SQL模糊查询与删除多条语句复习

string IDlist="1,2,3";

批量删除数据

StringBuilder strsql=new StringBuilder();

strSql.Append("delect from table "）;

strSql.Append("  where ID in ("+"'"+IDlist+"'"+")");
这样处理，只能删除一条数据而已

处理方法

string [] a=IDlist.Split(',');

for(int i=0;i<a.Length;i++)

{

string str=a[i];

strSql.Append("delect from table "）;

strSql.Append("  where ID in ("+"'"+str+"'"+")");

}

这样就可以遍历去删除多条数据

SQL模糊查询

select ID,HigherNumber,LevelOf,LevelName,UserID,Password,LoginIP,LastLoginTime,UserName,Status  FROM Users  where ID like '%ddd%'or HigherNumber like '%ddd%'or LevelOf  like '%ddd%' or LevelName like '%ddd%' or UserID like '%ddd%' or LoginIP like '%ddd%' or LastLoginTime like '%ddd%' or UserName like '%ddd%' or Status like '%ddd%'