SQL Server

Gzip a File

See more Gzip Examples

Demonstrates how to create a .gz (gzipped file). SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    DECLARE @gzip int
    EXEC @hr = sp_OACreate 'Chilkat.Gzip', @gzip OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- This will create a .gz such that when ungzipped by a tool such as 7-Zip,
    -- it will create "qa_data/hamlet.xml".
    EXEC sp_OAMethod @gzip, 'CompressFile', @success OUT, 'qa_data/hamlet.xml', 'qa_output/hamlet.xml.gz'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @gzip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @gzip
        RETURN
      END

    -- Call CompressFile2 to explicitly specify the ungzip path
    -- For example, this will create a .gz such that when ungzipped by a tool such as 7-Zip,
    -- it will create "hamlet.xml".
    DECLARE @embeddedExtractPath nvarchar(4000)
    SELECT @embeddedExtractPath = 'hamlet.xml'
    EXEC sp_OAMethod @gzip, 'CompressFile2', @success OUT, 'qa_data/hamlet.xml', @embeddedExtractPath, 'qa_output/hamlet2.xml.gz'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @gzip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @gzip
        RETURN
      END


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @gzip


END
GO