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Identifiers limitations

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If an identifier contains a space or a special symbol, the identifier must be enclosed in back quotes. A valid name is a string of no more than 64 characters, of which the first character must not be a space. Valid names can't include control characters or the following special characters: `, |, #, *, ?, [, ], ., !, or $.

Don't use the reserved words listed in the SQL grammar in Appendix C of the ODBC Programmer's Reference (or the shorthand form of these reserved words) as identifiers (that is, table or column names), unless you surround the word in back quotes (`).