Shortest Distance in a PlaneTable point_2d holds the coordinates (x,y) of some unique points (more than two) in a plane.Write a query to find the shortest distance between these points rounded to 2 decimals.xy-1-100-1-2The shortest distance is 1.00 from point (-1,-1) to (-1,2). So the output should be:shortest1.00Note: The longest distance among all the points are less than 10000.Optionsselect round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) as dist from point_2d as a, point_2d as b) as d;select round(dist) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist) as d;
Question
Shortest Distance in a PlaneTable point_2d holds the coordinates (x,y) of some unique points (more than two) in a plane.Write a query to find the shortest distance between these points rounded to 2 decimals.xy-1-100-1-2The shortest distance is 1.00 from point (-1,-1) to (-1,2). So the output should be:shortest1.00Note: The longest distance among all the points are less than 10000.Optionsselect round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) as dist from point_2d as a, point_2d as b) as d;select round(dist) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist) as d;
Solution
The correct option is:
select round(min(dist), 2) as shortest
from (
select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist
from point_2d as a, point_2d as b
) as d;
This SQL query works by comparing every point in the table with every other point. For each pair of points, it calculates the Euclidean distance between them (using the formula sqrt((x2-x1)^2 + (y2-y1)^2)). If the points are the same (i.e., their x and y coordinates are both equal), it assigns them a distance of 10000 (since the question specifies that the longest distance is less than 10000). Finally, it selects the smallest of these distances and rounds it to 2 decimal places.
Similar Questions
Table point_2d holds the coordinates (x,y) of some unique points (more than two) in a plane.Write a query to find the shortest distance between these points rounded to 2 decimals.xy-1-100-1-2The shortest distance is 1.00 from point (-1,-1) to (-1,2). So the output should be:shortest1.00Note: The longest distance among all the points are less than 10000.Optionsselect round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) as dist from point_2d as a, point_2d as b) as d;select round(dist) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist) as d;select round(min(dist), 2) as shortestfrom ( select if(a.x = b.x and a.y = b.y, 10000, sqrt(power(a.x - b.x, 2) + power(a.y - b.y, 2))) as dist from point_2d as a, point_2d as b) as d;
Shortest Distance in a LineTable point holds the x coordinate of some points on x-axis in a plane, whichare all integers.Write a query to find the shortest distance between two points in these points.x-102The shortest distance is '1' obviously, which is from point '-1' to '0'. So theoutput is as below:shortest1Note: Every point is unique, which means there is no duplicates in table point.Optionsselect min(abs(a.x - b.x)) as shortestfrom point as a, point as bwhere a.x == b.x;select min(abs(a.x - b.x)) as shortestfrom point as a, point as bwhere a.x != b.x;select min(abs(b.x - a.x)) as shortestfrom point as a, point as bwhere a.x != b.x;select min(abs(b.x - a.x)) as shortestfrom point as b, point as bwhere a.x == b.x;
Consider and to be two points on a 2D plane. happens to equal the minimum value in Northern Latitude (LAT_N in STATION). happens to equal the minimum value in Western Longitude (LONG_W in STATION). happens to equal the maximum value in Northern Latitude (LAT_N in STATION). happens to equal the maximum value in Western Longitude (LONG_W in STATION).Query the Manhattan Distance between points and and round it to a scale of decimal places.Input FormatThe STATION table is described as follows:
Find the distance between each pair of points (-9, -1) and (2, 4). Round to the nearest tenth.
Find the distance between the points (8,10) and (1,1).Round decimals to the nearest tenth. unitsSubmit
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.