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For XML to decimal datatype

  • May 29, 2010 at 5:32 pm

    #97377

    Hi,

    I'm trying to convert relational data to XML using For XML. I've managed to get the XML structure however columns stored as a float in the table are appearing as scientific in the XML. I have tried cast and convert but I can't get the output to 2 decimal places.

    If a value in column1 is 14.43.

    Select

    ISNULL(convert(float,[column1]),2) as [column1]

    for XML RAW('row'), elements, root('XMLData'), type

    gives 1.443000000000000e+001

    while

    Select

    ISNULL(convert(decimal,[column1]),2) as [column1]

    for XML RAW('row'), elements, root('XMLData'), type

    gives 14

  • May 29, 2010 at 7:30 pm

    #1174280

    floating point is exactly that. It's not a "precise" data type, meaning it won't truncate when you round a float.

    You're unsing the wrong data type if you wish exactly numbers of digits. Try Numeric instead.

    ----------------------------------------------------------------------------------
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  • May 30, 2010 at 2:52 am

    #1174309

    You need to add precision and scale when converting to DECIMAL. Otherwise it will use the default values (DECIMAL(18,0)) leading to integer values.

    Try

    SELECT

    ISNULL(CONVERT(DECIMAL(20,2),@val),2) AS [column1]

    FOR XML RAW('row'), elements, root('XMLData'), TYPE


    Lutz
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  • May 30, 2010 at 3:24 am

    #1174311

    Adding (20,2) worked.

    Thanks so much both 😀

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