Some of old PHP application use ANSI SQL to create table and insert data. So when I use those application with UTF8 content in MySQL 5.0, the default character-set of those table is latin1. The problems come when I want to move data to an older MySQL, the encoded content goes wrong.
So this is the solution:
mysqldump -u username –opt –default-character-set=latin1 –skip-set-charset –skip-tz-utc –skip-comments –single-transaction %1 %2 %3 %4 %5
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