-- 1) Setup Variables /* DECLARE @current_mandator_id UNIQUEIDENTIFIER SET @current_mandator_id = 'BFA70F6B-484C-49DA-9AD7-1CCD8F0D684C' */ -- 2) Get the FK CREATE TABLE #OUStructure ( orgId UNIQUEIDENTIFIER, parentId UNIQUEIDENTIFIER, orgUnitPath NVARCHAR(MAX), hasManager INT ) CREATE TABLE #OUManagers ( orgId UNIQUEIDENTIFIER, user_id INT ) -- 1 Building up the structure for the OUs ;WITH Structure(id,parent_id,orgUnitPath,hasManager) AS ( SELECT id, parent_id, orgUnitPath, CASE WHEN EXISTS(SELECT * FROM tblUsersOrganisationUnits WHERE organisationUnit_id = tblOrganisationUnits.id AND position = 1) THEN 1 ELSE 0 END FROM tblOrganisationUnits WHERE mandator_id = @current_mandator_id AND deleted IS NULL AND parent_id IS NULL UNION ALL SELECT tblOrganisationUnits.id, tblOrganisationUnits.parent_id, tblOrganisationUnits.orgUnitPath, CASE WHEN EXISTS(SELECT * FROM tblUsersOrganisationUnits WHERE organisationUnit_id = tblOrganisationUnits.id AND position = 1) THEN 1 ELSE 0 END FROM tblOrganisationUnits INNER JOIN Structure ON tblOrganisationUnits.parent_id = Structure.id WHERE tblOrganisationUnits.deleted IS NULL ) INSERT INTO #OUStructure SELECT * FROM Structure -- 2 checking for already available OU Managers INSERT INTO #OUManagers SELECT tblUsersOrganisationUnits.organisationUnit_id, tblUsersOrganisationUnits.user_id FROM #OUStructure INNER JOIN tblUsersOrganisationUnits ON tblUsersOrganisationUnits.organisationUnit_id = #OUStructure.orgId WHERE tblUsersOrganisationUnits.position = 1 AND #OUStructure.hasManager = 1 -- 3 detect missing OU Managers and get those from the parent structure -- excluding root node ;WITH UpdateTable(orgId, user_id) AS (SELECT #OUStructure.orgId, #OUManagers.user_id FROM #OUStructure CROSS APPLY( SELECT TOP 1 A.orgId FROM #OUStructure AS A WHERE #OUStructure.orgUnitPath LIKE A.orgUnitPath + '%' AND A.hasManager = 1 ORDER BY LEN(A.orgUnitPath) DESC ) AS innerQuery INNER JOIN #OUManagers ON #OUManagers.orgId = innerQuery.orgId WHERE hasManager = 0 AND parentId IS NOT NULL ) INSERT INTO #OUManagers SELECT * FROM UpdateTable -- The Result SELECT DISTINCT descUserCn, Vorname, Nachname, ISNULL(STUFF(( SELECT '|' + codekey + '#1' FROM #OUManagers oum2 INNER JOIN tblOrganisationUnits ou ON ou.id = oum2.orgId WHERE oum2.user_id = oum.user_id FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 1, ''), '') AS "organisationUnitPositions" FROM #OUManagers oum INNER JOIN v_Users vu ON vu.intUserCn = oum.user_id -- Cleanup DROP TABLE #OUStructure DROP TABLE #OUManagers