add/edit group with collection ids

src/Sql/dbo/Stored Procedures/Group_UpdateWithCollections.sql

@@ -0,0 +1,40 @@
+CREATE PROCEDURE [dbo].[Group_UpdateWithCollections]
+    @Id UNIQUEIDENTIFIER,
+    @OrganizationId UNIQUEIDENTIFIER,
+    @Name VARCHAR(MAX),
+    @CreationDate DATETIME2(7),
+    @RevisionDate DATETIME2(7),
+    @CollectionIds AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    EXEC [dbo].[Group_Update] @Id, @OrganizationId, @Name, @CreationDate, @RevisionDate
+
+    ;WITH [AvailableCollectionsCTE] AS(
+        SELECT
+            Id
+        FROM
+            [dbo].[Collection]
+        WHERE
+            OrganizationId = @OrganizationId
+    )
+    MERGE
+        [dbo].[CollectionGroup] AS [Target]
+    USING 
+        @CollectionIds AS [Source]
+    ON
+        [Target].[CollectionId] = [Source].[Id]
+        AND [Target].[GroupId] = @Id
+    WHEN NOT MATCHED BY TARGET
+    AND [Source].[Id] IN (SELECT [Id] FROM [AvailableCollectionsCTE]) THEN
+        INSERT VALUES
+        (
+            [Source].[Id],
+            @Id
+        )
+    WHEN NOT MATCHED BY SOURCE
+    AND [Target].[GroupId] = @Id THEN
+        DELETE
+    ;
+END