Using Microsoft SQL Server to Capture Text/Image Columns

If you want to audit text or image columns with Microsoft SQL Server, you will have to alter the trigger scripts that are generated manually. The trigger scripts that generated through the online pages do not support text or image columns. Below is an example of how a join against the base table can capture the value of the COMMENTS field after an insert, or update is performed.

CREATE TRIGGER PS_ABSENCE_HIST_TR ON PS_ABSENCE_HIST
FOR DELETE , INSERT , UPDATE
AS
SET NOCOUNT ON
DECLARE @XTYPE CHAR(1), @OPRID CHAR(8)
SET @OPRID = NULL

[SELECT @OPRID = substring(cast(context_info as char(128)),1,
(charindex(',',cast(context_info as char(128)))-1))
          FROM master..sysprocesses
          WHERE spid = @@spid]

IF EXISTS (SELECT * FROM DELETED)
BEGIN
SET @XTYPE = 'D'
END
IF EXISTS (SELECT * FROM INSERTED)
BEGIN
IF (@XTYPE = 'D')
 BEGIN
  SET @XTYPE = 'U'
 END
ELSE
 BEGIN
  SET @XTYPE = 'I'
 END
END
-- Transaction is a Delete
IF (@XTYPE = 'D')
BEGIN
INSERT INTO PS_AUDIT_ABSENCE 
(AUDIT_OPRID,AUDIT_STAMP,AUDIT_ACTN,
EMPLID,ABSENCE_TYPE,BEGIN_DT,RETURN_DT,DURATION_DAYS,
DURATION_HOURS,REASON,PAID_UNPAID,EMPLOYER_APPROVED,COMMENTS)
SELECT @OPRID,getdate(),'D',
A.EMPLID,A.ABSENCE_TYPE,A.BEGIN_DT,A.RETURN_DT,A.DURATION_DAYS,
A.DURATION_HOURS,A.REASON,A.PAID_UNPAID,A.EMPLOYER_APPROVED,'' 
FROM deleted A 
END
-- Transaction is a Insert
IF (@XTYPE = 'I')
BEGIN
INSERT INTO PS_AUDIT_ABSENCE
(AUDIT_OPRID,AUDIT_STAMP,AUDIT_ACTN,
EMPLID,ABSENCE_TYPE,BEGIN_DT,RETURN_DT,DURATION_DAYS,
DURATION_HOURS,REASON,PAID_UNPAID,EMPLOYER_APPROVED,COMMENTS)
SELECT @OPRID,getdate(),'A',
A.EMPLID,A.ABSENCE_TYPE,A.BEGIN_DT,A.RETURN_DT,A.DURATION_DAYS,
A.DURATION_HOURS,A.REASON,A.PAID_UNPAID,A.EMPLOYER_APPROVED,B.COMMENTS 
FROM inserted A, PS_ABSENCE_HIST BWHERE A.EMPLID = B.EMPLID  AND A.ABSENCE_TYPE = B.ABSENCE_TYPE  AND A.BEGIN_DT = B.BEGIN_DT
END
-- Transaction is a Update
IF (@XTYPE = 'U')
BEGIN
-- Before Update
INSERT INTO PS_AUDIT_ABSENCE
(AUDIT_OPRID,AUDIT_STAMP,AUDIT_ACTN,
EMPLID,ABSENCE_TYPE,BEGIN_DT,RETURN_DT,DURATION_DAYS,
DURATION_HOURS,REASON,PAID_UNPAID,EMPLOYER_APPROVED,COMMENTS)
SELECT @OPRID,getdate(),'K',
A.EMPLID,A.ABSENCE_TYPE,A.BEGIN_DT,A.RETURN_DT,A.DURATION_DAYS,
A.DURATION_HOURS,A.REASON,A.PAID_UNPAID,A.EMPLOYER_APPROVED,'' 
FROM deleted A 
-- After Update
INSERT INTO PS_AUDIT_ABSENCE 
(AUDIT_OPRID,AUDIT_STAMP,AUDIT_ACTN,
EMPLID,ABSENCE_TYPE,BEGIN_DT,RETURN_DT,DURATION_DAYS,
DURATION_HOURS,REASON,PAID_UNPAID,EMPLOYER_APPROVED,COMMENTS)
SELECT @OPRID,getdate(),'N',
A.EMPLID,A.ABSENCE_TYPE,A.BEGIN_DT,A.RETURN_DT,A.DURATION_DAYS,
A.DURATION_HOURS,A.REASON,A.PAID_UNPAID,A.EMPLOYER_APPROVED,B.COMMENTS 
FROM inserted A, PS_ABSENCE_HIST BWHERE A.EMPLID = B.EMPLID  AND A.ABSENCE_TYPE = B.ABSENCE_TYPE  AND A.BEGIN_DT = B.BEGIN_DT
END