How do I run a query against multiple databases?

Can you query from multiple databases?

In summary, if all your databases are on one server instance, then multiple database querying is as easy as prefixing the table name with the database or schema name depending on your database software. In other cases, you need to have one database with multiple schemas to make this technique work.

How do I run a SQL query on multiple databases?

Open a new Query Window and write a query which has to be executed against multiple database of a server. Right click in the window and Select an option “Run On Multiple Targets” as shown below. This will open a new window which will have all the database available on the current server listed as shown below.

How do I query data from two databases?

The tables and databases will be created under the same server.1Step 1: Create the first database and table. ... 2Step 2: Create the second database and table. ... 3Step 3: Join the tables from the different databases in SQL Server. ... 4Step 4 (optional): Drop the databases created.

How do I run a query on all databases?

DECLARE @Sql NVARCHAR(MAX) = NULL; SELECT @Sql = COALESCE(@Sql + ' UNION ALL ' + CHAR(13) + CHAR(10), '' ) + 'SELECT * FROM ' + QUOTENAME([name]) + '.. customer' FROM master. sys. databases WHERE NOT [name] IN ( 'master', 'tempdb', 'model', 'msdb' ); PRINT @Sql; -- EXECUTE ( @Sql );