rollup 行轉列,列轉行

create table table_name(
 id int primary key,
 col1 char(2),
 col2 char(2),
 col3 int
);



insert into table_name values
(1 ,'A1','B1',9),
(2 ,'A2','B1',7),
(3 ,'A3','B1',4),
(4 ,'A4','B1',2),
(5 ,'A1','B2',2),
(6 ,'A2','B2',9),
(7 ,'A3','B2',8),
(8 ,'A4','B2',5),
(9 ,'A1','B3',1),
(10 ,'A2','B3',8),
(11 ,'A3','B3',8),
(12 ,'A4','B3',6),
(13 ,'A1','B4',8),
(14 ,'A2','B4',2),
(15 ,'A3','B4',6),
(16 ,'A4','B4',9),
(17 ,'A1','B4',3),
(18 ,'A2','B4',5),
(19 ,'A3','B4',2),
(20 ,'A4','B4',5);



CREATE TABLE rollup(
orderid int NOT NULL,
orderdate date NOT NULL,
empid int NOT NULL,
custid varchar(10) NOT NULL,
qty int NOT NULL,
PRIMARY KEY(orderid,orderdate));

INSERT INTO rollup SELECT 1,'2010-01-02',3,'A',10;
INSERT INTO rollup SELECT 2,'2010-04-02',2,'B',20;
INSERT INTO rollup SELECT 3,'2010-05-02',1,'A',30;
INSERT INTO rollup SELECT 4,'2010-07-02',3,'D',40;
INSERT INTO rollup SELECT 5,'2011-01-02',4,'A',20;
INSERT INTO rollup SELECT 6,'2011-01-02',3,'B',30;
INSERT INTO rollup SELECT 7,'2011-01-02',1,'C',40;
INSERT INTO rollup SELECT 8,'2009-01-02',2,'A',10;
INSERT INTO rollup SELECT 9,'2009-01-02',3,'B',20;


SELECT IFNULL(year,'合計') AS year,
       A.sum as sum,
			 IFNULL(A.custid ,'ALL') AS custid
 FROM 
(
SELECT YEAR(orderdate)  year,
       SUM(qty) sum ,custid
FROM rollup -- WHERE custid = 'A'
GROUP BY custid ,year WITH ROLLUP
)
A



-- SELECT * FROM 
-- (
-- 	SELECT IFNULL(class_id,'總計') as classid,SUM(stu_score) as score FROM student GROUP BY class_id  WITH ROLLUP
-- ) A
-- ORDER BY score


SELECT
	ifnull(col1, 'total') AS col1,
	sum(IF(col2 = 'B1', col3, 0)) AS B1,
	sum(IF(col2 = 'B2', col3, 0)) AS B2,
	sum(IF(col2 = 'B3', col3, 0)) AS B3,
	sum(IF(col2 = 'B4', col3, 0)) AS B4,
	SUM(col3) AS TOTAL
FROM
	table_name
GROUP BY
	col1 WITH ROLLUP;


SELECT
   IFNULL(col1,'total') AS total,
   SUM(IF(col2='B1',col3,0)) AS B1,
   SUM(IF(col2='B2',col3,0)) AS B2,
   SUM(IF(col2='B3',col3,0)) AS B3,
   SUM(IF(col2='B4',col3,0)) AS B4,
   SUM(IF(col2='total',col3,0)) AS total
 FROM (
   SELECT col1,IFNULL(col2,'total') AS col2,SUM(col3) AS col3
   FROM table_name
   GROUP BY col1,col2
   WITH ROLLUP
   HAVING col1 IS NOT NULL
 ) AS A
 GROUP BY col1
 WITH ROLLUP;