Scans through the given array from the first to the last element and replaces array[i] with array[i - 1] if the <function> returns 0. The first element of the given array is not replaced. The Lambda function <function> is mandatory.

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Syntax

ARRAY_FILL(<function>, <array>)

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Parameters

ParameterDescriptionSupported input types
<function>A Lambda function used to check elements in the array.Any Lambda function
<array>The array to be evaluated by the function.Any array

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Return Type

ARRAY of the same type as the input array

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Example

The following example returns an array where all values are greater than 1: 
SELECT
	ARRAY_FILL(x -> x > 0, [ 1, 2, 3, 9 ]) AS levels;
Returns: 1,2,3,9