Use the tsequal system function to compare timestamps when you are using browse mode in a front-end application. For example, the following statement updates a row in publishers that has been browsed. It compares the timestamp column in the browsed version of the row with the hexadecimal timestamp in the stored version. If the two timestamps are not equal, you receive an error message, and the row is not updated.
update publishers set city = "Springfield" where pub_id = "0736" and tsequal(timestamp,0x0001000000002ea8)
Do not use the tsequal function in the where clause as a search argument. When you use tsequal, the rest of the where clause should match a single row uniquely. Use the tsequal function only in insert and update statements. If you use a timestamp column as a search clause, compare it like a regular varbinary column, that is, timestamp1 = timestamp2.
