> > I have some problmes with MySQL. We have some CHAR columns, which after > > CREATE or ALTER TABLE > > > > ALTER TABLE `traffic_stat` CHANGE `media_file_class_id` > > `media_file_class_id` CHAR(32) NOT NULL > > > > will be VARCHAR. Is this an MySQL bug? We are using MySQL 4.0.18. > > http://www.mysql.com/doc/en/Silent_column_changes.html > > will answer your question: if there are any variable columns in a table, > MySQL sees no virtue in fixed size CHAR columns and silently changes CHAR > to VARCHAR.
As against the SQL standard, because CHAR and VARCHAR are conceptually different.
yes. our CHAR columns has allways the same length.
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