Here’s a quick one for you.  If you happen to be managing SQL Servers with a large number of databases and availability groups, it can sometimes be difficult to keep track of which database belongs to which availability group.

sp_WhatsMyAG will tell you just that.  You can either provide it with the database name and it’ll tell you the AG that your specified database belongs to or you can leave the parameter NULL and you’ll get the AG of the database whose context you’re currently in.

The script is also available on our GitHub site.

 /******************************************************************
Author: David Fowler
Revision date: 07/03/2018
Version: 1
Description: Return the name of the AG that a specified database belongs to
© www.sqlundercover.com 
MIT License
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,
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 subject to the following conditions:
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******************************************************************/USE [master]
GO
IF EXISTS (SELECT 1 FROM sys.procedures WHERE name = 'sp_WhatsMyAG')
DROP PROC [sp_WhatsmyAG]
GO
CREATE PROCEDURE [dbo].[sp_WhatsMyAG]
(
@DBname NVARCHAR(128) = NULL
)
AS
BEGIN
SELECT cluster.database_name,ag.name AS AGname
FROM master.sys.availability_groups ag
INNER JOIN sys.availability_databases_cluster cluster ON ag.group_id = cluster.group_id
WHERE cluster.database_name = ISNULL(@DBname, db_name())
END
GO