Kohana ORM: How to query for a timestamp that's calculated based on a field in the DB

Question

Simple table:

start_date       TIMESTAMP
duration_days    INT

In English: I simply want the rows which have not passed their duration period.

In SQL:

SELECT * FROM MyTable WHERE now() < TIMESTAMPADD(DAY, duration_days, start_date);

How can I do this in Kohana/ORM? The duration is different for each of many rows I need to retrieve.

Answer 1

只需使用where()子句：

ORM::factory('MyTable')->where(DB::expr('now()'), '<', DB::expr('TIMESTAMPADD(DAY, duration_days, start_date)'))->find_all();