distance between two longitude and latitude - sql-server-2008

Question

How should I write query for this?
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 maximum value in Northern Latitude
(LAT_N in STATION)
c happens to equal the minimum value in Western
Longitude (LONG_W 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.
Table STATION(ID number, CITY varchar2(21), STATE varchar2(2), LAT_N number, LONG_W number)
this is my try but returns NULL
select
2 * 3961 * asin(power(sqrt((sin(radians(MAX(LAT_N) - MIN(LAT_N)) / 2) )) , 2 ) + cos(radians(MAX(LAT_N))) * cos(radians(MIN(LAT_N))) * power(sqrt((sin(radians(MAX(LONG_W) - MIN(LONG_W)) / 2) )) , 2 )) as distance from station where city like 'manhattan';
any idea will be appreciated

Answer 1

For MySQL,
SELECT ROUND(ABS(MIN(LAT_N) - MAX(LAT_N)) + ABS(MAX(LONG_W) - MIN(LONG_W)),4) FROM STATION

Answer 2

For SQL server you can use the following query:
SELECT convert(decimal(10,4),ABS(MIN(LAT_N)-MAX(LAT_N)) + ABS(MIN(LONG_W)-MAX(LONG_W))) FROM STATION

Answer 3

Instead of reinventing the wheel, you can make use of the SQL Server geography data types. These data types are present as of version 2008, and there are functions is there to do in exactly what you're trying to do without all of the math involved.
Take a look at this example (there's far too much to include here) or look up more information on MSDN.

Answer 4

Manhattan Distance (Taxicab Geometry)
Manhattan Distance between points P1(a,b) and P2(c,d)= |a-c|+|b-d|
--a= min(LAT_N)
--b= max(LAT_N)
--c= min(LONG_W)
--d= max(LONG_w)
SELECT ROUND(ABS(MIN(LAT_N) - MIN(LONG_W)),4) + ROUND(ABS(MAX(LAT_N) - MAX(LONG_W)),4) FROM STATION;

Answer 5

You can use this maths formula to get the straight distance between two points:
Distance = squarerootof((x2−x1)^2+(y2−y1)^2)

Answer 6

select round(abs(min(lat_n)- max(lat_n)) + abs(min(long_w)- max(long_w)),4) from station;

Answer 7

Declare #a float, #b float, #c float, #d float;
SET #a =(select LAT_N from station where LAT_N = (select min(LAT_N) from station) )
SET #b =(select LONG_W from station where LONG_W =(Select min(LONG_W) from station) )
SET #c= (select LAT_N from station where LAT_N = (select max(LAT_N) from station) )
SET #d= (select LONG_W from station where LONG_W = (select max(LONG_W) from station) )
select cast(ROUND((abs(#a -#c)+ abs(#b - #d)),4) as decimal(12,4))

Answer 8

Easiest way of doing this problem is
Using mathematics function [ Dis. = sqrt((x2−x1)^2+(y2−y1)^2) ], try:
for sql server:
select format(abs(min(LAT_N)-max(LAT_N))+abs(min(long_w)-max(long_w)),'.####') from station;
or
select format(sqrt(square(min(LAT_N)-max(LAT_N))+square(min(long_w)-max(long_w))),'.####') from station;
for SQL:
SELECT ROUND(ABS(MIN(LAT_N)-MAX(LAT_N)) + ABS(MIN(LONG_W)-MAX(LONG_W)), 4) FROM STATION;
for simplicity to understand:
select
round(
abs(
min(lat_n)- max(lat_n)
) + abs(
min(long_w)- max(long_w)
), 4
)
from
station;

Answer 9

Here: a=MIN(LAT_N) c=MAX(LAT_N) b=MIN(LONG_W) d=MAX(LONG_W)
#Query for obtaining Manhattan distance is:
SELECT ROUND(ABS(MIN(LAT_N)-MAX(LAT_N))+ABS(MIN(LONG_W)-MAX(LONG_W)),4) FROM STATION;

Answer 10

You can use the code below using Oracle.
SELECT
ROUND(ABS(MIN(LAT_N) - MAX(LAT_N)) + ABS(MIN(LONG_W) - MAX(LONG_W)) , 4)
FROM STATION;

Answer 11

According to the question, they are asking to find Manhattan Distance but you are trying to find Euclidean distance between two points. Both of them are different
Manhattan Distance:
|X1 - X2| + |Y1 - Y2|
Euclidean Distance:
sqrt((X2−X1)^2+(Y2 −Y1)^2)
select Format(ABS(MIN(LAT_N)-MAX(LAT_N)) + ABS(MIN(LONG_W)-MAX(LONG_W)),'.####') from STATION;

Answer 12

Euclidean distance between two points. Both of them are different.
Manhattan Distance:
|X1 - X2| + |Y1 - Y2|
select round((max(lat_n)-min(lat_n))+(max(long_w)-min(long_w)),4)
from station

Answer 13

For whatever reason, the compiler seems to ignore the ROUND() function and still output all the decimal places. I used the SUBSTR() function to work around this bug. So the query would look like:
select substr((ABS(MAX(LAT_N) - MIN(LAT_N)) + ABS(MAX(LONG_W) - MIN(LONG_W))), 1, 8) FROM STATION;

Answer 14

I tried this one for MYSQL:
CREATE TABLE points (
a DECIMAL(10,4),
b DECIMAL(10,4),
c DECIMAL(10,4),
d DECIMAL(10,4));
INSERT INTO points VALUE ((SELECT MIN(lat_n) FROM station),
(SELECT MIN(long_w) FROM station),
(SELECT MAX(lat_n) FROM station),
(SELECT MAX(long_w) FROM station));
SELECT ROUND((c - a) + (d - b),4) FROM points;

Answer 15

select round(abs(max(lat_n )-min(lat_n)) + abs(max(long_w)-min(long_w)),4)
from station

Answer 16

I tried this one,
SELECT ROUND(MAX(LAT_N) - MIN(LAT_N) + MAX(LONG_W) - MIN(LONG_W), 4) FROM STATION

Answer 17

select cast((round((max(lat_n)-min(lat_n)),4)) as decimal (10,4))+ cast(round((max(long_w)-min(long_w)),4) as decimal(10,4)) from station;

Answer 18

select round( ABS(max(LAT_N)-min(LAT_N)) +
ABS(max(LONG_W)-min(LONG_W)),4 ) FROM STATION

Answer 19

-- a = min(lat_n); b = min(long_w) ; c= max(lat_n) ; d= max(long_w)
-- Manhattan Distance between points P1(a,b) and P2(c,d)= |c-a|+|d-b|
select round(abs(max(lat_n )-min(lat_n)) + abs(max(long_w)-min(long_w)),4)
from station

Answer 20

select cast(round(abs(Min(LAT_N) - Max(LAT_N)),4) + round(abs(Min(LONG_W) - Max(LONG_W)),4) as decimal(10,4)) from station;
try this query ,it worked for me

Answer 21

For MySQL:
select round((max(LAT_N) - min(LAT_N)) + (max(LONG_W) - min(LONG_W)),4) from station

Answer 22

Manhattan distance
Definition: The distance between two points measured along axes at right angles. In a plane with p1 at (x1, y1) and p2 at (x2, y2), it is |x1 - x2| + |y1 - y2|.
In the problem x1 is min(lat_n) and x2 is max(lat_n), similarly y1 will be min(long_w) and y2 will be max(long_w). Hence the query to perform this in MySQL is;
SELECT ROUND(ABS(MIN(LAT_N)-MAX(LAT_N)) + ABS(MIN(LONG_W)-MAX(LONG_W)),4) FROM STATION;

Answer 23

For MS SQL server logic
To find Manhattan distance between 2 points: P1(A,B) AND P2(C,D)
Formula : (C-A) + (D-B)
SELECT CAST(MAX(LAT_N) - MIN(LAT_N) + MAX(LONG_W) - MIN(LONG_W) AS DECIMAL(10,4))
FROM STATION
If you use the Round function, it will show you the wrong answer because the question asks for 4 decimal places only.