How to convert a string to timestamp with milliseconds in Hive?

0 votes

I have a string '20141014123456789' which represents a timestamp with milliseconds that I need to convert to a timestamp in Hive (0.13.0) without losing the milliseconds.

I tried this but unix_timestamp returns an integer, so I lose the milliseconds:

from_unixtime(unix_timestamp('20141014123456789', 'yyyyMMddHHmmssSSS'))      >> 2014-10-14 12:34:56    

Casting a string works:

cast('2014-10-14 12:34:56.789' as timestamp)      >> 2014-10-14 12:34:56.789

but my string isn't in that form.

I think I need to reformat my string from '20141014123456789' to '2014-10-14 12:34:56.789'. My challenge is how to do that without a messy concatenation of substrings

Oct 31, 2018 in Big Data Hadoop by Frankie
• 9,810 points
9,057 views

1 answer to this question.

0 votes

 concatenation of substrings using the following code:

select cast(regexp_replace('20141014123456789', 
                           '(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{3})',
                           '$1-$2-$3 $4:$5:$6.$7') as timestamp) 
answered Oct 31, 2018 by Neha
• 6,280 points

Related Questions In Big Data Hadoop

0 votes
1 answer

How to get the column name printed in a file along with the output in Hive?

Hi @Neethu, Regarding your query, I would suggest ...READ MORE

answered Jul 2 in Big Data Hadoop by Gitika
• 33,930 points
90 views
0 votes
1 answer

How to write a file in hdfs with Java?

You could pass the URI when getting ...READ MORE

answered Sep 26, 2018 in Big Data Hadoop by digger
• 26,670 points
1,381 views
0 votes
1 answer

Hadoop Hive: How to split string in Hive?

You can use the split function along ...READ MORE

answered Nov 6, 2018 in Big Data Hadoop by Omkar
• 69,020 points
6,436 views
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,920 points
5,524 views
+1 vote
11 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyF ...READ MORE

answered Dec 7, 2018 in Big Data Hadoop by Aditya
34,273 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,310 points
2,075 views
0 votes
1 answer
0 votes
1 answer

How to create a project for the first time in Hadoop.?

If you want to learn Hadoop framework ...READ MORE

answered Jul 26, 2018 in Big Data Hadoop by Neha
• 6,280 points
221 views
0 votes
1 answer

How to count lines in a file on hdfs command?

Use the below commands: Total number of files: hadoop ...READ MORE

answered Aug 10, 2018 in Big Data Hadoop by Neha
• 6,280 points
8,187 views