How to produce group subtotals for all combinations of the dimensions specified in Oracle?

OracleSoftware & CodingProgramming

Problem Statement:
You want to find out subtotals for all combinations of the dimensions specified in Oracle.

Solution:
The CUBE function will generate subtotals for all combinations of the dimensions specified. If “n” is the number of columns listed in the CUBE, there will be 2n subtotal combinations.

We will begin by create the necessary data for this requirement.

Example

-- Drop table DROP TABLE atp_titles; -- Create table CREATE TABLE atp_titles (   player             VARCHAR2(100) NOT NULL,   title_type         VARCHAR2(100) NOT NULL,   titles             NUMBER NOT NULL);

Example

-- insert  ATP tour titles won by the player
INSERT INTO atp_titles VALUES('Roger Federer','ATP Tour Titles',103);
INSERT INTO atp_titles VALUES('Rafael Nadal','ATP Tour Titles',86);
INSERT INTO atp_titles VALUES('Novak Djokovic','ATP Tour Titles',81);
INSERT INTO atp_titles VALUES('Pete Sampras','ATP Tour Titles',64);
INSERT INTO atp_titles VALUES('Andre Agassi','ATP Tour Titles',52);
INSERT INTO atp_titles VALUES('Andy Murray','ATP Tour Titles',46);
INSERT INTO atp_titles VALUES('Thomas Muster','ATP Tour Titles',39);
INSERT INTO atp_titles VALUES('Andy Roddick','ATP Tour Titles',32);

Example

-- insert  grandslam titles won by the player
INSERT INTO atp_titles VALUES('Roger Federer','Grandslams',20);
INSERT INTO atp_titles VALUES('Rafael Nadal','Grandslams',20);
INSERT INTO atp_titles VALUES('Novak Djokovic','Grandslams',17);
INSERT INTO atp_titles VALUES('Pete Sampras','Grandslams',14);
INSERT INTO atp_titles VALUES('Andre Agassi','Grandslams',8);
INSERT INTO atp_titles VALUES('Andy Murray','Grandslams',3);
INSERT INTO atp_titles VALUES('Thomas Muster','Grandslams',1);
INSERT INTO atp_titles VALUES('Andy Roddick','Grandslams',0);

COMMIT;

Now we will look at few records inserted into atp_titles table.

Example

SELECT * FROM atp_titles ORDER BY 1;

Output

Andre Agassi    ATP Tour Titles     52
Andre Agassi    Grandslams          8
Andy Murray Grandslams          3
Andy Murray ATP Tour Titles     46
Andy Roddick    ATP Tour Titles     32
Andy Roddick    Grandslams          0
............................
............................

Let us apply now CUBE function to the atp player - “Roger Federer”

SQL:

Example

SELECT player,title_type, SUM(titles) AS total_titles   FROM atp_titles  WHERE player = 'Roger Federer' GROUP BY CUBE (player,title_type) ORDER BY player,title_type  ;

Output

player
title_type
total_titles
Roger Federer
ATP Tour Titles
103
Roger Federer
Grandslams
20
Roger Federer
 
123
 
ATP Tour Titles
103
 
Grandslams
20
 
 
123

In addition to the subtotals generated by the ROLLUP extension, the CUBE extension had generated subtotals for all combinations of the player and title type specified.The output from the CUBE is highlighted in bold above.

Now we will apply the CUBE function for all the players in the table as below:

Example

SELECT player,title_type, SUM(titles) AS total_titles   FROM atp_titles GROUP BY CUBE (player,title_type) ORDER BY player,title_type 

player
title_type
total_titles
Andre Agassi
ATP Tour Titles
52
Andre Agassi
Grandslams
8
Andre Agassi
 
60
Andy Murray
ATP Tour Titles
46
Andy Murray
Grandslams
3
Andy Murray
 
49
Andy Roddick
ATP Tour Titles
32
Andy Roddick
Grandslams
0
Andy Roddick
 
32
Novak Djokovic
ATP Tour Titles
81
Novak Djokovic
Grandslams
17
Novak Djokovic
 
98
Pete Sampras
ATP Tour Titles
64
Pete Sampras
Grandslams
14
Pete Sampras
 
78
Rafael Nadal
ATP Tour Titles
86
Rafael Nadal
Grandslams
20
Rafael Nadal
 
106
Roger Federer
ATP Tour Titles
103
Roger Federer
Grandslams
20
Roger Federer
 
123
Thomas Muster
ATP Tour Titles
39
Thomas Muster
Grandslams
1
Thomas Muster
 
40
 
ATP Tour Titles
503
 
Grandslams
83
 
 
586
raja
Published on 04-Dec-2020 10:27:27
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