---
{
    "title": "pmod",
    "language": "zh-CN"
}
---

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# pmod

## description
### Syntax

`BIGINT PMOD(BIGINT x, BIGINT y)`
`DOUBLE PMOD(DOUBLE x, DOUBLE y)`
返回在模系下`x mod y`的最小正数解.
具体地来说, 返回 `(x%y+y)%y`.

## example

```
MySQL [test]> SELECT PMOD(13,5);
+-------------+
| pmod(13, 5) |
+-------------+
|           3 |
+-------------+
MySQL [test]> SELECT PMOD(-13,5);
+-------------+
| pmod(-13, 5) |
+-------------+
|           2 |
+-------------+
```

## keyword
	PMOD