delete from cmsPreviewXml where nodeId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from cmsContentVersion where contentId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from cmsDocument where nodeId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from cmsContentXML where nodeId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from cmsContent where nodeId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from cmsPropertyData where contentNodeId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from dbo.umbracoRelation where childId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from dbo.umbracoRelation where parentId in (select id from umbracoNode where path like '%-20%' and id!=-20)
delete from dbo.umbracoDomains where domainRootStructureID in (select id from umbracoNode where path like '%-20%' and id!=-20)
-- delete the XML nodes....
delete from umbracoNode where path like '%-20%' and id!=-20