All we need is an easy explanation of the problem, so here it is.
I am trying to find out which of the DB don’t have active connection and the extended attribute of that DB.
I have this script that works wonderfully and creates a table with all DBs name and the amount of active connection.
Can someone please assist how to I add an additional column that will show the extended attribute called "Test" for each DB?
SELECT @@ServerName AS server ,NAME AS dbname ,COUNT(STATUS) AS number_of_connections ,GETDATE() AS timestamp FROM sys.databases sd LEFT JOIN sysprocesses sp ON sd.database_id = sp.dbid WHERE database_id NOT BETWEEN 1 AND 4 GROUP BY NAME
How to solve :
I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.
Extended properties are database-scoped so you’ll need to query values in the context of each database.
The below example uses dynamic SQL to accomplish this by qualifying
sys.extended_properties with the name of each database and concatenating results for all databases with
UNION ALL. This also uses
sys.dm_exec_sessions instead of the
sysprocesses view as recommended in the documentation. You may need to tweak the query according to your use case and environment (e.g. omit non-readable secondary AG replicas).
DECLARE @SQL nvarchar(MAX); WITH databases AS ( SELECT sd.name, sd.database_id FROM sys.databases sd WHERE sd.database_id > 4 AND state_desc = 'ONLINE' ) SELECT @SQL = STRING_AGG(CAST(N' SELECT @@SERVERNAME AS server , N' + QUOTENAME(d.name,'''') + N' AS dbname , (SELECT COUNT(1) FROM sys.dm_exec_sessions AS sdes WHERE sdes.database_id = ' + CAST(d.database_id AS nvarchar(10)) + N') AS number_of_connections , SYSDATETIME() AS timestamp , (SELECT value FROM ' + QUOTENAME(d.name) + N'.sys.extended_properties WHERE class_desc = N''DATABASE'' AND name = N''Test'') AS TestExtendedPropertyValue' AS nvarchar(MAX)) ,' UNION ALL') FROM databases AS d; --SELECT @SQL; EXEC sp_executesql @SQL; GO
Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂