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Developer-C 11.1
3.0
4.0
10.2
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10.4
10.5
10.6
10.7
10.8
10.9
10.11
11.4
5.5
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8.0
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18
11g Release 2
18c
21c
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8.4
9.3
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9.5
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10
11
12
13
14
15
16
17
2012
2014
2016
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2017 (Linux)
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2019 (Linux)
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3.8
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3.27
3.39
2.11
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2.6
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2.18
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AdventureWorks
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CREATE TABLE name_val (`name` varchar(4), `value` int) ; INSERT INTO name_val (`name`, `value`) VALUES ('rami', 2), ('rami', 3), ('rami', 4), ('sam', 5), ('sam', 6) ;
SET @sql = NULL; SET @sql2 = NULL; SELECT GROUP_CONCAT(DISTINCT CONCAT('GROUP_CONCAT(IF(s.`name` = "', `name`,'", `value`,"")) AS ',name) ) INTO @sql FROM name_val; SELECT GROUP_CONCAT(DISTINCT CONCAT('MAX(', `name`,') AS ',name) ) INTO @sql2 FROM name_val; SET @sql = CONCAT('SELECT ',@sql2,' FROM (SELECT ', @sql, ' FROM name_val s GROUP BY s.`name` ORDER BY s.`name`) t1'); PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
rami
sam
2,3,4
5,6