Hi Charles,
to get max . # characters:
SELECT MAX(CHAR_LENGTH(<fieldname>)) AS `MaxChars`;
to get max. # bytes:
SELECT MAX(LENGTH(<fieldname>)) AS `MaxBytes`;
HTH, Cor
----- Original Message -----
From: "Charles Lambach" <[EMAIL PROTECTED]>
To: <mysql@lists.mysql.com>
Sent: Tuesday, April 29, 2008 1:21 PM
Subject: How to know the maximum length of a field
Hi.
I've got a table with some fields, which I created with VARCHAR(100).
I want to optimize this table, and I want to modify the length of these
fields from VARCHAR(100) to VARCHAR(maximum_length), where
"maximum_length"
is the length of the record with the longest field.
I could create a Perl script to do it, but I wonder if there's a mySQL
command which does it automatically.
Thank you very much,
--Charles
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