HackerRank Weather Observation Station 18 problem solution

In this HackerRank Weather Observation Station 18 problem solution Consider P1(a,b) and P2(c,d) to be two points on a 2D plane.

a happens to equal the minimum value in Northern Latitude (LAT_N in STATION).

b happens to equal the minimum value in Western Longitude (LONG_W in STATION).

c happens to equal the maximum value in Northern Latitude (LAT_N in STATION).

d happens to equal the maximum value in Western Longitude (LONG_W in STATION).

Query the Manhattan Distance between points P1 and P2 and round it to a scale of 4 decimal places.

Input Format

The STATION table is described as follows:

where LAT_N is the northern latitude and LONG_W is the western longitude.

Problem solution MS SQL.

/*
Enter your query here.
Please append a semicolon ";" at the end of the query and enter your query in a single line to avoid error.
*/
select convert(decimal(10,4), abs(max(lat_n) - max(long_w)) + abs(min(lat_n) - min(long_w)))
from station;

Problem solution in Oracle.

select to_char(abs(min(lat_n) - min(long_w)) + abs( max(lat_n)  - max( long_w) ),99999999.9999) from station ;

Problem solution in DB2.

/*
    Enter your query here and follow these instructions:
    1. Please append a semicolon ";" at the end of the query and enter your query in a single line to avoid error.
    2. The AS keyword causes errors, so follow this convention: "Select t.Field From table1 t" instead of "select t.Field From table1 AS t"
    3. Type your code immediately after comment. Don't leave any blank line.
*/
select cast(round(ABS(min(lat_n) - max(lat_n)) + ABS( min(long_w)- max(long_w)), 4) as numeric(12,4))
from station;