Popular "unique" questions | Page 13

Profiling my cpu-bound code has suggested I that spend a long time checking to see if a container contains completely …

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$arr[] = array('A','B'); $arr[] = array('C','B'); ... I need to get the merged result of all sub array of $…

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I have a simple MySQL table with one column: name. I would like to define a unique constraint on this …

mysql ruby-on-rails ruby-on-rails-3 unique unique-constraint

I have not found any answer regarding my question, all unique constraint questions did not involve MS Access. The question …

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How do I generate a unique ID value that can be easily passed on via phone or email, that can …

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i've configured wamp in my system, and am doing the development cum testing in this local environment. i was working …

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Let's take a simple "Account Registration" example, here is the flow: User visit website Click "Register" button and fill form, …

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I noticed that I can have NULL values in columns that have the UNIQUE constraint: UNIQUE(col) Would that generate …

sql sqlite null unique unique-constraint

neo4j unique unique-constraint

After using sites like JSFiddle I noticed that they auto generate a random and unique URL made up of various …

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