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Power Platform Community / Forums / Power Apps / Loss of precision with...
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Loss of precision with SQL Server BigInt data type

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Posted on by 37,283 Super User 2026 Season 2

One thing I discovered is that if I attempt to save the value 9007199254740988 to a SQL Server BigInt field, the actual value that my app saves to the database is 9007199254740990.

 

This loss of precision surprised me. Although I'd expect floating point numbers to behave in this way, I thought that an integer data type should allow me to save and retrieve exact values.

 

Can someone confirm if this is a bug or expected behaviour?

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  • Verified answer
    AndyPennell Profile Picture
    Microsoft Employee on at

    This is expected behavior. PA uses Javascript under the hood, and has the same limitations for numeric accuracy.

  • timl Profile Picture
    37,283 Super User 2026 Season 2 on at

    Hi @AndyPennell 

     

    Thanks for clarifying that. 

     

    Tim

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