> ## Documentation Index
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# RS_SquareRoot

Find Square root of band values in a geotiff image

## Signatures

```sql theme={"system"}
RS_SquareRoot (Band: ARRAY[Double])
```

## Parameters

<ParamField body="Band" type="ARRAY[Double]" required>
  The band index.
</ParamField>

## Return type

<ResponseField type="Array<Double>">
  An array of double values.
</ResponseField>

## Example

```scala theme={"system"}
val rootDF = spark.sql("select RS_SquareRoot(band) as squareroot from dataframe")
```