问题描述
当我使用DataFlow作业执行BigQuery查询时，作为结果，我得到的TableRow对象没有返回那些属于记录类型列的列(已展平)
When I am executing BigQuery query using DataFlow job then the TableRow Object which I am getting, as a result, is not returning those columns which are a record type column (Flatten out)
Java代码:
p.apply(BigQueryIO.Read.fromQuery(getQuery()))
查询:
选择BASM.，BAS. FROM (从(FLATTEN([data.base_audience_segment_map20160817]，user_ids.rmId)中选择user_ids.rmId AID，id，user_ids.regis，segment_id)) 加入
(从[data.base_audience_segments]中选择类别，子类别，类型，名称，segment_id，last_compute_day，描述) 在 BASM.segment_id = BAS. segment_id按BASM.AID，BASM.id限制100的顺序
SELECT BASM.,BAS. FROM (Select user_ids.rmId AID, id, user_ids.regis, segment_id from(FLATTEN( [data.base_audience_segment_map20160817], user_ids.rmId)) ) BASM join
(Select category, sub_category, type, name, segment_id, last_compute_day, description from [data.base_audience_segments]) BAS on BASM.segment_id=BAS. segment_id order by BASM.AID,BASM.id limit 100
如果在上面的查询中看到user_ids.rmId是重复记录类型列.
If you see in the above query user_ids.rmId is a Repeatable record type column.
预先感谢
推荐答案
我认为默认行为是，如果您的查询返回的列的空值大于TableRow对象下该列的空值，则该
I think the default behaviour is if your query is returning null values for a column than that column will not be visible under TableRow object
这篇关于TableRow对象未返回dataFlow作业中的记录类型列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！