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Spark 之 built-in functions

2022-06-27 05:33:00 【zhixingheyi_tian】

explode

explode(expr) - Separates the elements of array expr into multiple rows, or the elements of map expr into multiple rows and columns. Unless specified otherwise, uses the default column name col for elements of the array or key and value for the elements of the map.

Examples:

> SELECT explode(array(10, 20));
 10
 20
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