SQL SERVER – A Quick Note on DB_ID() and DB_NAME() – Get Current Database ID – Get Current Database Name

Posted by pinaldave on SQL Authority See other posts from SQL Authority or by pinaldave
Published on Thu, 13 Jan 2011 01:30:37 +0000 Indexed on 2011/01/13 1:55 UTC
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Quite often a simple things makes experienced DBA to look for simple thing. Here are few things which I used to get confused couple of years ago. Now I know it well and have no issue but recently I see one of the DBA getting confused when looking at the DBID from one of the DMV and not able to related that directly to Database Name.

-- Get Current DatabaseID
SELECT DB_ID() DatabaseID;
-- Get Current DatabaseName
SELECT DB_NAME() DatabaseName;
-- Get DatabaseName from DatabaseID
-- Get DatabaseID from DatabaseName
SELECT DB_ID('tempdb') DatabaseName;
-- Get all DatabaseName and DBID
SELECT name,database_id
FROM sys.databases;

Reference: Pinal Dave (http://blog.SQLAuthority.com)

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