> I'm using MySQL Linux version 4.1.21 standard.
> I have a table with fields of a variety of types, including varchar(255)
> text (which might matter). When I do
> SELECT MAX(LENGTH(x)) FROM tx;
> where x is a varchar(255), I get back 266 as the result of the query!
> This isn't listed as one of the silent conversions - varchar(256) would be
> converted to text, but not varchar(255). What's going on?
Well, LENGTH returns the length in bytes, not characters. If you use
characterset in your table/column that uses a multi-byte-per-character
encoding scheme, LENGTH can return more than the number of
See also CHAR_LENGTH here:
Database Workbench - development tool for MySQL, and more!
Database development questions? Check the forum!