mysql数据库项目例子_很实用的MySql数据库语句（项目中的例子）
mysql> insert into student
-> values('013','張恒','男','1992-2-3','信息系');
Query OK, 1 row affected (0.17 sec)
mysql> create event in_s on schedule at now()
-> do
-> insert into student
-> values('014','張換','男','1992-2-3','信息系');
Query OK, 0 rows affected (0.00 sec)
mysql> select* from student;
+-----+--------+------+---------------------+------------+
| son | sname? | sex? | birthday??????????? | sdept????? |
+-----+--------+------+---------------------+------------+
| 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 |
| 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 |
| 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 |
| 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? |
| 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? |
| 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? |
| 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? |
+-----+--------+------+---------------------+------------+
10 rows in set (0.04 sec)
mysql> set global event_schedule=ture;
ERROR 1193 (HY000): Unknown system variable 'event_schedule'
mysql> set global event_scheduler=ture;
ERROR 1231 (42000): Variable 'event_scheduler' can't be set to the value of 'ture'
mysql> set global event_scheduler=true;
Query OK, 0 rows affected (0.00 sec)
mysql> select* from student;
+-----+--------+------+---------------------+------------+
| son | sname? | sex? | birthday??????????? | sdept????? |
+-----+--------+------+---------------------+------------+
| 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 |
| 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 |
| 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 |
| 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? |
| 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 014 | 張換?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? |
| 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? |
| 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? |
+-----+--------+------+---------------------+------------+
11 rows in set (0.00 sec)
mysql> create event in_sl on schedule at now+interval 10 second
-> do
-> update student
-> aet sname='張思思'
-> where son='014';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'sname='張思思'
where son='014'' at line 4
mysql> create event in_sl on schedule at now+interval 10 second
-> do
-> update student
-> set sname='張思思'
-> where son='014';
ERROR 1054 (42S22): Unknown column 'now' in 'field list'
mysql> create event in_sl on schedule at now()+interval 10 second
-> do
-> update student
-> set sname='張思思'
-> where son='014';
Query OK, 0 rows affected (0.06 sec)
mysql> select * from student;
+-----+--------+------+---------------------+------------+
| son | sname? | sex? | birthday??????????? | sdept????? |
+-----+--------+------+---------------------+------------+
| 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 |
| 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 |
| 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 |
| 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? |
| 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 014 | 張換?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? |
| 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? |
| 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? |
+-----+--------+------+---------------------+------------+
11 rows in set (0.00 sec)
mysql> select * from student;
+-----+--------+------+---------------------+------------+
| son | sname? | sex? | birthday??????????? | sdept????? |
+-----+--------+------+---------------------+------------+
| 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 |
| 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 |
| 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 |
| 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? |
| 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 014 | 張思思 | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? |
| 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? |
| 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? |
+-----+--------+------+---------------------+------------+
11 rows in set (0.00 sec)
mysql> create event a on schedule at now()+interval 1 second
-> do
-> select * from student;
Query OK, 0 rows affected (0.00 sec)
mysql> select * from student;
+-----+--------+------+---------------------+------------+
| son | sname? | sex? | birthday??????????? | sdept????? |
+-----+--------+------+---------------------+------------+
| 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 |
| 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 |
| 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 |
| 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? |
| 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 014 | 張思思 | 男?? | 1992-02-03 00:00:00 | 信息系???? |
| 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 |
| 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? |
| 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? |
| 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? |
+-----+--------+------+---------------------+------------+
11 rows in set (0.00 sec)
mysql> show events;
Empty set (0.01 sec)
mysql> create event fa on schedule at now()+interval 1 second
-> do
-> set sname='張亞思'
-> where son='014';
ERROR 1193 (HY000): Unknown system variable 'sname'
mysql> create event fa on schedule at now()+interval 1 second
-> do
-> update student
-> set sname='張亞思'
-> where son='014';
Query OK, 0 rows affected (0.00 sec)
mysql> select * from student; +-----+--------+------+---------------------+------------+ | son | sname? | sex? | birthday??????????? | sdept????? | +-----+--------+------+---------------------+------------+ | 002 | 李四?? | 女?? | 1992-01-03 00:00:00 | 智能工程系 | | 003 | 歐陽詩 | 女?? | 1993-01-03 00:00:00 | 軟件工程系 | | 004 | 劉思?? | 女?? | 1998-03-02 00:00:00 | 軟件工程系 | | 010 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 | | 012 | 張旭?? | 男?? | 1992-03-05 00:00:00 | 智能系???? | | 013 | 張恒?? | 男?? | 1992-02-03 00:00:00 | 信息系???? | | 014 | 張亞思 | 男?? | 1992-02-03 00:00:00 | 信息系???? | | 016 | 周東?? | 男?? | 1994-02-03 00:00:00 | 軟件工程系 | | 10? | 張揚?? | 男?? | 1990-01-02 00:00:00 | 信息系???? | | 11? | 張樣?? | 男?? | 1993-01-02 00:00:00 | 智能系???? | | 22? | 陽陽?? | 男?? | 1992-01-02 00:00:00 | 軟件系???? | +-----+--------+------+---------------------+------------+ 11 rows in set (0.00 sec)
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