Here is an example that works.
This is using “group by” instead of “distinct”.
Here unique is location:
1 2 | $requestSQL = mysqli_query($connection, "SELECT state, location from postal_code where state = '$state_sql' group by location order by state ASC LIMIT 100"); |
Another example if you want to echo the id.
Here unique is name:
2 3 4 5 | $requestSQL = mysqli_query($connection, "SELECT max(id) as max, name, state, location,
MIN(id) FROM postal_codes where location = '$location_sql' and state = '$state_sql'
group by name order by name ASC LIMIT 50");
while {} |
to echo the id, use:
echo $row[‘max’];