如何總結兩個表格的結果？

Question

SupplierId NetAmt 
1   400 
2   400 
3   300 
2   200 

SupplierId RecdAmt 
2   200 
2   200 
2   200 

Expectect結果：

1 400 
3 300 

第一個表是對內表和二表是支付表，當我做支付給供應商誰的完全完成支付應不再顯示

Answer 1

你可以像這樣

select SupplierId , NetAmt from table1 
where SupplierId not in (select SupplierId from table2) 

或

喲ü也可以嘗試這個

SELECT SupplierId , NetAmt 
FROM Table1 t1 
    LEFT JOIN Table2 t2 ON t1.SupplierId = t2.SupplierId 
WHERE t2.SupplierId IS NULL 

Answer 2

看來你需要取得平衡每個供應商

SELECT ISNULL(NetTable.SupID, RecTable.SupID) AS SupID, (ISNULL(NetTable.TotalNet,0) - ISNULL(RecTable.TotalRec,0)) AS BalAmt 
FROM (SELECT SupID, SUM(NetAmt) AS TotalNet FROM Table_1 GROUP BY SupID) AS NetTable 
LEFT OUTER JOIN 
(SELECT SupID, SUM(RecAmt) AS TotalRec FROM Table_2 GROUP BY SupID) AS RecTable 
ON NetTable.SupID = RecTable.SupID 
WHERE NetTable.TotalNet <> RecTable.TotalRec 

極品GROUP BY供應商的每個表單獨& JOIN摘要。