# ARRAY\$1CONTAINS function
<a name="array_contains"></a>

The ARRAY\$1CONTAINS function can be used to perform basic membership checks on array data structures. The ARRAY\$1CONTAINS function is useful when you need to check if a specific value is present within an array.

## Syntax
<a name="array_contains-syntax"></a>

```
array_contains(array, value)
```

## Arguments
<a name="array_contains-arguments"></a>

 *array*  
An ARRAY to be searched.

 *value*  
An expression with a type sharing a least common type with the array elements.

## Return type
<a name="array_contains-return-type"></a>

The ARRAY\$1CONTAINS function returns a BOOLEAN. 

If value is NULL, the result is NULL. 

If any element in array is NULL, the result is NULL if value is not matched to any other element.

## Examples
<a name="array_contains-example"></a>

The following example checks if the array `[1, 2, 3]` contains the value `4`. Since the array `[1, 2, 3`] doesn't contain the value `4`, the array\$1contains function returns `false`. 

```
SELECT array_contains(array(1, 2, 3), 4)
false
```

The following example checks if the array `[1, 2, 3]` contains the value `2`. Since the array `[1, 2, 3]` does contain the value `2`, the array\$1contains function returns `true`. 

```
SELECT array_contains(array(1, 2, 3), 2);
 true
```