Multiple Databases with the same Data Source

[Anonymous]

Hi Guys,

I'm intrested in building a report based on multiple databases using the same data source.

I found some leads in the forums, but with no luck to the below.

Data source - SQL Server - single gateway

The DB list is based on a dynamic query, i have a list of them in a table called Companies (Select DBName from MainServer.dbo.Companies)

Query - Select * from [DynamicDB].dbo.Transactions

After that, I need to append them all to each other.

Any help will be appreciated!

PS, i tried using parameters (Server Name and DB), but I couldn't get more then one DB at a time.

Regards,

E.

[v-diye-msft]

Hi @Anonymous ,

1. You can use desktop to connect several database under same server. Get data > SQL server both Import and DQ mode work well.

2. Use dataflow in power bi service , it even allow combining several data source. Official document refers to: https://docs.microsoft.com/en-us/power-bi/service-dataflows-create-use

[Anonymous]

Thanks for the reply @v-diye-msft ,

Maybe I'm missing something, but I don't understand how your proposed solution is dynamic.

In my scenario, I don't want to address each source and manually concatenate it with the other sources.

BR,

Eliran.

[v-diye-msft]

Hi @Anonymous 

You can add the databse list in the parameter:

Then connect the SQL server using the current Databse, after fetching the data, then change the database:

Then try again: Get data>SQL server, both connection mode are fine. then you'll get the data from different databse.

[Anonymous]

Thanks again @v-diye-msft ,

I already tried the parameter approach, but it doesn't seem to answer my specific need.

Let's say that today I got 2 DB's, so my flow is:

1. define the DB's in the list
2. set first DB - fetch data
3. set second DB - fetch data
4. append the two into one table

Tomorrow, I'll have 10 DB's, should I manually redo all the steps? how is the parameter helps me?

My idea was a defining a loop that will do the steps dynamicly:

for each db in list

• query table
• append

end loop

I just can't seem to understand how to implement it.

Regards,

Eliran.

[v-diye-msft · Accepted solution]

Hi @Anonymous ,

I got your point and tried to set the query table dynamically:

1. In query editor pane, New source>SQL server> "Servername" (Keep database name as empty) > IM mode> select one table > Ok, then delete the Navigation step. you'll get the list of database in the first column. 

2. Right click the column > Add as new query

3. Then create the parameter based on the query, everytime you refresh the data source, the list will be updated,  we can fetch the data in different DB by switching parameter value.

But the problem is One parameter works for One database, and fetch one table under it:(DB is the parameter name)

let
    
    Source = Sql.Databases("MININT-8GMT4UN\SQLEXPRESS"),
    DB = Source{[Name= DB]}[Data]
in
    DB

You can select the specific table under the database, and final one is Table1

Then add another new query to get the table 2 :

Then we can use the M code to append Table1 with Table2 as new table, (Notes Table1 and Table2 are dynamically changing when we switch the parameter).

let
    Source = Table.Combine({Table_1, Table})
in
    Source

Please let me know if it works for you.