使用Proc SQL计算相关查询

Question

我有一个表master_t，其中包含customer_id和product_id以及flyer_section

我想算一下经常＆＃34;回来＆＃34;每个customer_id出现，到目前为止我有

proc sql
create table cust as
select
    distinct customer_id
    count((select(flyer_section from master_t where master_t.customer_id = distinct master_t.customer_id and flyer_section = 'back'))
from master_t
;
quit proc sql

我收到语法错误，我不确定它是否会起作用

谢谢。

Answer 1

对于您的查询，不应该这样的工作吗？

create table cust as
select
    customer_id
    count(flyer_section) as BackCount
from master_t
where upper(flyer_section) = 'BACK' 
      or lower(flyer_section) = 'front' 
      or lower(flyer_section) = 'inside'
group by customer_id