Update another table if conditions are met - mysql

Question

as I'm working on a small app for managing metadata and I was wondering if it is possible to insert row in another table if conditions are met.
Let me follow with example: So, let's say we have table ispu_plan
CREATE TABLE `ispu_plan` (
`id` int(11) NOT NULL,
`id_jls` int(11) NOT NULL,
`id_razina_plan` int(11) NOT NULL,
`id_revizija` int(11) NOT NULL,
`naziv_plan` varchar(150) NOT NULL,
`ispu_naziv` varchar(100) NOT NULL,
`id_mjerilo` int(11) NOT NULL,
`datum_donosenja_plana` date DEFAULT NULL,
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
and as I'm updating table ispu_plan I want to update another table (e.g. ispu_plan_updated) if certain conditions are met in ispu_plan with same rows from table ispu_plan
Using this query:
SELECT * FROM ispu_plan WHERE datum_donosenja_plana BETWEEN '2014-01-01' AND CURDATE()
I want to insert row in table ispu_plan_updated. Is something like this possible and can I insert rows in ispu_plan_updated using views?
Thank you

Answer 1

You can use a trigger to achieve that:
DROP TRIGGER IF EXISTS ispu_plan_trigger;
DELIMITER |
CREATE TRIGGER ispu_plan_trigger AFTER UPDATE ON ispu_plan
FOR EACH ROW BEGIN
-- example condition with update:
IF NEW.datum_donosenja_plana >= '2017-01-01' THEN
UPDATE ispu_plan_updated SET naziv_plan = 'some_value' WHERE id = NEW.id
LIMIT 1;
END IF;
END;
DELIMITER ;