我有以下select语句 FIRST_VALUE(date) OVER (PARTITION BY client_ID ORDER BY date ASC),0) AS first_conversion_date例如,我尝试过这样做: ifnull(FIRST_VALUE(date) OVER (PARTITION BY client_ID ORDER BY date ASC),0) AS first_conversion_date, 但得到以下错误: No match
我需要根据这个表准备一份报告,我只能读到: ? 这个想法是基于更高的活动标识来获得每个观察值的最后一个值。例如,观察值10对应于活动编号19。 ? 到目前为止,这是我的代码: select first_value(number) over (partition by employee order by case