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从MySQL表中删除WHERE列等于值AND column2等于value2吗？

2024-04-17 05:10:03 417

让我们首先创建一个表-

mysql> create table DemoTable722 (
   StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   StudentName varchar(100),
   StudentAge int
);

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable722(StudentName,StudentAge) values('Chris Brown',23) ;
mysql> insert into DemoTable722(StudentName,StudentAge) values('John Smith',21);
mysql> insert into DemoTable722(StudentName,StudentAge) values('David Miller',22);
mysql> insert into DemoTable722(StudentName,StudentAge) values('Adam Smith',20);
mysql> insert into DemoTable722(StudentName,StudentAge) values('Carol Taylor',24);

使用select语句显示表中的所有记录-

mysql> select *from DemoTable722;

这将产生以下输出-

+-----------+--------------+------------+
| StudentId | StudentName  | StudentAge |
+-----------+--------------+------------+
| 1         | Chris Brown  | 23         |
| 2         | John Smith   | 21         |
| 3         | David Miller | 22         |
| 4         | Adam Smith   | 20         |
| 5         | Carol Taylor | 24         |
+-----------+--------------+------------+
5 rows in set (0.00 sec)

以下是要从MySQL表中删除的查询WHERE列等于值ANDcolumn2等于value2-

mysql> delete from DemoTable722 where StudentId=3 and StudentName='David Miller';

让我们再次检查表记录-

mysql> select *from DemoTable722;

这将产生以下输出-

+-----------+--------------+------------+
| StudentId | StudentName  | StudentAge |
+-----------+--------------+------------+
| 1         | Chris Brown  | 23         |
| 2         | John Smith   | 21         |
| 4         | Adam Smith   | 20         |
| 5         | Carol Taylor | 24         |
+-----------+--------------+------------+
4 rows in set (0.00 sec)

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从MySQL表中删除WHERE列等于值AND column2等于value2吗？

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