>      SELECT avg(length(domain)) from domains;
>
>   The response is 10 and not 4.

>From <http://www.sqlite.org/lang_expr.html>:

  length(X)  Return the string length of X in characters.
             If SQLite is configured to support UTF-8, then
             the number of UTF-8 characters is returned,
             not the number of bytes.

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