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According to the manual (http://dev.mysql.com/doc/refman/5.5/en/reserved-words.html#table-reserved-words-new-5.5):
MySQL permits some keywords to be used as unquoted identifiers because many people previously used them. Examples are those in the following list:
- ACTION
- BIT
- DATE
- ENUM
- NO
- TEXT
- TIME
- TIMESTAMP
So you are allowed to use date as a column name, but it doesn't say that it is not recommended.
What are implications to using date as a column name?