The **`PI()`** function returns the value of *Pi*. 

Figure 1 shows a visual representation of the `PI()` function.

# Syntax
```sql
PI()
```
# Parameter
The `PI()` function does not require a parameter. 

# Return value
The `PI()` function returns the value of *Pi*.

> By default, the `PI()` function returns a value of *Pi* of up to 6 decimal places.  

# Code





-- simple PI() upto 6 decimal places
SELECT PI();

-- increase the number of decimal places to 10
SELECT PI() + 0.0000000000;

What is PI() in SQL?

The PI() function in SQL returns the value of Pi, accurate to 6 decimal places, without requiring parameters.