I've got about 13,000 AccountIDs that I need to pull various data from several data tables using left-joins. The total # of accountIDs is in the millions. I don't have write-access to the server but I was wondering if there was a way I could maybe create a custom/temporary table anyway and do a join to that rather than writing a really, really long Where AccountID in (.....) statement. The accountIDs are currently in a single Excel column so I'd have to get them back in the server somehow.
Thoughts?
You can use OPENDATASOURCE to access your Excel file, but someone will have to push you the Excel file to the server (not ideal).
SELECT * FROM OPENDATASOURCE('Microsoft.Jet.OLEDB.4.0',
'Data Source=C:\DataFolder\Documents\TestExcel.xls;Extended Properties=EXCEL 5.0')...[Sheet1$] ;
You can ask your DBA team to install a SQl Server Client on your local machine and set up a linked server to the live server, and you are all set. Ask them to set up a view of the data you need, and give you access to the view. That's all you need, I guess.
Related
I'm playing around with a table in an MS Access database. The table has a primary key of CLIENT_NUMBER. My corporation maintains an Oracle database that has a table which contains clients contact information (address, phone numbers, emails, etc). It also has the CLIENT_NUMBER field. I got to thinking that maybe I can join the 2 tables from the different databases and run some queries. I dug around on the net and I couldn't really find any reference, so I think this is a long shot and a silly question, but is that possible? Maybe through a DB link or something? For reference, I use SQL Developer 3.2.xx for sql developing.
I would copy the table in oracle to Access using what's called a sqlpassthrough query in Access. linked tables to oracle in my experience, perform very poorly, and if you are also thinking about joining to a local table in Access, probably much worse.
Passthrough queries are very quick since Access simply just sends the query for execution to the target server/database based on the connection you identify for the passthrough query, hence the name "pass-through".
The driver in the connect string may not work for you, and it may need more info depending on how things are setup in your environment, so you will have to work that out.
'creates the passthrough query to oracle
With CurrentDb.CreateQueryDef("qOracleConn")
.Connect = "ODBC;Driver={Microsoft ODBC for Oracle};Server=oracleservername;Uid=oracledbusername;Pwd=oracledbpassword;"
.sql = "SELECT * FROM tableinoracle"
End With
'creates the local table in access
CurrentDb.Execute "SELECT * INTO OracleClients FROM qOracleConn"
I have had an odd error I cannot explain. Basically, I am running a query to my SQL database using excel and am having non-existent data pop up when it comes to a very particular order in my database.
Here is a simple query surrounding this order:
select * from OR200100 where OR200100.OR20001='0000793605'
Here is the output in EXCEL
And here is the same output in SQL
what is happening here? How could the same query generate 2 different results?
Run SQL Server Profiler against the database if you can, then compare the output to the sql query that you are running in ssms.
OK, so it's SQL Server then, that's important because different SQL products can have very different idiosyncrasies and controls.
The next things to check are these:
Is OR200100 a Table or a View? If it's a view then post it's code.
Are you using the same Login/account from both Excel and SSMS?
Are you sure that you are connecting to the same Server and Database? SSMS tells you what you are connected to, but client apps like Excel do not and it is very common for this type of problem to be caused by the app connecting to a Dev or QA version of the database. See here for some of the different ways that this can happen:
So I had a very similar problem, my query was grouping by week numbers. What I found was that one of the queries had set datefirst 5 set whilst the other didn't. I guess the key thing here is make sure, if you are using any SET operations in your ssms queries, these are identical to those in the Excel query string.
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.
I have database connection to database DB1. The only thing I could do - execute any t-sql statements including using stored procedures. I want to export the specific table (or even the specific rows of specific table) to my local database. As you can read abve, DBs are on diffrent servers meaning no direct connection is possible. Therefore question: Is it possible to write query that returns the other query to execute on local server and get data? Also note, that table contains BLOBs. Thanks.
If you have SQL Server Management Studio, you can use the data import function on your local database to get the data. It works as long as you have Read/Select access on the tables you are trying to copy.
If you have Visual Studio you can use the database tools in there to move data between two servers as long as you can connect to both from your workstation.
Needs Ultimate or Premium though:
http://msdn.microsoft.com/en-us/library/dd193261.aspx
RedGate has some usefull tools too:
http://www.red-gate.com/products/sql-development/sql-compare/features
Maybe you should ask at https://dba.stackexchange.com/ instead.
If you can login to the remote db (where you can only issue t-sql), you may create linked server on your local server to the remote and use it later directly in queries, like:
select * from [LinkedServerName].[DatabaseName].[SchemaName].[TableName]
I need to do the following query (for example):
SELECT c1.CustomerName FROM Customer as c1
INNER JOIN [ExternalServer].[Database].[dbo].[Customer] as c2
ON c2.RefId = c1.RefId
For some security reason my client doesn't allow me to create a linked server. The user under whom I execute this query has access to both tables. Is it possible to make it work without using linked server? Thanks.
You could use OPENROWSET, which'll require the connection info, username & password...
While I understand that the client believes that having an always-on connection to their data is risky, that's why you lock down the account. OPENROWSET means including the connection info in plain text.
'Linked Server' is a very specific thing -- basically, a permanent connection between servers. I can think of all sorts of reasons not to want that, while at the same time having no problem with folks writing queries that combine data from the two different data sources.
Anyway, depending on your requirement -- if this is just for ad hoc querying, OPENROWSET is good if inside of SQL-Server, or if you want to do this in MS Access, just link to the two tables, and your Access query won't care that one comes from one server, and one comes from another.
Alternatively, with a web or windows front-end, you could indpendently query each table into a data object, and then build a separate query on top of that.
Http Endpoints...
WebServices...
There's a million ways. I wouldn't be so quick to assume, as #Lasse suggests, that any form of 'linking' this data together would make you some kind of rougue data linker.