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Target customers: Alibaba Cloud MaxCompute users. Features released: The string function JSON_TUPLE and the date function EXTRACT are added. The syntax of JSON_TUPLE is STRING JSON_TUPLE(STRING json,STRING key1,STRING key2,...). This function is used to extract values for a set of keys (key1,key2,...) in a standard JSON string. The syntax of EXTRACT is INT EXTRACT( from ). This function is used to extract a part of a date.