Question

I just added new table in my database to track image views.. like so

viewcount 
DATE 
IMAGE_ID 
NUMVIEWS

I don’t know how in the world to add the old views that I tracked before, which was just a column Views in the image table like so..

imageTable
IMAGE_ID 
NUMVIEWS  // 2654 or whatever

I want to add them all as an arbitrary date.
ex: 12/21/2012
seems so complicated.. maybe should just reset all views and go on with the new table

Answer 1

Just INSERT them from the old table?

INSERT INTO viewcount (date, image_id, numviews)
SELECT '2012-12-21' AS date, image_id, numviews FROM imageTable

If you want to update the actual numviews you can try:

UPDATE viewcount 
LEFT JOIN imageTable ON imageTable.image_id = viewcount.image_id
SET viewcount.numviews = viewcount.numviews + imageTable.numviews

Be aware that this will update records for any date.