MySQL交叉表_MySQL

create table tx( 
 id int primary key, 
 c1 char(2), 
 c2 char(2), 
 c3 int 
);

insert into tx 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);

mysql> select * from tx;
+----+------+------+------+
| id | c1 | c2 | c3 
|+----+------+------+------+
| 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 |
+----+------+------+------+
20 rows in set (0.00 sec)
mysql>

+------+-----+-----+-----+-----+------+
|C1 |B1 |B2 |B3 |B4 |Total |
+------+-----+-----+-----+-----+------+
|A1 |9 |2 |1 |11 |23 |
|A2 |7 |9 |8 |7 |31 |
|A3 |4 |8 |8 |8 |28 |
|A4 |2 |5 |6 |14 |27 |
|Total |22 |24 |23 |40 |109 |
+------+-----+-----+-----+-----+------+

mysql> SELECT
 -> IFNULL(c1,'total') AS total,
 -> SUM(IF(c2='B1',c3,0)) AS B1,
 -> SUM(IF(c2='B2',c3,0)) AS B2,
 -> SUM(IF(c2='B3',c3,0)) AS B3,
 -> SUM(IF(c2='B4',c3,0)) AS B4,
 -> SUM(IF(c2='total',c3,0)) AS total
 -> FROM (
 -> SELECT c1,IFNULL(c2,'total') AS c2,SUM(c3) AS c3
 -> FROM tx
 -> GROUP BY c1,c2
 -> WITH ROLLUP
 -> HAVING c1 IS NOT NULL
 -> ) AS A
 -> GROUP BY c1
 -> WITH ROLLUP;
+-------+------+------+------+------+-------+
| total | B1 | B2 | B3 | B4 | total |
+-------+------+------+------+------+-------+
| A1 | 9 | 2 | 1 | 11 | 23 |
| A2 | 7 | 9 | 8 | 7 | 31 |
| A3 | 4 | 8 | 8 | 8 | 28 |
| A4 | 2 | 5 | 6 | 14 | 27 |
| total | 22 | 24 | 23 | 40 | 109 |
+-------+------+------+------+------+-------+
5 rows in set, 1 warning (0.00 sec)

mysql> select c1, 
-> sum(if(c2='B1',C3,0)) AS B1, 
-> sum(if(c2='B2',C3,0)) AS B2, 
-> sum(if(c2='B3',C3,0)) AS B3, 
-> sum(if(c2='B4',C3,0)) AS B4,SUM(C3) AS TOTAL 
-> from tx 
-> group by C1 
-> UNION 
-> SELECT 'TOTAL',sum(if(c2='B1',C3,0)) AS B1, 
-> sum(if(c2='B2',C3,0)) AS B2, 
-> sum(if(c2='B3',C3,0)) AS B3, 
-> sum(if(c2='B4',C3,0)) AS B4,SUM(C3) FROM TX 
-> ;
+-------+------+------+------+------+-------+
| c1 | B1 | B2 | B3 | B4 | TOTAL |
+-------+------+------+------+------+-------+
| A1 | 9 | 2 | 1 | 11 | 23 |
| A2 | 7 | 9 | 8 | 7 | 31 |
| A3 | 4 | 8 | 8 | 8 | 28 |
| A4 | 2 | 5 | 6 | 14 | 27 |
| TOTAL | 22 | 24 | 23 | 40 | 109 |
+-------+------+------+------+------+-------+
5 rows in set (0.00 sec)
mysql>

mysql> select ifnull(c1,'total'),
 -> sum(if(c2='B1',C3,0)) AS B1,
 -> sum(if(c2='B2',C3,0)) AS B2,
 -> sum(if(c2='B3',C3,0)) AS B3,
 -> sum(if(c2='B4',C3,0)) AS B4,SUM(C3) AS TOTAL
 -> from tx
 -> group by C1 with rollup ;
+--------------------+------+------+------+------+-------+
| ifnull(c1,'total') | B1 | B2 | B3 | B4 | TOTAL |
+--------------------+------+------+------+------+-------+
| A1 | 9 | 2 | 1 | 11 | 23 |
| A2 | 7 | 9 | 8 | 7 | 31 |
| A3 | 4 | 8 | 8 | 8 | 28 |
| A4 | 2 | 5 | 6 | 14 | 27 |
| total | 22 | 24 | 23 | 40 | 109 |
+--------------------+------+------+------+------+-------+
5 rows in set (0.00 sec)

mysql> SET @EE=''; mysql> SELECT @EE:=CONCAT(@EE,'SUM(IF(C2=/'',C2,'/'',',C3,0)) AS ',C2,',') 
FROM (SELECT DISTINCT C2 FROM TX) A;
 
mysql> SET @QQ=CONCAT('SELECT ifnull(c1,/'total/'),',LEFT(@EE,LENGTH(@EE)-1),' ,
SUM(C3) AS TOTAL FROM TX GROUP BY C1 WITH ROLLUP');Query OK, 0 rows affected (0.00 sec)
mysql> PREPARE stmt2 FROM @QQ;Query OK, 0 rows affected (0.00 sec)Statement prepared
mysql> EXECUTE stmt2;
+--------------------+------+------+------+------+-------+
| ifnull(c1,'total') | B1 | B2 | B3 | B4 | TOTAL |
+--------------------+------+------+------+------+-------+
| A1 | 9 | 2 | 1 | 11 | 23 |
| A2 | 7 | 9 | 8 | 7 | 31 |
| A3 | 4 | 8 | 8 | 8 | 28 |
| A4 | 2 | 5 | 6 | 14 | 27 |
| total | 22 | 24 | 23 | 40 | 109 |
+--------------------+------+------+------+------+-------+
5 rows in set (0.00 sec)
mysql>