I have the date string in the form: 2019-02-18 09:17:31.260000+00:00 and I am trying to convert it into date in Athena.
I have tried converting into timestamp as suggested in the SO answers but failed. There is a discussion in https://github.com/prestodb/presto/issues/10567 but no answer to this particular date format.
I tried several format like 'YYYY-MM-dd HH:mm:ss.SSSSSSZ' but doesn't work and get error like INVALID_FUNCTION_ARGUMENT: Invalid format:..is malformed at "+00:00".
Been stuck for a while, any help is appreciated!
Athena is based on a very old version of Presto, and there is no straightforwad way of doing that with some string manipulation trick. For instance, you can use regexp_replace to extract the part of the string that's compatible with the built-in timestamp with timezone type and do:
SELECT cast(regexp_replace('2019-02-18 09:17:31.260000+00:00','(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3})\d{3}(.*)', '$1$2') AS timestamp with time zone)
Recent versions of Trino (formerly known as PrestoSQL) introduced support for variable-precision temporal types with up to nanosecond precision (12 decimals).
With that feature, you can just do:
trino> select cast('2019-02-18 09:17:31.260000+00:00' as timestamp(6) with time zone);
_col0
--------------------------------
2019-02-18 09:17:31.260000 UTC
(1 row)