I need some data of one db and some data of another db and perform some operation. Can we do this in sql server 2008? In my project suppose I want to fetch data of doctor and Chemist database in CRM Database and want to generate operation, How can we do that?
If both db belongs on the same sql server instance you can use full qualified names of objects like [DbName].[scheme].[table] if on different instances then you must create linked server. Of course, providing access as expected.
Related
Basic idea is we have our Silverlight application, and need to provide data to third party application when user want to send (export) a record of T_MainList
We maintain our data in Oracle and third party's SQL Server, third party people are providing us access to write a stored procedure, and a web service if needed.
Same table schema is maintained on both databases (Oracle and SQL Server), need to copy a record of T_MAINLIST on user request and it has other dependent data sublist can have multiple records and each sublist record can have multiple subsublist records
Is serializing data of whole dataset as xml and send them in stored procedure. De-serialized data in stored procedure (on SQL server) and insert data into the appropriate tables good idea?
Oracle has the possibility to directly connect to another database, see the example for MS SQL server here. That should be faster then using xml ex- and import...
I have a database called AQOA_Core with huge amount of data.
I have a newly created database called AQOA_Core1 which is basically empty. I want to write a query to duplicate AQOA_Core to AQOA_Core1 without the data. I guess to be precise I want to create a skeleton of the primary database into the secondary database.
PS: I use Toad for my database operations.
You can use SQL Server Script Wizard for scripting database objects. You can exclude data, and select the database object types you want to include in your script
Please check the SQL Server guide I referenced above,
I hope it helps you
I have two different data base, one is DEVORADB which i use for development, and another one is UATORADB which tester use for testing. UATORADB have the most updated data which is not in development. I want to query tables from UATORADB database in DEVORADB. I was writing in DEVORADB in such a way but not getting the result:
SELECT * FROM TABLE_NAME#UATDEVORADB.
For Oracle,
CREATE DATABASE LINK ...
e.g.
With a database link created and tested, you can do a query (of the style you showed) to retrieve rows from a remote database.
Reference: http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_5005.htm#SQLRF01205
FOLLOWUP
NOTE: In Oracle, the term "database" refers to the datafiles and logfiles associated with an Oracle "instance". To retrieve data from a second "database" means you need a second connection to the other database. Oracle provides a facility called a "database link". That allows a session(connection) to one database instance to connect to another database instance. (Without this facility, a client would need to create two separate connections, and would need to query the two databases separately.)
If this question is regarding querying from two separate "schemas" within the same database, as long as the user has sufficient privileges on objects in the second schema, the identifier can be qualified with the name of the schema, e.g.
SELECT * FROM UATDEVORADB.TABLE_NAME
To access data on a separate database, a database link can be used...
CREATE DATABASE LINK UADEVORADB
CONNECT TO user
IDENTIFIED BY password
USING 'uadevoradb' ;
(This will require an appropriate matching entry in the tnsnames.ora file on the Oracle server, or the oracle names server, or the connection details can be spelled out in place of a tnsnames.ora entry, something like:
CREATE DATABASE LINK UADEVORADB
CONNECT TO user IDENTIFIED BY password
USING '(DESCRIPTION=
(ADDRESS=(PROTOCOL=TCP)(HOST=uadevorahost1)(PORT=1521))
(CONNECT_DATA=(SERVICE_NAME=uadevoradb.domaindb)))'
If the "user" specified in the database link differs from the "owner" of the table on the remote system, and there's no synonym that references the table, the table identifier will need to be qualified with the owner...
SELECT * FROM OWNER.TABLE_NAME#UADEVORADB ;
I've got a database that resides on an SQL server box, and another in a separate mdb file.
Both contain similar data, but I'd like to run a query that checks unmatched records from a field that exists in both.
Is this something that's easy enough to do using ADO (VBA)? If so can you point me in the right direction?
The easiest would be to create a new Access Database or ADP, and link the tables from both the SQL server and the other MDB. That way you've got an interface to both from within the same instance, which allows you to query or join different tables.
When I right click on the database I want to export data from, I only get to select a single table or view, rather than being able to export all of the data. Is there a way to export all of the data?
If this is not possible, could you advise on how I could do the following:
I have two databases, with the same table names, but one has more data than the other
They both have different database names (Table names are identical)
They are both on different servers
I need to get all of the additional data from the larger database, into the smaller database.
Both are MS SQL databases
Being that both are MS SQL Servers, on different hosts... why bother with CSV when you can setup a Linked Server instance so you can access one instance from the other via a SQL statement?
Make sure you have a valid user on the instance you want to retrieve data from - it must have access to the table(s)
Create the Linked Server instance
Reference the name in queries using four name syntax:
INSERT INTO db1.dbo.SmallerTable
SELECT *
FROM linked_server.db.dbo.LargerTable lt
WHERE NOT EXISTS(SELECT NULL
FROM db1.dbo.SmallerTable st
WHERE st.col = lt.col)
Replace WHERE st.col = lt.col with whatever criteria you consider to be duplicate values between the two tables.
There is also a very good tool by Redgate software that syncs data between two databases.
I've also used SQL scripter before to generate a SQL file with insert statements that you can run on the other database to insert the data.
If you right-click on the database, under the Tasks menu, you can use the Generate Scripts option to produce SQL scripts for all the tables and data. See this blog post for details. If you want to sync the second database with the first, then you're better off using something like Redgate as suggested in mpenrow's answer.