Question

我正在尝试

select * from A where A.ID NOT IN (select id from B) (in sql)

filtersource= FILTER source BY ID NOT(destination.ID)

如何使用NOT IN子句或其他技术来清除一个表中使用猪的额外记录

Answer 1

是的，你可以在PIG中这样做：

filtersource= FILTER source BY NOT ID IN (your condition or joined field);

示例：

HIVE> select * from table where id NOT IN ('1','2','3');

grunt> A = LOAD 'db.table' USING org.apache.hive.hcatalog.pig.HCatLoader() AS (id:int, value:chararray);
grunt> B = FILTER A BY NOT id IN (1,2,3);

Answer 2

除了@ Rijulsahu的回答之外，您还可以使用here - 正则表达式匹配，使用MATCHES作为正则表达式。

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PIG是否有NOT IN子句

2 个答案: