人才网查找职位的复杂SQL用法

        职位订阅表保存的查询条件是 24008,31323

要查询该条件的数据:实现方法：

一：自定义分割函数：

Create  function   [F_Split](@c varchar(4000) , @split varchar(2))  
  returns @t table(col varchar(256))  
  as  
    begin  
      while(charindex(@split,@c)<>0)  
        begin  
          insert  @t(col)  values  (substring(@c,1,charindex(@split,@c)-1))  
          set @c  = stuff(@c,1,charindex(@split,@c),'')  
        end  
      insert @t(col) values (@c)  
      return  
    end  

二：判断用逗号隔开的变量是否存在集合中

create function   [dbo].[checkStringTostring](@datas   varchar(200),@values    varchar(200))  
  returns   bit 
  as  
     begin  
  declare @tmpcount int
  set @tmpcount=0
  declare @tmpstr varchar(50)
  
  declare mycur cursor for
  select col from dbo.f_split(@datas,',')
  open mycur

  fetch next from mycur into @tmpstr
  WHILE @@FETCH_STATUS = 0
   begin
    if len(@tmpstr)=4
     begin
     select @tmpcount=count(*) from dbo.f_split(@values,',') where substring(col,1,4)=@tmpstr
      if(@tmpcount>0)
       begin
        CLOSE mycur               
        DEALLOCATE mycur
        return 1
       end
     end
    else
     begin
     select @tmpcount=count(*) from dbo.f_split(@values,',') where col=@tmpstr
      if(@tmpcount>0)
       begin
        CLOSE mycur               
        DEALLOCATE mycur
        return 1
       end
     end
    fetch next from mycur into @tmpstr
   end

  declare mycur2 cursor for
  select col from dbo.f_split(@values,',') where len(col)=4
  open mycur2

  fetch next from mycur2 into @tmpstr
  WHILE @@FETCH_STATUS = 0
   begin
     select @tmpcount=count(*) from dbo.f_split(@datas,',') where substring(col,1,4)=@tmpstr
      if(@tmpcount>0)
       begin
        CLOSE mycur               
        DEALLOCATE mycur
        CLOSE mycur2               
        DEALLOCATE mycur2
        return 1
       end
   fetch next from mycur2 into @tmpstr
   end
  
 CLOSE mycur               
 DEALLOCATE mycur
 CLOSE mycur2               
 DEALLOCATE mycur2
     return 0;
    end  

三。用SQL语句实现：

  select * from job_officelist where dbo.checkStringTostring(GWCode,'24008,22008')=1