在Pig中使用多个条件过滤列

Question

我需要编写一个猪脚本，在这里我找到几列的平均值并只获取所有列值大于计算平均值的那些行。我的脚本是：

i2 = GROUP i1 all; 
i3 = FOREACH i2 GENERATE AVG(i1.user_followers_count) AS avg_user_followers_count, AVG(i1.avl_user_follower_following_ratio) AS avg_avl_user_follower_following_ratio, AVG(i1.user_total_liked) AS avg_user_total_liked, AVG(i1.user_total_posts) AS avg_user_total_posts, AVG(i1.user_total_public_lists) AS avg_user_total_public_lists, AVG(i1.avl_user_total_retweets) AS avg_avl_user_total_retweets, AVG(i1.avl_user_total_likes) AS avl_user_total_likes, AVG(i1.avl_user_total_replies) AS avg_avl_user_total_replies, AVG(i1.avl_user_engagements) AS avl_avl_user_engagements, AVG(i1.user_reply_to_reply_count) AS avg_user_reply_to_reply_count; 

top_inf = FILTER i1 BY (i1.user_followers_count > i3.avg_user_followers_count, i1.avl_user_total_retweets > i3. avg_avl_user_total_retweets, i1.avl_user_total_likes > i3.avg_avl_user_total_retweets); 

但是，这将引发一个错误：

ERROR 1200: <file user.pig, line 70, column 103> mismatched input '>' expecting RIGHT_PAREN 

什么是取决于多个条件过滤行的路吗？

Answer 1

使用和分离的条件

top_inf = FILTER i1 BY (i1.user_followers_count > i3.avg_user_followers_count) 
        AND (i1.avl_user_total_retweets > i3.avg_avl_user_total_retweets) 
        AND (i1.avl_user_total_likes > i3.avg_avl_user_total_retweets);