I have two land use maps for London which have an overlapped area.
Can I use the st_union function in postgis to join them together?
The attribute table contains information includes legends and building heights.
Will this method affect my features?
For example, in the overlapped area, will the build heights become 2 times of the original?
Data from postgres have the same columns and same type of data.
After using @CL.'s method, I got this map. Only some features near the boundaries were deleted which needed to be fixed.