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) product_id, count(*) cnt from order_log group by product_id order by cnt desc limit 1
商品id数据清洗统计
https://www.nowcoder.com/practice/c985ecbd820b46e6bafa858f6600126d
select substring_index(order_id,'_',-1) product_id, count(*) cnt from order_log group by product_id order by cnt desc limit 1
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