C:\mysql\bin>mysql -u root -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.0.51b-community-nt MySQL Community Edition (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| mytest |
| tjtz |
| tjtz_148280117 |
+--------------------+
5 rows in set (0.00 sec)
mysql> create database mytest2;
Query OK, 1 row affected (0.01 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| mytest |
| mytest2 |
| tjtz |
| tjtz_148280117 |
+--------------------+
6 rows in set (0.00 sec)
mysql> use mytest2;
Database changed
mysql> create table testTable(
-> id int(4) auto_increment not null primary key,
-> name char(10) not null,
-> address char(50) default 'jinan',
-> year date);
Query OK, 0 rows affected (0.09 sec)
mysql> show tables;
+-------------------+
| Tables_in_mytest2 |
+-------------------+
| testtable |
+-------------------+
1 row in set (0.05 sec)
mysql> insert into testtable values('','zhangsan','','2011-12-29');
Query OK, 1 row affected, 1 warning (0.00 sec)
mysql> select * from testtable;
+----+----------+---------+------------+
| id | name | address | year |
+----+----------+---------+------------+
| 1 | zhangsan | | 2011-12-29 |
+----+----------+---------+------------+
1 row in set (0.00 sec)
mysql> update testtable set address='jiefang road';
Query OK, 1 row affected (0.06 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from testtable;
+----+----------+--------------+------------+
| id | name | address | year |
+----+----------+--------------+------------+
| 1 | zhangsan | jiefang road | 2011-12-29 |
+----+----------+--------------+------------+
1 row in set (0.00 sec)
mysql> insert into testtable values('','lisi',null,'2012-1-3');
Query OK, 1 row affected, 1 warning (0.00 sec)
mysql> select * from testtable;
+----+----------+--------------+------------+
| id | name | address | year |
+----+----------+--------------+------------+
| 1 | zhangsan | jiefang road | 2011-12-29 |
| 2 | lisi | NULL | 2012-01-03 |
+----+----------+--------------+------------+
2 rows in set (0.00 sec)
mysql>