将nvarchar转换为int时出错

Question

SELECT 
    New_accountid AS AccountId
FROM 
    BingMapsPlatform_MSCRM.dbo.FilteredAccount WITH (NOLOCK)
WHERE 
    new_islicensed = 1
    AND new_accountid NOT IN (SELECT DISTINCT CONVERT(INT,New_AccountId)
                              FROM BingMapsPlatform_MSCRM.dbo.New_keydenylistExtensionBase WITH (NOLOCK)
                              WHERE New_AccountId IS NOT NULL)

I am getting this error from this script. Please help me .

ErrorMessage : State 1, Line 1
Conversion failed when converting the nvarchar value 'account 1' to data type int.

Answer 1

Is the Id an int?, could be a guid or sequential guid. If not then divide the table in half, and re run, etc until you determin the row which generates the error (i'd try with just one row to check for sillys first). Oh and copy the table contents to a backup first (but you knew that)

Answer 2

This line is causing the error:

CONVERT(INT,New_AccountId)

Make a usual select on the table using the filter: where accountId = 'account 1' , change this value and try again.

Consider using the ISNUMERIC(input) function to determine if its nummeric before converting and if its not then use 0 or -1 as a default value (Take a look at this answer for an example).