SQL Server Count items available - sql

Question

I am building a pretty simple inventory items database that will allow me to check out items between dates. I will need to return a single row that will tell me the available, reserved, and total inventory of this item. I cannot seem to get this correct.
BEGIN TRAN
DECLARE #startDate AS DATE
DECLARE #endDate AS DATE
DECLARE #partID AS INT
SET #startDate = '4/15/2015'
SET #endDate = '4/25/2015'
SET #partID = 248
SELECT COUNT(ii.[PartId] WHERE ii.[PartStatus] = 1 ) AS [Available],
COUNT(ii.[PartId] WHERE ii.[PartStatus] = 2 ) AS [Reserverd],
COUNT(ii.[PartId] WHERE ii.[PartStatus] <> 4 ) AS [TotalInventory],
FROM ShipListInventory.dbo.InventoryItems AS ii
LEFT JOIN ShipListInventory.dbo.InventoryItemCalendars AS iic
ON iic.[ItemId] = ii.[Id]
WHERE iic.[StartDate] NOT BETWEEN #startDate AND #endDate
AND iic.[InboundDate] NOT BETWEEN #startDate AND #endDate
AND ii.[PartId] = 248
COMMIT TRAN
EDIT: I am only returning rows from InventoryItemCalendarsI want to return items from InventoryItems
CREATE TABLE [dbo].[InventoryItems](
[Id] [INT] IDENTITY(1,1) NOT NULL,
[PartSatuts] [INT] NOT NULL,
[PartId] [INT] NOT NULL,
[Barcode] [NVARCHAR](MAX) NULL,
[PicturePath] [NVARCHAR](255) NULL,
[Notes] [NVARCHAR](1000) NULL,
CONSTRAINT [PK_dbo.InventoryItems] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE [dbo].[InventoryItems] WITH CHECK ADD CONSTRAINT [FK_dbo.InventoryItems_dbo.Parts_PartId] FOREIGN KEY([PartId])
REFERENCES [dbo].[Parts] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[InventoryItems] CHECK CONSTRAINT [FK_dbo.InventoryItems_dbo.Parts_PartId]
GO
CREATE TABLE [dbo].[InventoryItemCalendars](
[Id] [INT] IDENTITY(1,1) NOT NULL,
[StartDate] [DATETIME] NOT NULL,
[InboundDate] [DATETIME] NOT NULL,
[ProjectNumber] [INT] NOT NULL,
[ItemId] [INT] NOT NULL,
[Project_Id] [INT] NULL,
CONSTRAINT [PK_dbo.InventoryItemCalendars] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[InventoryItemCalendars] WITH CHECK ADD CONSTRAINT [FK_dbo.InventoryItemCalendars_dbo.InventoryItems_ItemId] FOREIGN KEY([ItemId])
REFERENCES [dbo].[InventoryItems] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[InventoryItemCalendars] CHECK CONSTRAINT [FK_dbo.InventoryItemCalendars_dbo.InventoryItems_ItemId]
GO
ALTER TABLE [dbo].[InventoryItemCalendars] WITH CHECK ADD CONSTRAINT [FK_dbo.InventoryItemCalendars_dbo.Projects_Project_Id] FOREIGN KEY([Project_Id])
REFERENCES [dbo].[Projects] ([Id])
GO
ALTER TABLE [dbo].[InventoryItemCalendars] CHECK CONSTRAINT [FK_dbo.InventoryItemCalendars_dbo.Projects_Project_Id]
GO
INSERT INTO ShipListInventory.[dbo].[InventoryItems]([PartSatuts],[PartId]) VALUES(1,1);
INSERT INTO ShipListInventory.[dbo].[InventoryItems]([PartSatuts],[PartId]) VALUES(2,1);
INSERT INTO ShipListInventory.[dbo].[InventoryItems]([PartSatuts],[PartId]) VALUES(1,1);
INSERT INTO ShipListInventory.[dbo].[InventoryItems]([PartSatuts],[PartId]) VALUES(4,1);
INSERT INTO ShipListInventory.[dbo].[InventoryItemCalendars](StartDate,InboundDate,Project_Id, ItemId)VALUES('1/1/2015', '4/15/2015',1,1)
INSERT INTO ShipListInventory.[dbo].[InventoryItemCalendars](StartDate,InboundDate,Project_Id, ItemId)VALUES('1/1/2015', '4/15/2015',1,1)
INSERT INTO ShipListInventory.[dbo].[InventoryItemCalendars](StartDate,InboundDate,Project_Id, ItemId)VALUES('1/1/2015', '4/14/2015',1,2)
INSERT INTO ShipListInventory.[dbo].[InventoryItemCalendars](StartDate,InboundDate,Project_Id, ItemId)VALUES('1/1/2015', '4/15/2015',1,1)
this isnt returning data from correct table it is only returning data form InventoryItemCalendars which isnt what i want. i want it to only use this to check the dates. it should return the items from InventoryItems table

Answer 1

Here is a syntactically correct version:
SELECT SUM(CASE WHEN ii.[PartStatus] = 1 THEN 1 ELSE 0 END) AS [Available],
SUM(CASE WHEN ii.[PartStatus] = 2 THEN 1 ELSE 0 END) AS [Reserverd],
SUM(CASE WHEN ii.[PartStatus] <> 4 THEN 1 ELSE 0 END) AS [TotalInventory]
FROM ShipListInventory.dbo.InventoryItems ii LEFT JOIN
ShipListInventory.dbo.InventoryItemCalendars AS iic
ON iic.[ItemId] = ii.[Id]
WHERE iic.[StartDate] NOT BETWEEN #startDate AND #endDate AND
iic.[InboundDate] NOT BETWEEN #startDate AND #endDate AND
ii.[PartId] = 248;
There is no transaction when you do a select, so committing is not necessary.

Answer 2

SELECT COUNT(CASE WHEN ii.[PartStatus] = 1 THEN ii.[PartId] END) AS [Available],
COUNT(CASE WHEN ii.[PartStatus] = 2 THEN ii.[PartId] END) AS [Reserverd],
COUNT(CASE WHEN ii.[PartStatus] <> 4 THEN ii.[PartId] END) AS [TotalInventory]

Answer 3

With the help of Juan Carlos I have found the correct answer.
SELECT COUNT(CASE WHEN ii.[PartSatuts]=1 THEN ii.[PartId] END ) AS [Available],
COUNT(CASE WHEN ii.[PartSatuts]=2 THEN ii.[PartId] END ) AS [Reserverd],
COUNT(CASE WHEN ii.[PartSatuts]<> 4 THEN ii.[PartId] END ) AS [TotalInventory]
FROM ShipListInventory.dbo.InventoryItems AS ii
LEFT JOIN ShipListInventory.dbo.InventoryItemCalendars AS iic
ON iic.ItemId = ii.Id
WHERE ((iic.StartDate NOT BETWEEN #startDate AND #endDate
AND iic.InboundDate NOT BETWEEN #startDate AND #endDate)
OR iic.InboundDate IS NULL)
AND ii.PartId = 248