How to query by time in postgresql

Question

device_id	device_created_at
10e7983e-6a7b-443f-b0fe-d5e6485a502c	2022-08-10 20:55:16.695

i have a table where my date/time is of form: 2022-08-10 20:55:16.695 This is a timestampped object. I tried the following query but didn't return any rows:

select * from device where to_char(device_created_at,'YYYY-MM-DD HH24:MI:SS.FFF') = '2022-08-10 20:55:16.695'

The type of device_created_at is "timestamp without time zone"

How do i query based on timestamp in postgressql?

Answer 1

Try comparing timestamp values in place of strings:

SELECT * 
FROM device 
WHERE device_created_at = CAST('2022-08-10 20:55:16.695' AS TIMESTAMP)

Check the demo here .