前台是extjs 后台c# 接收前台的start 和limit参数 进行分页 翻页
sql语句如下
- SQL code
select top " + limit + " * from View_jydhwxx where fgsbm in (" + fgsbm + ") and jhrq >= '" + jdsj1 + "' and jhrq <= '" + jdsj2 + "' and jydbh not in(select top " + start + " jydbh from View_jydhwxx where fgsbm in (" + fgsbm + ") and jhrq >= '" + jdsj1 + "' and jhrq <= '" + jdsj2 + "' order by jydbh desc) order by jydbh desc以上的语句是没有问题的 速度也还可以接受 ，但是 现在我又在上面的语句中加入了一个条件 dzzbm in ("+result+") 如 dzzbm in (001,002,003,004,005,006,007....)
变成了
- SQL code
select top " + limit + " * from View_jydhwxx where fgsbm in (" + fgsbm + ") and dzzbm in ("+result+") and jhrq >= '" + jdsj1 + "' and jhrq <= '" + jdsj2 + "' and jydbh not in(select top " + start + " jydbh from View_jydhwxx where fgsbm in (" + fgsbm + ") and dzzbm in ("+result+") and jhrq >= '" + jdsj1 + "' and jhrq <= '" + jdsj2 + "' order by jydbh desc) order by jydbh desc现在问题来了 速度很慢
应该如何优化？？
------解决方案--------------------
- C# code
string sql="select * from ( select row_number() over(order by name) rn,* from View_jydhwxx where fgsbm in (" + fgsbm + ") and jhrq >= '" + jdsj1 + "' and jhrq <= '" + jdsj2 + "' order by jydbh desc) t where rn between " + start + " and " + start+limit;