SQL Join Query for Not Matching Amount from two Tables for the same Invoice #

I am trying to write a Join Query to pull the Invoice Amount for the Invoice Number which is not matching in two Tables.

Table 1 : Billing_Line - > Has line by line purchase detail for one Invoice Number. So, We Sum ( Invoice Amount ) for that Invoice Number.

Table 2 : Billing_HDR -> Has one line of record with Totalled Invoice Amount for the Invoice Number.

Both these Tables are feeded from different data source. So we found there is some mismatch in the Invoice Amount in Billing_HDR against the Billing_Line for some Invoice Numbers.

Below is the two set of queries .. Kindly help me to rewrite the logic.

with cte as
SUM(line_amt) LINE_FEES
from dbo.BILLING_line
where REQ_ID = 3895
group by INV_NUM
select cte.inv_num,vw.inv_num from cte
inner join vw_billinginv vw
on   cte.INV_NUM = vw.inv_num
where cte.LINE_FEES <>  vw.INV_AMT

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create view vw_billinginv
select		a.INV_NUM, a.INV_AMT 
from		dbo.BILLING_HDR a
where		ERR_CD = '0'
and			REQ_ID = 3895

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Brian CroweDatabase AdministratorCommented:
SELECT H.inv_num, H.inv_amt, SUM(L.line_amt) AS LINE_FEES
FROM Billing_Hdr AS H
INNER JOIN Billing_Line AS L
      ON H.inv_num = L.inv_num
GROUP BY H.inv_num, H.inv_amt
HAVING H.inv_amt <> SUM(L.line_amt)

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Vitor MontalvãoMSSQL Senior EngineerCommented:
What's wrong with your original query?
chokkaStudentAuthor Commented:
My apologize for the delay, I will check into the query and respond back
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Microsoft SQL Server

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