Question

I’m trying to update on duplicate key using insert and select.

INSERT INTO f_s.s_d_p(dom,title,lastupdated)
SELECT dom AS dDom,
COUNT(db2.rets.dom) AS dcount,
NOW() AS timeNow
FROM db2.rets
GROUP BY db2.rets.dom
LIMIT 5
ON DUPLICATE KEY UPDATE title = dDom, last_updated = NOW();

but when I run the query I always get “unknown column dDom”

I tried set an alias for the select query but no luck.

Answer 1

Use field name, not alias: ON DUPLICATE KEY UPDATE title = db2.rets.dom, last_updated = NOW(); . Or do

INSERT INTO f_s.s_d_p(dom,title,lastupdated)
SELECT * FROM (
SELECT dom AS dDom,
COUNT(db2.rets.dom) AS dcount,
NOW() AS timeNow
FROM db2.rets
GROUP BY db2.rets.dom
LIMIT 5)
a
ON DUPLICATE KEY UPDATE title = a.dDom, last_updated = NOW();