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    <p>For a moment, forget your issue with what must be an attempt to insert into a linked server (though it is not obvious from your code that <code>Customers</code> must either be a synonym or you dumbed the statement down).</p> <p>Ask yourself: why would you use random numbers for uniqueness? Random and unique may seem like similar concepts, but they're not. </p> <p>I also see a lack of error handling (again, this may just be that you dumbed down your code to "help" us). Eventually you will get duplicates. You may want to read <a href="http://www.mssqltips.com/sqlservertip/3055/generating-random-numbers-in-sql-server-without-collisions/" rel="nofollow">this tip</a> and <a href="http://www.sqlperformance.com/2013/09/t-sql-queries/random-collisions" rel="nofollow">this blog post</a>. Essentially, as you insert more and more "unique" values, the likelihood that you will get a collision increases. So rather than solve the issue with your solution, I think you should step back and re-consider the problem.</p> <p>Why are you using random numbers instead of simpler concepts that - at least by default - help assure uniqueness in a much more predictable way, like <code>IDENTITY</code> or <code>SEQUENCE</code>? Is it to prevent people from guessing the next value, or being able to determine how many values you generate in a time period? If so, then pre-populate a table with a bunch of random values, and pull one off the stack when you need one, <a href="http://www.sqlperformance.com/2013/09/t-sql-queries/random-collisions" rel="nofollow">as I described here</a>. If this isn't the crucial issue, then stop breaking your back and just use an existing methodology for generating unique - and not random - numbers.</p>
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    1. POIs INT the correct datatype for ABS(CHECKSUM(NEWID()))?
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    1. USAaron Bertrand
    1. USAaron Bertrand
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    1. POIs INT the correct datatype for ABS(CHECKSUM(NEWID()))?
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    1. COI inherited a codebase that had something like `var tempGuid = random.Next(10000, 1000000)` sprinkled throughout it. There went my weekend. So yes, please stick to unique numbers for unique identifiers.
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    2. COThanks @AaronBertrand...There is something fundamentally wrong with what i'm doing and it just don't make sense. Question: If I use IDENTITY or SEQUENCE, then ABS(CHECKSUM(cust_id)) should work...cust_id is a IDENTITY column already.
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    3. CO@Chad I am failing to comprehend what you are using ABS(CHECKSUM()) for.
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