Join and/or Sub QUERY with Composite Key Tables - sql

Question

I asked a similar question a few days ago. I have three tables. The DDL for each table is found in this thread (SQL JOIN not returning any results). My needs have changed slightly (this is my shocked face) and I haven't had much success in getting to what I need; close, but not quite.
What I would like to do is hand in a users name (or part of there name, i.e. LIKE) and get back the Description (Variable.Value table) and the document filename (Documents table). Of the latest revision. I have done this to get the latest rev with great success. I have tried in a myriad of ways to plug in the authors name (variablevalue table) to get exactly what I am after. I have tried a subquery with no luck either. I think the composite keys are catching me out as I have not done a lot of work with composite keys as yet. TIA.
Select Distinct vv.ValueCache
from VariableValue vv, Documents d
where d.filename like 'ECO-%' and d.deleted = 0 and d.DocumentID = vv.DocumentID and
vv.VariableID = ( Select VariableID
from Variable
where VariableName like 'Description') and
vv.RevisionNo = ( Select Max( Vv1.RevisionNo )
From VariableValue vv1
where vv1.VariableID = vv.VariableID and
vv1.DocumentID = d.DocumentID and
vv1.ValueText is not null ) and
vv.ValueCache != ''
order by vv.ValueCache ASC
Here is the missing DDL for the Documents table.
USE [PDM_NT_Vault]
GO
/****** Object: Table [dbo].[Documents] Script Date: 9/29/2017 9:51:40 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Documents](
[DocumentID] [int] IDENTITY(1,1) NOT NULL,
[Filename] [nvarchar](255) NULL,
[LockProject] [int] NULL CONSTRAINT [DF__TemporaryU__Mode__3B75D760] DEFAULT ((2)),
[UserID] [int] NULL CONSTRAINT [DF__Temporary__UserI__3C69FB99] DEFAULT ((0)),
[LockDomain] [nvarchar](255) NULL,
[LockPath] [nvarchar](255) NULL,
[Busy] [bit] NOT NULL CONSTRAINT [DF__TemporaryU__Busy__3E52440B] DEFAULT ((0)),
[Flushed] [int] NULL CONSTRAINT [DF_Documents_Flushed] DEFAULT ((1)),
[DefValStored] [int] NULL CONSTRAINT [DF_Documents_DefValStored] DEFAULT ((0)),
[RevGenCounter] [int] NULL,
[LatestRevisionNo] [int] NULL,
[CurrentStatusID] [int] NULL,
[WorkingVersionModified] [int] NULL,
[ExtensionID] [int] NULL CONSTRAINT [DF_Documents_ExtensionID] DEFAULT ((1)),
[LockDate] [datetime] NULL,
[UserDocRefsModified] [bit] NULL,
[Deleted] [bit] NOT NULL CONSTRAINT [DF_Documents_Deleted] DEFAULT ((0)),
[Shared] [int] NULL CONSTRAINT [DF_Documents_Shared] DEFAULT ((0)),
[LockViewID] [uniqueidentifier] NULL,
[Link] [bit] NULL CONSTRAINT [DF_Documents_Link] DEFAULT ((0)),
[DocTypeID] [int] NULL,
[ObjectTypeID] [int] NULL CONSTRAINT [DF_Documents_ObjectTypeID] DEFAULT ((1)),
[Flags] [int] NOT NULL CONSTRAINT [DF_Documents_Flags] DEFAULT ((0)),
CONSTRAINT [aaaaaDocuments1_PK] PRIMARY KEY CLUSTERED
(
[DocumentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 80) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Documents] WITH NOCHECK ADD CONSTRAINT [Documents_FK00] FOREIGN KEY([UserID])
REFERENCES [dbo].[Users] ([UserID])
GO
ALTER TABLE [dbo].[Documents] CHECK CONSTRAINT [Documents_FK00]
GO
ALTER TABLE [dbo].[Documents] WITH NOCHECK ADD CONSTRAINT [FK_Documents_DocType] FOREIGN KEY([DocTypeID])
REFERENCES [dbo].[DocType] ([DocTypeID])
GO
ALTER TABLE [dbo].[Documents] CHECK CONSTRAINT [FK_Documents_DocType]
GO
ALTER TABLE [dbo].[Documents] WITH NOCHECK ADD CONSTRAINT [FK_Documents_FileExtension] FOREIGN KEY([ExtensionID])
REFERENCES [dbo].[FileExtension] ([ExtensionID])
GO
ALTER TABLE [dbo].[Documents] CHECK CONSTRAINT [FK_Documents_FileExtension]
GO
ALTER TABLE [dbo].[Documents] WITH NOCHECK ADD CONSTRAINT [FK_Documents_ObjectType] FOREIGN KEY([ObjectTypeID])
REFERENCES [dbo].[ObjectType] ([ObjectTypeID])
NOT FOR REPLICATION
GO
ALTER TABLE [dbo].[Documents] CHECK CONSTRAINT [FK_Documents_ObjectType]
GO
ALTER TABLE [dbo].[Documents] WITH CHECK ADD CONSTRAINT [FK_Documents_Projects1] FOREIGN KEY([LockProject])
REFERENCES [dbo].[Projects] ([ProjectID])
GO
ALTER TABLE [dbo].[Documents] CHECK CONSTRAINT [FK_Documents_Projects1]
GO