在 AWS Athena 中减去两个时间戳列

Question

For my data on S3, I have defined a table in AWS Glue Data Catalog. This table contains two columns of Timestamp type. I want to subtract these two columns and show it as different column. I have tried the following query

SELECT  outtime, intime, outtime-intime AS length
FROM database.table
LIMIT 10

However, it gives me the following error.

SYNTAX_ERROR: line 1:66: '-' cannot be applied to timestamp, timestamp

How can I solve this problem? I am using Athena to query data in my S3.

Answer 1

You can use date_diff() , such as:

date_diff(second, intime, outtime)

This returns the result in seconds.