JSON_ARRAY_TRANSFORM (Lakehouse v1)

Transforms each element of a JSON array using a specified transformation Lambda expression. For more information about Lambda expression, see Lambda Expressions.

SQL Syntax

JSON_ARRAY_TRANSFORM(<json_array>, <lambda_expression>)

Aliases

• JSON_ARRAY_APPLY
• JSON_ARRAY_MAP

Return Type

JSON array.

SQL Examples

In this example, each numeric element in the array is multiplied by 10, transforming the original array into [10, 20, 30, 40]:

SELECT JSON_ARRAY_TRANSFORM(
    [1, 2, 3, 4]::JSON,
    data -> (data::Int * 10)
);

-[ RECORD 1 ]-----------------------------------
json_array_transform([1, 2, 3, 4]::VARIANT, data -> data::Int32 * 10): [10,20,30,40]