DBD::SQLite::st execute failed: column url is not unique(1) at dbdimp.c line 397 
[for Statement "INSERT INTO url (url, url_id) VALUES (?, ?)"

##</code><code>##

{
    dml => "insert",
    failure_reason => "unique",
    failure_details => "column url is not...",
    column => "url",
    value => "", #the value of url, from the code making the call
}