I need a really good tutorial on how to alter MySQL databases, and to know how far you can alter a database without loosing or changing the information in the database. Thanx in advance for any help
jimdj
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Jump to PostFrom a philosophical point of view you cannot alter anything in a database without altering its information, because structure and data are what database information consists of. Even if you add only a column with no data or an enum value which is never used the semantics of the database …
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