填補日期範圍的空白 - SQL

Question

我有一個問題在下面提到，不能做到沒有SQL，因爲我有200萬行。

我有一個表Table1其中我有物品/祿提供給定日期範圍的促銷價格。此外，我還有一個表Table 2在那裏我有基準價從2015年的每個項目/ LOC - 2017年，我必須用填寫表1給出

表1差距：

+-----------------------------------------------------------+ 
| Item | Location | Startdate | EndDate | Promoted Price | 
+-------+----------+-----------+-----------+----------------+ 
| Item1 | Loc1  | 6/23/2015 | 6/24/2015 | 22    | 
| Item1 | Loc1  | 7/10/2015 | 7/17/2015 | 30    | 
| Item1 | Loc1  | 7/24/2015 | 7/31/2015 | 30    | 
| Item2 | Loc2  | 6/21/2015 | 8/7/2015 | 25    | 
| Item2 | Loc2  | 8/28/2015 | 9/4/2015 | 27    | 
| Item2 | Loc2  | 9/11/2015 | 9/18/2015 | 28    | 
+-------+----------+-----------+-----------+----------------+ 

表2

+--------------------------------------------------------+ 
| Item | Location | Startdate | EndDate | Full_Price | 
+-------+----------+-----------+------------+------------+ 
| Item1 | Loc1  | 1/1/2015 | 12/31/2017 | 32   | 
| Item2 | Loc2  | 1/1/2015 | 12/31/2017 | 24   | 
| Item3 | Loc3  | 1/1/2015 | 12/31/2017 | 54   | 
| Item4 | Loc4  | 1/1/2015 | 12/31/2017 | 67   | 
| Item5 | Loc5  | 1/1/2015 | 12/31/2017 | 39   | 
| Item6 | Loc6  | 1/1/2015 | 12/31/2017 | 48   | 
| Item7 | Loc7  | 1/1/2015 | 12/31/2017 | 63   | 
| Item8 | Loc8  | 1/1/2015 | 12/31/2017 | 52   | 
| Item9 | Loc9  | 1/1/2015 | 12/31/2017 | 51   | 
+-------+----------+-----------+------------+------------+ 

結果應該是這樣的：

| Item | Location | Startdate | EndDate | Promoted Price | 
+-------+----------+-----------+-----------+----------------+ 
| Item1 | Loc1 | 6/23/2015 | 6/24/2015 | 22    | 
| Item1 | Loc1 | 6/25/2015 | 7/9/2015 | 32    | 
| Item1 | Loc1 | 7/10/2015 | 7/17/2015 | 30    | 
| Item1 | Loc1  | 7/18/2015 | 7/23/2015 | 32    | 
| Item1 | Loc1  | 7/24/2015 | 7/31/2015 | 30    | 

Answer 1

有什麼差距？它看起來像你過濾「Item1」和「Loc1」

Answer 2

謝謝大家。我能夠通過使用Lead（）函數來解決此問題。