Using .Databases with a misspelled database name changes database name in SMO

This bug was found using dbatools: https://github.com/dataplat/dbatools/issues/8598

There are two ways to select a single database from the list of databases from a Microsoft.SqlServer.Management.Smo.Server object: $server.Databases | Where-Object Name -EQ <dbname> and $server['<dbname>'].

The first one works without problems. But the second one changes the casing of the name from the original one to the one used to query the database.

Here is the code to show that:

Import-Module -Name dbatools

# correct:
$server = [Microsoft.SqlServer.Management.Smo.Server]::new('sql01')
$server.Databases | Where-Object Name -EQ Master | Select-Object -ExpandProperty Name
$server.Databases['Master'] | Select-Object -ExpandProperty Name

# wrong:
$server = [Microsoft.SqlServer.Management.Smo.Server]::new('sql01')
$server.Databases['Master'] | Select-Object -ExpandProperty Name
$server.Databases | Where-Object Name -EQ Master | Select-Object -ExpandProperty Name

And here is a screenshot:

Yes, I'm using not the current version - but I don't have the current version at hand. But I think it will take you only minutes to test this in your test environment. If it is fixed with the current version: Sorry to bother you.

まず、Server.Databases とその文字列インデクサーを使用した PowerShell の例で動作を再現します。次に、Databases コレクションの検索処理の実装を追跡し、大文字と小文字が異なるクエリ、またはスペルミスのあるクエリに対するリグレッションテストのカバレッジを追加します。データベースをクエリしても、元のデータベース名やその大文字と小文字が変更されなくなれば完了です。