SQL 服务器：四舍五入并转换为 int（在 Select 内）

Question

I am using the following line within a Select which returns a number with decimals, eg 33.33333.

How can I round this within the Select and convert to integers so that I don't have decimals, eg in the above example it should return 33?

100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END) AS matchPercent

Answer 1

You can use ROUND function to round the value to integer:

ROUND(INT, 100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END), 0) AS matchPercent

This will retain the type, eg rounded float will stay float . If you also need to return int data type (or other integer data types), you need to also convert it:

CONVERT(INT, ROUND(INT, 100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END), 0)) AS matchPercent

Answer 2

使用round函数来舍入数字：

ROUND(100 * AVG(CASE WHEN col2 = col3 THEN 1.0 ELSE 0.0 END), 0) AS matchPercent

Answer 3

如果要先对数字进行舍入，然后将其转换为整数，则还可以将0.5添加到要转换为整数的数字。

Answer 4

Below statement rounds a decimal value to nearest integer

ROUND(decimalvalue,0)

ROUND(number, decimals, operation)

Example

ROUND(94.503,0)

Result: 95

Example

ROUND(94.403,0)

Result: 94