Question

I have a table with “unique“ values. The problem is that the program, which adds these values also adds 3 different postfixs to the value (2 characters in the end of the value). As a result, I have three variable with three postfixs. So i need get only unique values from bd – somehow sort it out without the last two characters. Are any ideas?

Answer 1

What Camera_id should you return (first,last,maximum,minimum???) if rows have one “unique” value but different Camera_id’s. Try something like this:

select 
LEFT(camera_name,LENGTH(camera_name)-2), max(camera_id)
from cameras
where site_id=1
group by LEFT(camera_name,LENGTH(camera_name)-2)