sql获取两个数字之间的随机数的方法

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2024年4月3日发(作者：)

sql获取两个数字之间的随机数的方法

When it comes to generating a random number in SQL that falls

within a specific range, there are a few different approaches you can

take. One common method is to use the RAND() function along with

some arithmetic to scale the random number to fit within the desired

range. This involves multiplying the result of RAND() by the size of

the range and adding the minimum value to ensure that the random

number is within the specified bounds.

在SQL中生成一个落在特定范围内的随机数时，有几种不同的方法可以采

用。其中一种常见的方法是使用RAND()函数以及一些算术运算来调整随机

数的范围。这涉及将RAND()的结果乘以范围的大小，并添加最小值，以确

保随机数落在指定的范围内。

Another option is to use a combination of FLOOR(), RAND(), and

multiplication to accomplish the same goal. By multiplying the result

of RAND() by the range and then using the FLOOR() function to

truncate any decimal places, you can generate a random integer

within the desired range. This method can be particularly useful

when you need a whole number rather than a decimal.

另一个选择是使用FLOOR()、RAND()和乘法的组合来实现相同的目标。通

过将RAND()的结果乘以范围，然后使用FLOOR()函数来截断任何小数位，

您可以生成一个落在期望范围内的随机整数。当您需要整数而不是小数时，

这种方法尤其有用。

If you're looking for a more streamlined approach, you can also

consider using the ROUND() function in combination with RAND().

This method involves dividing the result of RAND() by the size of the

range, adding the minimum value, and then rounding the result to

the nearest whole number. While this may not be as straightforward

as some other methods, it can be a useful option when you need to

round the random number to the nearest whole integer.

如果您正在寻找一个更简单的方法，您还可以考虑使用ROUND()函数与

RAND()结合使用。这种方法涉及将RAND()的结果除以范围的大小，加上

最小值，然后将结果四舍五入到最接近的整数。虽然这可能不像其他一些方

法那样直接，但在需要将随机数四舍五入到最接近的整数时，这可能是一个

有用的选择。

It's important to keep in mind that generating random numbers in

SQL can be quite different from other programming languages. SQL

is primarily designed for working with databases and manipulating

data, so its approach to generating random numbers may not be as

flexible or feature-rich as languages like Python or Java. However,

with some creativity and manipulation of built-in functions, you can

still achieve your desired outcome.

需要牢记的是，在SQL中生成随机数可能与其他编程语言大不相同。SQL

主要用于处理数据库和操纵数据，因此它生成随机数的方法可能不像

Python或Java等语言那样灵活或富有特色。然而，通过一些创造力和对内

置函数的操作，您仍然可以实现您期望的结果。

In conclusion, there are various methods available for generating

random numbers within a specific range in SQL. From using the

RAND() function with arithmetic operations to combining FLOOR(),

RAND(), and multiplication, there are multiple approaches you can

take to achieve your desired outcome. Whether you need a decimal

or whole number, there is a method that can meet your

requirements. While SQL may not offer the same level of flexibility as

other programming languages, with some creativity and ingenuity,

you can still generate random numbers efficiently and effectively.

总之，在SQL中有各种方法可用于生成特定范围内的随机数。无论是使用

RAND()函数与算术运算，还是结合FLOOR()、RAND()和乘法，您都可以

采取多种方法来实现您期望的结果。无论您需要小数还是整数，都有一种方

法可以满足您的需求。虽然SQL可能不像其他编程语言那样提供同样灵活

的灵活性，但凭借一些创造力和智慧，您仍然可以高效有效地生成随机数。

本文标签： 范围方法使用函数结果