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Developer-C 11.1
3.0
4.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
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18
11g Release 2
18c
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8.4
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10
11
12
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14
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3.8
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3.27
3.39
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AdventureWorks
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CREATE TABLE nextg (`col` varchar(9)) ; INSERT INTO nextg (`col`) VALUES ('---------'), ('ALL'), ('USD'), ('USD'), ('RET'), ('RET'), ('ACC'), ('ACC'), ('ALL'), ('ALL'), ('ERR'), ('ERR'), ('PRO'), ('PRO'), ('1'), ('1'), ('2'), ('2'), ('3'), ('3'), ('4'), ('4'), ('5'), ('5'), ('6'), ('6'), ('7'), ('7'), ('8'), ('8'), ('9'), ('10'), ('AY'), ('AY'), ('C'), ('C'), ('CF') ;
Records: 37 Duplicates: 0 Warnings: 0
SELECT MAX(CAST(col AS SIGNED)) from nextg WHERE col REGEXP '^[0-9]+$';;
MAX(CAST(col AS SIGNED))
10