SQL 对于有N多字段的表，踢出不需要的字段，自动频出剩余字段的SQL语句

--本例采用northwind数据库的Employees 表，拼出不包括title和firstName 两个字段的SQL 语句

--select * from Employees

 

declare @index int --默认循环起始值1
declare @ExceptName varchar(200)--要排除的字段名称
declare @indexString int--索引值
declare @InTable varchar(200) --要拼串的表
declare @sql varchar(600) --频出的sql语句
select @ExceptName='title,firstName',@index=1,@sql='select ',@InTable='Employees',@indexString=0 --初始化条件

 
 begin
     declare @tempStr nvarchar(800)
     declare myCur cursor for ( select name from syscolumns where id=object_id(N''+@InTable+'') )
     open myCur
     fetch next from myCur into @tempStr
     while @@fetch_status = 0
     begin
        
  set @tempStr=@tempStr
  set @indexString=CHARINDEX(@tempStr, @ExceptName)
  if(@indexString=0)
  set @sql=@sql+@tempStr+','
  
   fetch next from myCur into @tempStr
      end
      close myCur
      deallocate myCur
end
 SELECT @sql=SUBSTRING(@sql,1,(len(@sql)-1))
set @sql=@sql+' from  '+@InTable
select @sql

 

 

--再判断两个字段 名称相同的问题上，还是有点问题的，再考虑

select EmployeeID,LastName,TitleOfCourtesy,BirthDate,HireDate,Address,City,Region,PostalCode,Country,HomePhone,Extension,Photo,Notes,ReportsTo,PhotoPath from  Employees

转载于:https://www.cnblogs.com/kaixinmenghuan/archive/2011/08/22/2148900.html