多条件查询

以后我们做多条件查询,一种是排列结合,另一种是动态拼接SQL

如:我们要有两个条件,一个日期@addDate,一个是@name

第一种写法是

  if (@addDate is not null) and (@name <> '')  select * from table where addDate = @addDate and name = @name  else if (@addDate is not null) and (@name ='')  select * from table where addDate = @addDate   else if(@addDate is null) and (@name <> '')  select * from table where and name = @name  else if(@addDate is null) and (@name = '')  select * from table   

第二种就是动态组成SQL,通过exec来执行,我就不写,

昨天我想到一种办法

  select * from table where (addDate = @addDate or @addDate is null) and (name = @name or @name = '')

结果一调试,成功,

一点想法,有更好方法的,请指教!~

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