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[Doc]modify pmod radians random #1940

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@xiaozhuoyang xiaozhuoyang commented Jan 24, 2025

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## 描述

返回模运算 x mod y 在模系中的最小正数解。具体而言,通过计算 (x % y + y) % y 得出结果。
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将具体而言改成即
即通过计算 (x % y + y) % y 得出结果。


- 不传参时:返回0-1之间的随机数。

- 传入单个参数`seed`时:根据传入的种子值`seed`,产生相同的随机数。
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说明返回 0-1 之间的随机数

`DOUBLE random()`
返回0-1之间的随机数。
```sql
RANDOM()
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RANDOM() -- 返回 0-1 之间的随机数
这里还是建议把注释放在后面

@KassieZ KassieZ added the has comments Some comments not resolved yet label Jan 24, 2025
Signed-off-by: leozhuo <[email protected]>
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