根据MySQL中的条件仅删除表中的某些行

让我们首先创建一个表-

create table DemoTable -> ( -> Id int, -> Name varchar(20) -> );

使用insert命令在表中插入一些记录：

Insert some records in the table using insert command: insert into DemoTable values(100,Bob); insert into DemoTable values(101,Chris); insert into DemoTable values(102,David); insert into DemoTable values(103,Sam); insert into DemoTable values(104,Carol);

使用select语句显示表中的所有记录-

select *from DemoTable;

这将产生以下输出-

+------+-------+ | Id | Name | +------+-------+ | 100 | Bob | | 101 | Chris | | 102 | David | | 103 | Sam | | 104 | Carol | +------+-------+ 5 rows in set (0.00 sec)

以下是从表中仅删除有限行的查询-

delete from DemoTable -> where Id > 102;

让我们再次检查表记录-

select *from DemoTable;

这将产生以下输出-

+------+-------+ | Id | Name | +------+-------+ | 100 | Bob | | 101 | Chris | | 102 | David | +------+-------+ 3 rows in set (0.00 sec)