题解 | 商品id数据清洗统计
商品id数据清洗统计
https://www.nowcoder.com/practice/c985ecbd820b46e6bafa858f6600126d
select substring_index(order_id,'_',-1) as product_id ,count(*) as cnt from order_log group by substring_index(order_id,'_',-1)
商品id数据清洗统计
https://www.nowcoder.com/practice/c985ecbd820b46e6bafa858f6600126d
select substring_index(order_id,'_',-1) as product_id ,count(*) as cnt from order_log group by substring_index(order_id,'_',-1)
相关推荐
查看6道真题和解析
查看4道真题和解析