2013年12月18日 · I want Hive to return the row with the meanDelay max value. I have: SELECT CAST(MAX(meandelay) as FLOAT) FROM flightinfo; which indeed returns the max (I use cast because my values are saved as STRING). So then: SELECT * FROM flightinfo WHERE meandelay = (SELECT CAST(MAX(meandelay) AS FLOAT) FROM flightinfo); I …

2015年7月14日 · Hive has the greatest() function as of 1.1; select ID, greatest(col1, col2, col3) as greatest_value from table; Or you can use a case when statement if your version doesn't have greatest():

2018年10月13日 · Hive - max value across columns/multiple rows. 1 “Hive” max column value from multiple columns. 1 ...

2014年5月27日 · This is a little tricky in Hive, but certainly doable. It requires two things: using your first query as an subquery for a bigger one, and a little trick to do an "arg-max".

2012年3月29日 · I have a hive table something like this: create external table test( test_id string, test_name string, description string, clicks int, last_referred_click_date string ) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' STORED AS TEXTFILE LOCATION '{some_location}';

2018年7月9日 · I want to select all rows for which the timestamp column has the maximum value. The data looks like this: A B timestamp john smith 2018 bob dylan 2018 adam levine 2017 bob ...

hive.exec.max.dynamic.partitions hive.exec.max.dynamic.partitions.pernode are meant to have them under control by limiting the number the partitions that can be created by Dynamic Partitioning. hive.exec.max.dynamic.partitions: The maximum number of partitions allowed to be created in total by one dynamic partition insert.

2017年11月15日 · Finding Max date in hive. Ask Question Asked 7 years, 4 months ago. Modified 3 days ago. Viewed 10k times ...

2016年6月28日 · I need to include NULL values while computing MAX and MIN functions in Hive. For example, if I have the table: id values A 1 B 3 C NULL then MAX(values) should return NULL.

2016年1月27日 · "In the “looser” world in which Hive lives, where it may not own the data files and has to be flexible on file format, Hive relies on the presence of delimiters to separate fields. Also, Hadoop and Hive emphasize optimizing disk reading and writing performance, where fixing the lengths of column values is relatively unimportant." from