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.
Related
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'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.
We are migrating database structures, so I have one database with the old structure and one database with the new structure (both on the same server). I want to write queries to copy data from one to the other. I am expecting to go table-by-table as the schema is different. How do I do this?
You need to provide more details to get a more specific answer, but in general you just use the three-part name:
INSERT INTO NewDB.dbo.TableName
SELECT <columns>
FROM OldDB.dbo.Tablename
Are you looking for a way to do this automatically for all the tables?
You can write cross database queries like so
INSERT INTO NewDatabase.Schema.Table
SELECT Column1, Column2
FROM OldDatabase.Schema.Table
you can probably use Import data under tasks.Right Click the Target DB -> Tasks ->Import Data .You can also specify the source-> target mapping here.. and also write queries
I have two instances of same database and I want to have only one instance of database, so what I need is to import data from one databes to another.
Ofc I can go table by table, but there is lots of tables. I was wondering is there sql statement that can merge two databases or is there option in Microsoft SQL server database studio to this thing?
There is nothing built in like that.
If you don't want to go the manual way (comparing and then importing/exporting), you can look at a propriety tool like RedGate Data Compare that can accomplish this.
Is it possible to search and replace all occurrences of a string in all columns in all tables of a database? I use Microsoft SQL Server.
Not easily, though I can thing of two ways to do it:
Write a series of stored procedures that identify all varchar and text columns of all tables, and generate individual update statements for each column of each table of the form "UPDATE foo SET BAR = REPLACE(BAR,'foobar','quux')". This will probably involve a lot of queries against the system tables, with a lot of experimentation -- Microsoft doesn't go out of its way to document this stuff.
Export the entire database to a single text file, do a search/replace on that, and then re-import the entire database. Given that you're using MS SQL Server, this is actually the easier approach. Microsoft created the Microsoft SQL Server Database Publishing Wizard for other reasons, but it makes a fine tool for exporting all of the tables of a SQL Server database as a text file containing pure SQL DDL and DML. Run the tool to export all of the tables for a database, edit the resulting file as you need, and then feed the file back to sqlcmd to recreate the database.
Given a choice, I'd use the second method, as long as the DPW works with your version of SQL Server. The last time I used the tool, it met my needs (MS SQL Server 2000 / 2005) but it had some quirks when working with database Roles.
In MySQL, you can do it very easily like this:
update [table_name] set [field_name] = replace([field_name],'[string_to_find]','[string_to_replace]');
I have personally tested this successfully on a production server.
Example:
update users set vct_filesneeded = replace(vct_filesneeded,'.avi','.ai');
Ref: http://www.mediacollege.com/computer/database/mysql/find-replace.html
A good starting point for writing such a query is the "Search all columns in all the tables in a database for a specific value" stored procedure. The full code is at the link (not trivial, but copy/paste it and use it, it just works).
From there on it's relatively trivial to amend the code to do a replace of the found values.