set (0.00 sec)

mysql> insert into ns(uname,udate) select uname,udate from ns2;
Query OK, 2 rows affected (0.05 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> select * from ns;
+-----+--------+------------+
| uid | uname  | udate      |
+-----+--------+------------+
|   1 | alex   | 2016-11-08 |
|   2 | alex   | NULL       |
|   3 | jat    | 1987-11-17 |
|   4 | jet    | 1458-11-22 |
|   5 | james  | NULL       |
|   6 | lecake | NULL       |
|   7 | Kyrie  | 2016-07-11 |
|   8 | config | 1987-11-17 |
|   9 | enable | 1458-11-22 |
+-----+--------+------------+
9 rows in set (0.00 sec)

mysql> 

---

INSERT 语法

INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
    [INTO] tbl_name [(col_name,...)]
    VALUES ({expr | DEFAULT},...),(...),...
    [ ON DUPLICATE KEY UPDATE col_name=expr, ... ]
或：

INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE]
    [INTO] tbl_name
    SET col_name={expr | DEFAULT}, ...
    [ ON DUPLICATE KEY UPDATE col_name=expr, ... ]
或：

INSERT [LOW_PRIORITY | HIGH_PRIORITY] [IGNORE]
    [INTO] tbl_name [(col_name,...)]
    SELECT ...
    [ ON DUPLICATE KEY UPDATE col_name=expr, ... ]