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mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| hwgk_db |
| mysql |
| zrcx_db |
+--------------------+
4 rows in set (0.00 sec)
mysql> user zrcx_db;
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 'user
zrcx_db' at line 1
mysql> use zrcx_db;
Database changed
mysql> selet * from tb_test;
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 'selet
* from tb_test' at line 1
mysql> select * from tb_test;
Empty set (0.04 sec)
mysql> insert into tb_test(id,firstname,lastname,email,phone)
values(id,'lining'
,'aa','aa@qq.com','123353');
Query OK, 1 row affected (0.00 sec)
mysql> select * from tb_test;
+----+-----------+----------+-----------+--------+
| id | firstname | lastname | email | phone |
+----+-----------+----------+-----------+--------+
| 1 | lining | aa | aa@qq.com | 123353 |
+----+-----------+----------+-----------+--------+
1 row in set (0.00 sec)
mysql> insert into tb_test(id,firstname,lastname,email,phone)
values(id,'lining'
,'aa','aa@qq.com','123353');
Query OK, 1 row affected (0.01 sec)
mysql> select * from tb_test;
+----+-----------+----------+-----------+--------+
| id | firstname | lastname | email | phone |
+----+-----------+----------+-----------+--------+
| 1 | lining | aa | aa@qq.com | 123353 |
| 2 | lining | aa | aa@qq.com | 123353 |
+----+-----------+----------+-----------+--------+
2 rows in set (0.00 sec)
mysql> delete from tb_test where id=2;
Query OK, 1 row affected (0.10 sec)
mysql> select * from tb_test;
+----+-----------+----------+-----------+--------+
| id | firstname | lastname | email | phone |
+----+-----------+----------+-----------+--------+
| 1 | lining | aa | aa@qq.com | 123353 |
+----+-----------+----------+-----------+--------+
1 row in set (0.00 sec)