在SQL Server中选择数据库名称和扩展属性

Question

I have three databases, starting with "MD_" that I have added in SQL Server 2012. Each of them has an extended property NAME = "DESCRIPTION"

What I like to have returned is a result set of the database names and the "DESCRIPTION" value.

Selecting the database names are easy enough but I could use some help with joining in the extended property.

BEGIN
    SELECT A.NAME
    FROM sys.databases A
    Where LEFT(A.NAME, 3) = 'MD_'
END

Results:

NAME   DESCRIPTION
MD_1   Initial
MD_2   Secondary
MD_3   Final

Any help would be greatly appreciated! Kind regards

Answer 1

The link in the comments helped me get here but sys.extended_properties is a per database view. So the properties for each database are contained in the database. This worked though.

CREATE TABLE #EP (DatabaseName varchar(255), PropertyName varchar(max), 
            PropertyValue varchar(max))

EXEC sp_msforeachdb 'INSERT INTO #EP SELECT ''?'' AS DatabaseName, 
            CAST(name AS varchar), CAST(Value AS varchar) 
        FROM [?].sys.extended_properties WHERE class=0'

And if you want all the databases and just properties where they exist.

SELECT db.Name, #EP.PropertyName, #EP.PropertyValue
FROM sys.databases db
LEFT OUTER JOIN #EP
    ON db.name = #EP.DatabaseName

Answer 2

Here is another option, does not use temporary table but returns multiple results...

EXEC sp_msforeachdb N'SELECT name, value 
FROM [?].sys.fn_listextendedproperty(default, default, default, default, default, default, default)'