Change temporary table to table varible using sqlserver 2012 - loops

Question

I want to remove the #temp1 from my query and use it as another table varible that work same as it is working using #temp1 table.
Here is my query
DROP TABLE #temp1
;WITH cteSales AS(
SELECT BillDate,
BillNo,
'-' AS NarrationNumber,
TotalAmount,
0 AS ReceivedAmount
FROM SalesMaster
WHERE SalesMaster.ClientID = #ClientID
AND SalesMaster.BillDate BETWEEN #FromDate AND #ToDate
UNION ALL
SELECT [Date] AS BillDate,
SalesAccount.BillNo,
SalesAccount.NarrationNumber,
0 AS TotalAmount,
Amount AS ReceivedAmount
FROM SalesAccount
LEFT JOIN SalesMaster sm
ON sm.BillNo = SalesAccount.BillNO
WHERE sm.ClientID = #ClientID
AND sm.BillDate BETWEEN #FromDate AND #ToDate
), cteFormattedSales AS(
SELECT ROW_NUMBER() OVER(ORDER BY BillNo ASC, BillDate ASC) AS RowNum,
*
FROM cteSales
)
SELECT cfs1.RowNum,
cfs1.BillDate,
cfs1.BillNo,
cfs1.NarrationNumber,
cfs1.TotalAmount,
cfs1.ReceivedAmount,
(cfs1.TotalAmount - cfs1.ReceivedAmount) AS DueAmount INTO #temp1
FROM cteFormattedSales cfs1
DECLARE #BillDate date,
#PrevBillNo INT,
#NextBillNo INT,
#NarrationNumber VARCHAR(15),
#TotalAmount DECIMAL(18, 2),
#ReceivedAmount DECIMAL(18, 2),
#NextDue DECIMAL(18, 2),
#PrevDue DECIMAL(18, 2)
DECLARE #finalTable TABLE(
BillDate date,
BillNo INT,
NarrationNumber NVARCHAR(15),
TotalAmount DECIMAL(18, 2),
ReceivedAmount DECIMAL(18, 2),
DueAmount DECIMAL(18, 2)
)
DECLARE #TotalRecords INT,
#Counter INT = 1,
#CarryOverAmount DECIMAL(18, 2)
SELECT #TotalRecords = COUNT(*)
FROM #temp1
SELECT #BillDate = t.BillDate,
#PrevBillNo = t.BillNo,
#NarrationNumber = t.NarrationNumber,
#TotalAmount = t.TotalAmount,
#ReceivedAmount = t.ReceivedAmount,
#PrevDue = t.DueAmount
FROM #temp1 t
WHERE t.RowNum = #Counter
WHILE #Counter <= #TotalRecords
BEGIN
SELECT #BillDate = t.BillDate,
#NextBillNo = t.BillNo,
#NarrationNumber = t.NarrationNumber,
#TotalAmount = t.TotalAmount,
#ReceivedAmount = t.ReceivedAmount,
#NextDue = t.DueAmount
FROM #temp1 AS t
WHERE t.RowNum = #Counter
IF (#Counter = 1)
SET #CarryOverAmount = #TotalAmount
SET #PrevDue = #CarryOverAmount - #ReceivedAmount
IF #PrevBillNo <> #NextBillNo
BEGIN
SET #PrevBillNo = #NextBillNo
SET #CarryOverAmount = #TotalAmount + #PrevDue
SET #PrevDue = 0
END
INSERT INTO #finalTable
(
BillDate,
BillNo,
NarrationNumber,
TotalAmount,
ReceivedAmount,
DueAmount
)
VALUES
(
#BillDate,
#PrevBillNo,
#NarrationNumber,
#TotalAmount,
#ReceivedAmount,
CASE
WHEN #NarrationNumber = '-' THEN #CarryOverAmount
ELSE #PrevDue
END
)
IF #PrevBillNo = #NextBillNo
BEGIN
IF #Counter > 1
BEGIN
SET #CarryOverAmount = CASE
WHEN #NarrationNumber = '-' THEN #CarryOverAmount
+ #PrevDue
ELSE #CarryOverAmount - #ReceivedAmount
END
END
END
SET #Counter = #Counter + 1
END
SELECT *
FROM #finalTable
Here the code that i get error on invalid ReceivedAmount
SELECT #BillDate = t.BillDate,
#PrevBillNo = t.BillNo,
#NarrationNumber = t.NarrationNumber,
#TotalAmount = t.TotalAmount,
#ReceivedAmount = t.ReceivedAmount,
#PrevDue = t.DueAmount
FROM #Temp1 t
WHERE t.RowNum = #Counter
WHILE #Counter <= #TotalRecords
BEGIN
SELECT #BillDate = t.BillDate,
#NextBillNo = t.BillNo,
#NarrationNumber = t.NarrationNumber,
#TotalAmount = t.TotalAmount,
#ReceivedAmount = t.ReceivedAmount,
#NextDue = t.DueAmount
FROM #Temp1 AS t
WHERE t.RowNum = #Counter

Answer 1

You need to do just 3 steps:
A. DECLARE table variable
-- correct types of columns
DECLARE #temp1 TABLE(
RowNum int
,BillDate datetime
,BillNo int
,NarrationNumber int
,TotalAmount money
,RecievedAmount money
,DueAmount money
)
B. Rewrite SELECT ... INTO -> INSERT INTO .. SELECT
INSERT INTO #temp1
SELECT cfs1.RowNum,
cfs1.BillDate,
cfs1.BillNo,
cfs1.NarrationNumber,
cfs1.TotalAmount,
cfs1.ReceivedAmount,
(cfs1.TotalAmount - cfs1.ReceivedAmount) AS DueAmount
FROM cteFormattedSales cfs1
... etc ...
C. Replace all #temp1 to #temp1