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Asked: 2026-05-13T01:11:22+00:00

I have a table that looks like this: id datatype name value 0 nvarchar(255)

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I have a table that looks like this:

id    datatype        name    value
0     nvarchar(255)   myName  'Paul'
1     int             age     '30'
2     float(53)       Custom1  0.5
3     float(53)       Custom2  1.3
4     float(53)       Custom3  2.7

I am wondering if it is possible to do something like the following where I cast the order by as a float – I know this is incorrect syntax but wondering if this can be done.

SELECT datatype, name, value FROM myTable
ORDER BY (float)name

Thanks in advance.

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1 Answer

  1. Editorial Team

    To convert datatypes in SQL you can use CAST or CONVERT:

    SELECT CAST('123' AS FLOAT), CONVERT(FLOAT, '123')

    But if your name field contains a value that cannot be converted to a valid float, you’ll get an error.

    e.g. 

    SELECT CAST('NotAValidFloat' AS FLOAT)

    will give you:

    Msg 8114, Level 16, State 5, Line 1
Error converting data type varchar to float.
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