Refers to an element that is distinctly different from any other element in a collection.
I have a dataframe which have three level of index, and I wish to calculate how much a value deviates …
python pandas unique pandas-groupby multi-indexSuppose I have category table and I have used soft delete on it. Now first time I have added one …
php laravel unique soft-deleteI have a couple of columns (ip, provider_id) for which I want combinations of values to always be unique. …
validation cakephp unique cakephp-2.0 customvalidatorI have an array with duplicate values in postgres. For example: SELECT cardinality(string_to_array('1,2,3,4,4', ',')::…
arrays postgresql unique postgresql-9.4I know this question has been asked earlier but i did not get relevant answer. I want to know that …
validation laravel-4 unique multiple-columnsI have a basic users table I want to create in MySQL. I do not want duplicate emails or duplicate …
mysql database-design unique create-table unique-constraintI'm writing a playbook to manage users on our servers defined in users.yml: --- users: - login: ab full_…
ansible unique user-managementI have an array like this: $a = array( 0 => array('type' => 'bar', 'image' => 'a.jpg'), 1 => array('type' =&…
php arrays foreach unique unique-valuesI'm not great with statistical mathematics, etc. I've been wondering, if I use the following: import uuid unique_str = str(…
math random unique uuid unique-key