[英]Convert this statement to sql query
Display the package number and the number of customers for each package number, only for packages with more than 100 customers. 显示包裹号和每个包裹号的顾客数量,仅适用于拥有100个以上顾客的包裹。
SELECT pack_num, COUNT(customer)
FROM table_name
GROUP BY pack_num
HAVING COUNT(customer) >100
Is this query right? 这个查询正确吗? If not please correct me. 如果没有,请纠正我。
To count only the unique costumers you could add a DISTINCT to the COUNT . 要只计算唯一的客户,可以在COUNT上添加DISTINCT 。
SELECT pack_num, COUNT(DISTINCT customer)
FROM table_name
GROUP BY pack_num
HAVING COUNT(DISTINCT customer) >100
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