-- 将字段去重并合并 select concat_ws(',',collect_set(cast(id as string))) as wm from ( select 1 as id union all select 1 as id union all select 1 as id union all select 2 as id union all select 3 as id ) t1 ;
将字段去重并合并
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转载自www.cnblogs.com/chenzechao/p/11227451.html
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