Do underscores in table names effect performance or cause issues on some platforms?

e.g. user_profiles

would it be better to use userProfiles or is it just a matter of personal preference?

Accepted Answer

Nope. Underscores are perfectly legal in table names.

This page here in the MySQL documentation tells you about what characters are allowed.


Permitted characters in unquoted identifiers:

ASCII: [0-9,a-z,A-Z$_]
Extended: U+0080 .. U+FFFF

Permitted characters in quoted identifiers:

ASCII: U+0001 .. U+007F
Extended: U+0080 .. U+FFFF

Personally I tend to stick with lowercase a-z, the occasional number, and underscores. But as @Vince said, it's just personal preference.

Written by Ben
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