SQL206 SQL Median

Median SQL Programming Median query – How to calculate the median Parts Median

Notes on Median Slides ,[object Object],[object Object],[object Object],[object Object],Parts Median

Median Resources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Parts Median

Assumptions ,[object Object],[object Object],Parts Median

Business Case ,[object Object],[object Object],[object Object],[object Object],[object Object],Parts Median

Approach ,[object Object],[object Object],[object Object],[object Object],Parts Median

Create Table ,[object Object],Parts Median CREATE TABLE Parts (part_nbr VARCHAR(5) NOT NULL PRIMARY KEY , part_name VARCHAR(50) NOT NULL , part_color VARCHAR(50) NOT NULL , part_wgt INTEGER NOT NULL , city_name VARCHAR(50) NOT NULL );

Load Data ,[object Object],Parts Median INSERT INTO Parts (part_nbr, part_name, part_color, part_wgt, city_name) VALUES ('p1', 'Nut', 'Red', 12, 'London') , ('p2', 'Bolt', 'Green', 17, 'Paris') , ('p3', 'Cam', 'Blue', 12, 'Paris') , ('p4', 'Screw', 'Red', 14, 'London') , ('p5', 'Cam', 'Blue', 12, 'Paris') , ('p6', 'Cog', 'Red', 19, 'London') ;

Calculate the median ,[object Object],Parts Median select avg(wgt) as median from (select max(part_wgt) as wgt From (select top 50 percent * from parts order by part_wgt asc) a union select min(part_wgt) from (select top 50 percent * from parts order by part_wgt desc) d) u;

Explanation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Parts Median

SQL206 SQL Median

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Andere mochten auch

Andere mochten auch (14)

Ähnlich wie SQL206 SQL Median

Ähnlich wie SQL206 SQL Median (20)

Mehr von Dan D'Urso

Mehr von Dan D'Urso (20)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

SQL206 SQL Median