hi expert, i have a probelm , i have table purcahseline which have column as <table border="0" cellspacing="2" cellpadding="2" width="500"><tbody><tr><td> PoId</td><td> Qty </td><td> company </td><td> Itemid</td><td> ItemName</td></tr></tbody></table> having multipel records, now when i used update query on this table, suppose it have old record<table border="0" cellspacing="2" cellpadding="2" width="500"><tbody><tr><td> PoId</td><td> Qty</td><td> Company</td><td> itemId</td><td> Qty</td></tr><tr><td> 01</td><td> 20</td><td> aa</td><td> ac-00002</td><td> Potato</td></tr></tbody></table><div><table border="0" cellspacing="2" cellpadding="2" width="500"><tbody><tr><td><br /></td><td><br /></td><td><br /></td><td><br /></td><td><br /></td></tr></tbody></table></div><div>when i update the record (qty) from 20 to 10 then there add a new field in same table which show me difference between old value and updated value.</div><div> </div>