DELETE 声明
The DELETE statement is used to delete rows in a table.
DELETE 声明常用来删除表中的数据。
语法
DELETE FROM table_name
WHERE column_name = some_value |
Person:
| LastName |
FirstName |
Address |
City |
| Nilsen |
Fred |
Kirkegt 56 |
Stavanger |
| Rasmussen |
Nina |
Stien 12 |
Stavanger |
Delete a Row
删除一条记录
"Nina Rasmussen" is going to be deleted:
"Nina Rasmussen" 的所有个人信息将被删除：
DELETE FROM Person WHERE LastName = 'Rasmussen' |
结果
| LastName |
FirstName |
Address |
City |
| Nilsen |
Fred |
Kirkegt 56 |
Stavanger |
Delete All Rows
删除所有记录
It is possible to delete all rows in a table without deleting the table. This means that the table structure, attributes, and indexes will be intact:
可以不删除数据表且删除里面的所有记录行。这就意味着数据表构架，属性以及索引都会完整保留：
DELETE FROM table_name 或 DELETE * FROM table_name |
