Answer by Sh_coder for How to do an update + join in PostgreSQL?

WORKS PERFECT!!!

POSTGRE SQL - UPDATE With a JOIN

BELOW CODE - Check the positioning of columns and IDs as below:

If you place it exactly as below, then only it will work!

---IF you want to update This table1 using table2UPDATE table1SET attribute1 = table2.attribute2FROM table2WHERE table2.product_ID = table1.product_ID;