Select max int from varchar column

Question

I am trying to retrieve the largest number from a varchar column that includes both numbers and strings. An example of the data I\'m working with:

BoxNumber

Answer 1

SELECT MAX(CAST(value as signed)) FROM yourTable
WHERE VALUE NOT LIKE '%[a-z]%'
AND ISNUMERIC(VALUE) = 1

In MySql

You should use signed instead of int to cast correctly.

P.s types used to cast may differ in MySql

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