delete from的意思|示意
删除;从……上删掉
delete from的用法详解
delete from语句用于从数据库中删除表中的数据,它的语法如下:
DELETE FROM 表名 WHERE 列名 = 值
其中表名为要操作的表,列名是要操作的字段,值是要操作的字段的值。
使用delete from语句可以删除满足条件匹配的数据,它不仅仅可以删除一条数据,还可以连续删除多条数据,比如:
delete from student where age > 20
这条语句会删除student表中age字段值大于20的所有数据。
另外,也可以使用delete from语句删除所有数据,比如:
delete from student
这条语句会删除student表中的所有数据。
总结:delete from语句用于从数据库中删除表中的数据,可以连续删除多条满足条件匹配的数据,也可以删除所有表中的数据。
delete from相关短语
1、 Delete from Disk 从磁盘删除,从宿主机磁盘中删除虚拟机文件,删除
2、 delete from tabname 删除数据
3、 delete from students 删除表中的所有数据
4、 Delete from folder 删除文件夹
5、 delete from kingkey 删除关键字统计
6、 delete from table 删除旧记录,表记录删除
7、 delete from kingbot 删除爬虫记录
8、 delete from kinglog 删除系统日志
9、 delete from kingbrow 删除浏览器统计
delete from相关例句
To remove an NI - DAQmx simulated device , right - click the device and click Delete from the pop - up menu.
如果要移除 NI -DAQmx模拟设备, 在该设备图标上单击右键,并在弹出菜单中选择Delete即可.
互联网
Add, edit or delete from the list.
增加, 编辑或来自列表的划除.
互联网
Select the file search in the Launch Conditions Editor, and choose Delete from the Edit menu.
在“启动条件编辑器”中选定该文件搜索, 然后从“编辑”菜单中选择“删除”.
互联网
Select the project output in the File System Editor, and choose Delete from the Edit menu.
在[档案系统编辑器]内选取专案输出, 然后从[编辑]功能表上选择[删除].
互联网
DELETE FROM statement is used to delete records from a database table.
DELETEFROM语句是用来从数据库表中删除记录行的.
互联网
Select a page to delete from the Meeting Workspace.
选择要从会议工作区中删除的网页.
互联网