(SQL Server) Compute CRC32 of a File

Calculates the CRC32 of a file's contents and returns the 32-bit CRC as a hex string.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @zipCrc int
    -- Use "Chilkat_9_5_0.ZipCrc" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.ZipCrc', @zipCrc OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Use a relative for absolute path to the file..
    DECLARE @crc int
    EXEC sp_OAMethod @zipCrc, 'FileCrc', @crc OUT, 'qa_data/hamlet.xml'
    DECLARE @hexStr nvarchar(4000)
    EXEC sp_OAMethod @zipCrc, 'ToHex', @hexStr OUT, @crc

    PRINT @hexStr

    EXEC @hr = sp_OADestroy @zipCrc


END
GO