To watch SQL column which has been changed recentely

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I need to watch sql columns in table, which has been recently changed with out using last modified date

Could you help me to sql query for latest changes.

original table:

S.No Employee id       First Name   Last Name   Address 1
1    00007          J           Siva        East st
2    020007         G           Moorthy         West street
3    300007         gan         thanu           East st
4    100007             esh         Moor            West street

modified table

S.No Employee id       First Name   Last Name   Address 1
1    00007          Jun        Siva      East st
2    020007         Gon    Moorthy   West street
3    300007         gan         thanu           East st
4    100007             esh         Moor            West street

so i need to fetch only below 2 rows.

S.No Employee id       First Name   Last Name   Address 1
1    00007          Jun        Siva      East st
2    020007         Gon    Moorthy   West street

What I have tried:

original table:

<pre>	S.No Employee id       First Name	Last Name	Address 1
	1    00007	        J	        Siva    	East st
	2    020007     	G	        Moorthy	        West street
	3    300007	        gan	        thanu	        East st
	4    100007 	        esh	        Moor	        West street

modified table

S.No Employee id       First Name   Last Name   Address 1
1    00007          Jun        Siva      East st
2    020007         Gon    Moorthy   West street
3    300007         gan         thanu           East st
4    100007             esh         Moor            West street

so i need to fetch only below 2 rows.

S.No Employee id       First Name   Last Name   Address 1
1    00007          Jun        Siva      East st
2    020007         Gon    Moorthy   West street

Posted 17-Apr-18 4:20am

Vinodh Muthusamy

Updated 17-Apr-18 7:41am

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2 solutions

Solution 1

If you hadn't defined your table with a row of timestamp there is no way to do it...

Posted 17-Apr-18 4:26am

Kornfeld Eliyahu Peter

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Wendelius · Accepted Answer · 2018-04-17T07:42:00

Solution 2

Not sure if I understand your question correctly. But if you have both tables, the modidied and the original, you can perhaps use EXCEPT operator

For example

SQL

SELECT SNo, EmployeeId, FirstName,LastName, Address
FROM ModifiedTable
EXCEPT
SELECT SNo, EmployeeId, FirstName,LastName, Address
FROM OriginalTable

Posted 17-Apr-18 7:42am

Wendelius

Comments

Vinodh Muthusamy 18-Apr-18 1:22am

i will be having only 1 table.

Wendelius 18-Apr-18 23:49pm

In that case if you don't want to add any change info such as timestamp or something else to the table, you can create a new table to log changes in the employee table and store the changes using a trigger on the employee table.

Have a look at Working with Triggers[^]