SQL Server

XML Sort by Tag

See more XML Examples

Demonstrates the SortByTag method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSort1.xml, is this:

<root>
    <fruits>
        <apple>
            <fuji>blah</fuji>
            <gala>blah</gala>
            <grannySmith>blah</grannySmith>
            <honeycrisp>blah</honeycrisp>
            <mcIntosh>blah</mcIntosh>
        </apple>
        <banana>blah</banana>
        <blackberry>blah</blackberry>
        <blueberry>blah</blueberry>
        <orange>blah</orange>
        <pear>blah</pear>
    </fruits>
</root>

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

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

    DECLARE @xSortRoot int

    -- The sample input XML is available at http://www.chilkatsoft.com/data/fruitSort1.xml
    EXEC sp_OAMethod @xml, 'LoadXmlFile', @success OUT, 'fruitSort1.xml'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @xml, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xml
        RETURN
      END

    -- Sort the direct children under the "fruits" node by tag:
    EXEC sp_OAMethod @xml, 'FindChild', @xSortRoot OUT, 'fruits'

    -- Sort in ascending order.
    DECLARE @bAscending int
    SELECT @bAscending = 1
    EXEC sp_OAMethod @xSortRoot, 'SortByTag', NULL, @bAscending

    -- Show the result:
    EXEC sp_OAMethod @xml, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0

    -- <root>
    --     <fruits>
    --         <apple>
    --             <grannySmith>blah</grannySmith>
    --             <gala>blah</gala>
    --             <fuji>blah</fuji>
    --             <mcIntosh>blah</mcIntosh>
    --             <honeycrisp>blah</honeycrisp>
    --         </apple>
    --         <banana>blah</banana>
    --         <blackberry>blah</blackberry>
    --         <blueberry>blah</blueberry>
    --         <orange>blah</orange>
    --         <pear>blah</pear>
    --     </fruits>
    -- </root>

    -- Sort the direct children under the "apple" node:
    EXEC sp_OAMethod @xSortRoot, 'FindChild2', @success OUT, 'apple'

    EXEC sp_OAMethod @xSortRoot, 'SortByTag', NULL, @bAscending
    EXEC sp_OAMethod @xml, 'GetXml', @sTmp0 OUT
    PRINT @sTmp0

    -- <root>
    --     <fruits>
    --         <apple>
    --             <fuji>blah</fuji>
    --             <gala>blah</gala>
    --             <grannySmith>blah</grannySmith>
    --             <honeycrisp>blah</honeycrisp>
    --             <mcIntosh>blah</mcIntosh>
    --         </apple>
    --         <banana>blah</banana>
    --         <blackberry>blah</blackberry>
    --         <blueberry>blah</blueberry>
    --         <orange>blah</orange>
    --         <pear>blah</pear>
    --     </fruits>
    -- </root>

    EXEC @hr = sp_OADestroy @xSortRoot


    EXEC @hr = sp_OADestroy @xml


END
GO