Question

I just created a new GEOMETRY column p and need to populate values for all existing rows in the table for p based on existing values in cols lat and lng.

Problem: Updating a single column using the query below works well because I typed in the lat and lng values manually. But when I want MySQL to update col p for all rows in the tables, the query that I used does not set any values to col p. I think it has to do with the sub-query (?), but I am not sure how to make it work properly. Thanks!

Query that works

UPDATE listings 
SET p = GeomFromText('POINT(39.948177 -75.174324)') 
WHERE listing_id = '585221';

Query that sets no value

Added a WHERE clause so I dont destroy the entire table when testing. I actually want to do the UPDATE query for ALL rows in the table

UPDATE listings 
SET p = GeomFromText('POINT(lat lng)') 
WHERE listing_id = '585221';

Answer 1

and what about this (remove the geomfromtext function)

UPDATE listings
SET p = POINT(lat, lng)
WHERE listing_id = ‘585221’;

or you can go like this

UPDATE listings SET p = GeomFromText(CONCAT(‘POINT(‘,lat,’ ‘,lng,’)’));