sql - 部分番号 SQL

Question

以下のクエリがあります....

SELECT  NGPCostPosition.ProjectNo, NGPCostPosition.CostCat, 
        NGPCostPosition.DocumentNumber, NGPCostPosition.TransactionDate, 
        NGPCostPosition.UnitCost, NGPCostPosition.TotalCost, 
        NGPCostPosition.CreditorEmployeeName, NGPCostPosition.SummaryCostCat, 
        PurchaseNGP_PL.CalculatedCost,
CASE
    WHEN
        DATEPART(MONTH, NGPCostPosition.TransactionDate) = DATEPART(MONTH, GETDATE())  
        AND
        DATEPART(YEAR, NGPCostPosition.TransactionDate) = DATEPART(YEAR, GETDATE())
    THEN TotalCost
    ELSE 0
END AS CurrentMonthCost2

FROM  NGPCostPosition INNER JOIN
      PurchaseNGP_PL 
        ON  NGPCostPosition.ProjectNo = PurchaseNGP_PL.PAPROJNUMBER 
        AND NGPCostPosition.DocumentNumber = PurchaseNGP_PL.DocumentNumber 
        AND NGPCostPosition.SummaryCostCat = PurchaseNGP_PL.SummaryCostCat
WHERE NGPCostPosition.ProjectNo = @ProjectNumber 
AND   CostCat ='P070' 
OR    CostCat ='P080' 
AND   NGPCostPosition.ProjectNo = @ProjectNumber 
AND   NGPCostPosition.TotalCost = ABS(PurchaseNGP_PL.CalculatedCost) 

GROUP BY NGPCostPosition.ProjectNo, 
         NGPCostPosition.CostCat, 
         NGPCostPosition.DocumentNumber, 
         NGPCostPosition.TransactionDate,
         NGPCostPosition.UnitCost,
         NGPCostPosition.TotalCost, 
         NGPCostPosition.CreditorEmployeeName,
         NGPCostPosition.SummaryCostCat, 
         PurchaseNGP_PL.CalculatedCost

それは私に以下の結果を与えます...

私がやりたいのは、列「ProjectNo」を最初の 5 つの数字のみに制限することです。(例: 12169)

これが可能かどうか、またこれを行うための最良の方法は何ですか?