Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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1.18.0
Description
Implement the map_entries method to transform a map into an array of key-value structs.
Description: The current implementation of the map_entries method in the Flink library does not provide a way to transform a map into an array of key-value structs. This enhancement aims to add this functionality, allowing users to convert a map into a more structured format for further processing.
Syntax:
map_entries[map: Map[K, V]] -> Array[Struct<K, V>]
Arguments:
- map: The input map to be transformed.
Returns: An array of key-value structs obtained from the input map. Each struct consists of two fields: key of type K and value of type V.
Examples:
- Transforming a map into key-value structs:
input_map = [1: 'apple', 2: 'banana', 3: 'cherry'] map_entries[input_map] Output: [{'key': 1, 'value': 'apple'}, {'key': 2, 'value': 'banana'}, {'key': 3, 'value': 'cherry'}]
- Handling an empty map:
empty_map = {} map_entries[empty_map] Output: []
See also:
spark:https://spark.apache.org/docs/latest/api/sql/index.html#map_entries
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