Question:

I'm trying to create a report that includes information from a custom date field:

SELECT DATE_FORMAT(tickets.custom_data[1]), '%Y-%m-%d') AS 'Date'

However, the result table only displays None for that column. How can I fix this?

Answer:

Custom date fields contain integer timestamp values, so before you use the DATE_FORMAT function, you first have to convert to real dates using FROM_UNIXTIME:

DATE_FORMAT(FROM_UNIXTIME(tickets.custom_data[1]), '%Y-%m-%d') AS 'Date'