How to synchronize two database tables where one database is live and other one is not

Question

1.00/5 (1 vote)

See more:

Hallo ALL,

How can i synchronize two databases sharing the same server. I have tables in each database. If my live database has some new entries in its tables. How can i compare with my other database table and add it to the other table. ?

For example, how can i have the data which is added new in table1 "C,D,E" inserted in Table 2

Thank you!

What I have tried:

Things i have tried:

SQL

INSERT INTO  [Database2].[dbo].[Table2]
SELECT * FROM [database1].[dbo].[Table1]

this query inserts all data in the table1 again, how can it be synchronized all time so that in case if there is any new data in Table1 it updates into table2

Table 1 : LIVE DATA

| Field1 | Field2 | Field3 |
 | ------ | ------ | -----: |
 |  A     |   1    |  10   |
 |  B     |   2    |  20   |
 |  C     |   3    |  30   |
 |  D     |   4    |  40   |
 |  E     |   5    |  50   |

Table 2 :

| Field1 | Field2 | Field3 |
 | ------ | ------ | -----: |
 |  A     |   1    |   10   |
 |  B     |   2    |   20   |

Posted 9-Jan-18 1:33am

Member 12727134

Updated 18-Jan-18 23:37pm

Maciej Los

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Answer 1 · 2018-01-09T05:41:00

Solution 1

Seems, you're talking about Database Mirroring (SQL Server) | Microsoft Docs[^], which is the best option to you.
If your non-live database is on the same server, you may want to create a stored procedure[^] which inserts data into live database, then into the mirroring database.

Posted 9-Jan-18 5:41am

Maciej Los

Member 13632036 · Answer 2 · 2018-01-18T23:37:00

Solution 2

If you have distinct value in Field1 field you can try this

INSERT INTO [Database2].[dbo].[Table2]

SELECT * FROM [database1].[dbo].[Table1] with(nolock)
where Field1 not in (select Field1 FROM [Database2].[dbo].[Table2] with(nolock) )

Posted 18-Jan-18 23:37pm

Member 13632036