Hive | map數據類型的用法

平時不多用到map類型，此次用到了記錄一下。 舉個栗子：web select mid, tags['電影'] as movie, tags['音樂'] as music from( select mid,str_to_map(concat_ws(',',collect_list(concat(key,":",value)))) as tags from ( select mid, key, con

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