TR_SETTING_AUDIT_UPDATE

CREATE TRIGGER [dbo].[TR_SETTING_AUDIT_UPDATE] ON [dbo].[SETTING] AFTER UPDATE NOT FOR REPLICATION
AS 

declare @ChangeAgentID uniqueidentifier
declare @AuditKey uniqueidentifier
declare @AuditDate datetime
declare @DateChanged datetime

set nocount on

set @DateChanged = null
set @ChangeAgentID = null

-- make sure the datestamp and changeagent fields are updated
if not update(CHANGEDBYID) 
    begin

        --Get a default changeagent id.  Applications should always explicitly included CHANGEDBYID in any updates to avoid a default change agent id.
        exec dbo.USP_CHANGEAGENT_GETORCREATECHANGEAGENTFROMCONTEXT @ChangeAgentID output

        IF not update(UPDATEDATE) 
            begin
                -- neither datechanged nor changedbyid were updated, so update both
                set @DateChanged = GetDate()
                update dbo.SETTING set CHANGEDBYID = @ChangeAgentID, UPDATEDATE = @DateChanged from dbo.SETTING inner join INSERTED on SETTING.ID = INSERTED.ID
            end
        else
            -- date changed was updated, but changedbyid wasn't so just update changedbyid
            update dbo.SETTING set CHANGEDBYID = @ChangeAgentID from dbo.SETTING inner join INSERTED on SETTING.ID = INSERTED.ID
    end

else if not update(UPDATEDATE) 
    begin
        set @DateChanged = GetDate()
        update dbo.SETTING set UPDATEDATE = @DateChanged from dbo.SETTING inner join INSERTED on SETTING.ID = INSERTED.ID
    end

--peform the audit
if dbo.UFN_AUDITENABLED('SETTING') = 1
    begin

        -- the audit key is used to associate the rows in the audit table with a single atomic deletion/modification
        -- we pre-fetch the audit date to make sure both rows contain exactly the same date value.

        set @AuditKey = NewID()
        set @AuditDate = GetDate()

        INSERT INTO dbo.SETTINGAUDIT(
            AUDITRECORDID, 
            AUDITKEY,
            AUDITCHANGEAGENTID,
            AUDITDATE, 
            AUDITTYPECODE,
            [NAME],
            [VALUE],
            [DATEADDED],
            [DATECHANGED],
            [ADDEDBYCMSUSERID],
            [CHANGEDBYCMSUSERID],
            [ADDEDBYID],
            [CHANGEDBYID]
        ) 
        SELECT 
            GUID,
            @AuditKey,
            COALESCE(@ChangeAgentID,(SELECT CHANGEDBYID FROM INSERTED WHERE INSERTED.ID=DELETED.ID)), --If explicitly updating CHANGEDBYID, use that, else use the the one default one fetched above
            @AuditDate,
            0, --Before Update
            [NAME],
            [VALUE],
            [CREATEDATE],
            [UPDATEDATE],
            [ADDEDBYCMSUSERID],
            [CHANGEDBYCMSUSERID],
            [ADDEDBYID],
            [CHANGEDBYID]

        FROM DELETED


        INSERT INTO dbo.SETTINGAUDIT(
            AUDITRECORDID, 
            AUDITKEY,
            AUDITCHANGEAGENTID,
            AUDITDATE, 
            AUDITTYPECODE,
            [NAME],
            [VALUE],
            [DATEADDED],
            [DATECHANGED],
            [ADDEDBYCMSUSERID],
            [CHANGEDBYCMSUSERID],
            [ADDEDBYID],
            [CHANGEDBYID]
        ) 
        SELECT 
            GUID,
            @AuditKey,
            COALESCE(@ChangeAgentID,CHANGEDBYID), --If explicitly updating CHANGEDBYID, use that, else use the the one default one fetched above
            @AuditDate,
            1, --After Update
            [NAME],
            [VALUE],
            [CREATEDATE],
            coalesce(@DateChanged, [UPDATEDATE]),
            [ADDEDBYCMSUSERID],
            [CHANGEDBYCMSUSERID],
            [ADDEDBYID],
            coalesce(@ChangeAgentID, [CHANGEDBYID])

        FROM INSERTED

    end