火花错误：java.lang.RuntimeException：[5.52]故障：预计会出现``工会''，但`（'

Question

下面的查询正在针对db工作，但给出错误为：

  

“ java.lang.RuntimeException：[5.52]错误：预期为“工会”，但   `（'“ sum（如果action ='purchase，则1否则0结束的情况）作为purchase_count，

代码：

val activityByProduct = SQLContext.sql("""
    SELECT
        product,
        timestamp_hour
        sum(case when action = 'purchase' then 1 else 0 end) as purchase_count,
        |sum(case when action = 'add_to_cart' then 1 else 0 end) as add_to_cart,
        |sum(case when action = 'page_view' then 1 else 0 end) as page_view
    |from activity
    |group by product,timestamp_hour """)

如果我缺少某些东西，请有人帮助我。 谢谢

Answer 1

«timestamp_hour»后缺少昏迷。

SELECT
       product,
       timestamp_hour,<— HERE
        sum(case when action = 'purchase' then 1 else 0 end) as purchase_count,

还应删除所有« »您查询的字符