(SQL Server) XML Accumulate Tag Content

Demonstrates how to use the AccumulateTagContent method of the XML class.

Imagine the XML document for this test contains the following:

<?xml version="1.0" encoding="utf-8"?>
<abc>
	<zzz>The quick brown fox</zzz>
	<xyz>
	    <zzz>hello world!</zzz>
	</xyz>
	<mmm>
	    <zzz>jumped over the lazy dog.</zzz>
	</mmm>
</abc>

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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @xml int
    -- Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Xml', @xml OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @xml, 'LoadXmlFile', @success OUT, 'my_document.xml'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @xml, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xml
        RETURN
      END

    -- Accumulate the textual content within the "zzz" nodes of this
    -- XML.  Skip sub-trees rooted at nodes having the tag "xyz".
    -- For the given test XML, the resulting accumulated text should be:
    -- "The quick brown fox jumped over the lazy dog."
    EXEC sp_OAMethod @xml, 'AccumulateTagContent', @sTmp0 OUT, 'zzz', 'xyz'
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @xml


END
GO