How do you find the max date in Hive?
How do you find the max date in Hive?
Use built-in date functions unix_timestamp(string date, string pattern). The unix_timestamp covert a string date to unix_timestamp as int , which is comparable. Assume your table name is t and the time column is tt . As long as your date string is in a format which can be sorted lexographically, MAX should work fine.
How do I add two dates in Hive?
Adds a number of days to create_date: date_add(‘2008-12-31’, 1) = ‘2009-01-01’. select date_add(string create_date, int duration) from course; Reference: Date functions in Hive.
How does Hive define date?
Hive provides DATE and TIMESTAMP data types in traditional UNIX time stamp format for date/time related fields in hive. DATE values are represented in the form YYYY-MM-DD. Example: DATE ‘2014-12-07’. Date ranges allowed are 0000-01-01 to 9999-12-31.
How do I add one year to a date in Hive?
Also you can use your own methods to get desired result like for adding a year you can try to add 12 months in place of a year. You can use most of the DATE FORMAT combinations together to change DATE into required format. DATE_FORMAT will give correct output when your input date is in format ‘yyyy-MM-dd’.
How do I see the latest partition in hive?
select max(ingest_date) from db. table_name; This would give me the expected output.. but kill the whole point of having partitions in the 1st place.
How do I see the last time my hive was updated?
You can use to_date function in your where clause to get only the max(Last uploaded date) records.
How do I get months between two dates in hive?
- Covert date(s) to unix time stamps.
- substract higher time stamp from lower.
- result is time duration between two dates.
- divide result by (60 sec * 60 min * 24 hrs * 30 days) to get month.
How do I subtract two dates in hive?
If you need the difference in seconds (i.e.: you’re comparing dates with timestamps, and not whole days), you can simply convert two date or timestamp strings in the format ‘YYYY-MM-DD HH:MM:SS’ (or specify your string date format explicitly) using unix_timestamp(), and then subtract them from each other to get the …
How do I cast a timestamp to a date in Hive?
SELECT from_unixtime(unix_timestamp DIV 1000) as new_timestamp from raw_data That converts a unix timestamp into a YYYY-MM-DD HH:MM:SS format, then you can use the following functions to get the year, month, and day: SELECT year(new_timestamp) as year, month(new_timestamp) as month, day(new_timestamp) as day …
How do I convert a string to a date in Hive?
SELECT TO_DATE(from_unixtime(UNIX_TIMESTAMP(‘open_time’, ‘dd/MM/yyyy’))); But it returns NULL. Subsequently, my objectif is to do something like this : SELECT * FROM table_hive WHERE open_time BETWEEN ’29-MAR-17′ AND ’28-MAR-17′;
How do I cast a timestamp to a date in hive?
How do I find timestamp on hive?
Hive from_unixtime() is used to get Date and Timestamp in a default format yyyy-MM-dd HH:mm:ss from Unix epoch seconds. Specify the second argument in pattern format to return date and timestamp in a custom format.