如何在sql中舍入一个值，使用round函数。实际结果是555.81得到555脚本是＆＃34; round（表达式，0）＆＃34;

Question

this is the result which i used round(expression,2) when i use round(expression,0) getting 555 as answer

Answer 1

ROUND documentation on MSDN

select
  [raw]       = 555.81, 
  [rounded]   = round(555.81, 0),
  [truncated] = round(555.81, 0, 1)

结果：

|    raw | rounded | truncated |
|--------|---------|-----------|
| 555.81 |     556 |       555 |

SQL小提琴：http://sqlfiddle.com/#!6/9eecb7db59d16c80417c72d1/5290

Answer 2

我相信它正在逐渐减少。     轮（表达式+ 0.5,0） 应该工作，但我还没有测试过。