1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
| --------------
SET AUTOCOMMIT = 0
--------------
--------------
START TRANSACTION
--------------
--------------
DROP DATABASE IF EXISTS `base`
--------------
--------------
CREATE DATABASE `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
--------------
--------------
drop table if exists `test`
--------------
--------------
CREATE TABLE `test`
( `id` integer unsigned NOT NULL auto_increment primary key,
`a1` decimal(5, 2) NOT NULL,
`a2` decimal(5, 2) NOT NULL,
`b1` decimal(5, 2) NOT NULL,
`b2` decimal(5, 2) NOT NULL,
`a` decimal(5, 2),
`b` decimal(5, 2),
`c` decimal(5, 2)
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
insert into `test` (`a1`,`a2`,`b1`,`b2`,`a`,`b`,`c`) values
(25, 17, 39, 61, null, null, null),
(11, 22, 17, 33, null, null, null)
--------------
--------------
select * from `test`
--------------
+----+-------+-------+-------+-------+------+------+------+
| id | a1 | a2 | b1 | b2 | a | b | c |
+----+-------+-------+-------+-------+------+------+------+
| 1 | 25.00 | 17.00 | 39.00 | 61.00 | NULL | NULL | NULL |
| 2 | 11.00 | 22.00 | 17.00 | 33.00 | NULL | NULL | NULL |
+----+-------+-------+-------+-------+------+------+------+
--------------
update `test` set a = a1 + a2,
b = b1 + b2,
c = a / b
--------------
--------------
select * from `test`
--------------
+----+-------+-------+-------+-------+-------+--------+------+
| id | a1 | a2 | b1 | b2 | a | b | c |
+----+-------+-------+-------+-------+-------+--------+------+
| 1 | 25.00 | 17.00 | 39.00 | 61.00 | 42.00 | 100.00 | 0.42 |
| 2 | 11.00 | 22.00 | 17.00 | 33.00 | 33.00 | 50.00 | 0.66 |
+----+-------+-------+-------+-------+-------+--------+------+
--------------
COMMIT
--------------
--------------
SET AUTOCOMMIT = 1
--------------
Appuyez sur une touche pour continuer... |
Partager