# parseInt
parseInt

`parseInt` parses a string to determine if it contains an integer value. This function returns all rows that contain a decimal, integer, or null value, and skips any rows that don't. If the row contains a decimal value, it is returned as the nearest integer, rounded down. For example, a value of '2.99' is returned as '2'.

## Syntax


```
parseInt(expression)
```

## Arguments


 *expression*   
The expression must be a string. It can be the name of a field that uses the string data type, a literal value like **'3'**, or a call to another function that outputs a string.

## Return type


Integer

## Example


The following example evaluates `feeType` to determine if it contains integer values.

```
parseInt(feeType)
```

The following are the given field values.

```
feeType
--------
2
2.1
2a
3
3b
(null)
5
```

For these field values, the following rows are returned.

```
2
2
3
(null)
5
```