# SQLite Math functions

SQLite is a popular relational database management system (RDBMS) that includes a variety of built-in math functions that can be used for performing arithmetic and other mathematical operations on data stored in the database. These math functions can be useful for a wide range of applications, from scientific calculations to financial analysis.

Here are some of the math functions that are available in SQLite:

### ABS(x)

The `ABS()` function returns the absolute value of the input x.

```SELECT ABS(-5); --returns 5.
```

### ROUND(x, n)

The `ROUND(x, n)` function rounds the input x to n decimal places.

`SELECT ROUND(3.14159, 2); --returns 3.14.`

### CEIL(x)

The `CEIL()` function returns the smallest integer greater than or equal to the input x.

`SELECT CEIL(2.4); --returns 3.`

### FLOOR(x)

The `FLOOR()` function returns the largest integer less than or equal to the input x.

`SELECT FLOOR(2.9); --returns 2.`

### EXP(x)

The `EXP()` function returns the value of e raised to the power of the input x.

`SELECT EXP(2); --returns 7.38905609893065.`

### LOG(x)

The `LOG(x)` function returns the natural logarithm (base e) of the input x.

`SELECT LOG(10); --returns 1.`

### POWER(x, y)

The `POWER(x, y)` function returns the value of x raised to the power of y.

`SELECT POWER(2, 3); --returns 8.`

### SQRT(x)

The `SQRT()` function returns the square root of the input x.

`SELECT SQRT(16); --returns 4.`

### SIN(x), COS(x), TAN(x)

These functions `SIN(x)`, `COS(x)`, `TAN(x)` return the sine, cosine, and tangent of the input x, respectively. For example:

```SELECT SIN(0); --returns 0.
SELECT COS(0); --returns 1.
SELECT TAN(0); --returns 0.
```

### ASIN(x), ACOS(x), ATAN(x)

These functions `ASIN(x)`, `ACOS(x)`, `ATAN(x)` return the arcsine, arccosine, and arctangent of the input x, respectively. For example:

```SELECT ASIN(0); --returns 0.
SELECT ACOS(1); --returns 0.
SELECT ATAN(0); --returns 0.
```

In addition to these basic math functions, SQLite also includes a number of more specialized math functions, such as RANDOM() for generating random numbers and RADIANS(x) and DEGREES(x) for converting between radians and degrees.

Overall, the math functions available in SQLite make it a powerful tool for performing mathematical operations on data stored in a database. Whether you’re performing scientific calculations, financial analysis, or other types of data analysis, the math functions in SQLite can help you get the job done.