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 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101
| --------------
START TRANSACTION
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--------------
set session collation_connection = "latin1_general_ci"
--------------
--------------
DROP DATABASE IF EXISTS `base`
--------------
--------------
CREATE DATABASE IF NOT EXISTS `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
--------------
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DROP TABLE IF EXISTS `test`
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CREATE TABLE `test`
( `id` integer unsigned NOT NULL auto_increment primary key,
`val` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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INSERT INTO `test` (`val`) VALUES
('un'),('deux'),('un'),('trois'),('un'),('deux'),('deux'),('un'),('quatre')
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--------------
select *
from `test`
order by `val`
--------------
+----+--------+
| id | val |
+----+--------+
| 2 | deux |
| 6 | deux |
| 7 | deux |
| 9 | quatre |
| 4 | trois |
| 1 | un |
| 3 | un |
| 5 | un |
| 8 | un |
+----+--------+
--------------
select @rang:=IF(t1.`val`=@prec,@rang+1,1) as rang,
@prec:=t1.`val` as val
from `test` as t1
inner join (SELECT @rang:=0,@prec:=0) as t2
order by val
--------------
+------+--------+
| rang | val |
+------+--------+
| 1 | deux |
| 2 | deux |
| 3 | deux |
| 1 | quatre |
| 1 | trois |
| 1 | un |
| 2 | un |
| 3 | un |
| 4 | un |
+------+--------+
--------------
select row_number() over (partition by `val`) as numero,
`val`
from `test`
order by `val`
--------------
+--------+--------+
| numero | val |
+--------+--------+
| 1 | deux |
| 2 | deux |
| 3 | deux |
| 1 | quatre |
| 1 | trois |
| 1 | un |
| 2 | un |
| 3 | un |
| 4 | un |
+--------+--------+
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COMMIT
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