如何使用SQL Server使用左連接顯示左表中的所有記錄？

Question

其實我得到了我的輸出，但它部分。

在我的左表我有所有的記錄，但是當我在右表中做過濾它不是從左表中把所有的記錄

Answer 1

我覺得左加入到家店是你是什麼尋找：

from 
    ItemDynamic dynamics 
    inner join Store WITH(NOLOCK) on dynamics.StoreID = Store.ID and store.Inactive = 0 
    LEFT JOIN Item WITH(NOLOCK) on dynamics.ItemID = Item.ID and Item.ParentItem = 0 
    LEFT JOIN Sales idsp WITH(NOLOCK) on idsp.ItemID = Item.ID and Item.ParentItem = 0 and idsp.StoreID = dynamics.StoreID 
    and idsp.Time between '2017-07-16' and '2017-07-31' and idsp.StoreID <> 1001 and Item.ParentItem = 0 and Item.ItemType <> 9 
    LEFT JOIN Department WITH(NOLOCK) on Department.ID = Item.DepartmentID 
    LEFT JOIN Category WITH(NOLOCK) on Category.ID = item.CategoryID 
    LEFT JOIN Supplier WITH(NOLOCK) on Supplier.ID = item.SupplierID 
Where 
    item.ItemLookupCode = '100006C0005' and 
-- idsp.Time between '2017-07-16' and '2017-07-31' and idsp.StoreID <> 1001 and Item.ParentItem = 0 and Item.ItemType <> 9 

您可能需要添加在where子句

Answer 2

obviusly它doesen't顯示左數據，因爲在左連接狀況和評論WHERE clausule排除他們

您可以將一個或idsp.Time == 0添加到您的左側右側使用WHERE

Where 
item.ItemLookupCode = '100006C0005' and 
(idsp.Time between '2017-07-16' and '2017-07-31' and idsp.StoreID <> 1001 and Item.ParentItem = 0 and Item.ItemType <> 9) OR idsp.Time IS NULL 

Answer 3

表連接，你不應該把在WHERE子句，因爲這有效將LEFT JOIN變成INNER。

移動你的條件JOIN子句本身：

LEFT JOIN Item ON dynamics.ItemID = Item.ID 
    AND item.ItemLookupCode = '100006C0005' 
    AND Item.ParentItem = 0 
    AND Item.ItemType <> 9 
LEFT JOIN Sales idsp ON idsp.ItemID = Item.ID 
    AND idsp.StoreID = dynamics.StoreID 
    AND idsp.Time between '2017-07-16' and '2017-07-31' 
    AND idsp.StoreID <> 1001 

Answer 4

添加WHERE條件您的加盟：

LEFT JOIN Sales idsp WITH(NOLOCK) 
     ON idsp.ItemID = Item.ID 
     AND Item.ParentItem = 0 
     AND idsp.StoreID = dynamics.StoreID 
     AND idsp.Time between '2017-07-16' and '2017-07-31' 
     AND idsp.StoreID <> 1001 

從你的WHERE

Answer 5

try with following code 

remove your where clause and put those conditions with your joins 




select 
    dynamics.ItemID, 
    item.ItemLookupCode, 
    dynamics.StoreID, 
    Department.Name Department, 
    Category.Name Category, 
    Supplier.Code, 
    Supplier.SupplierName, 
    sum(idsp.Qty) SoldQty, 
    sum(idsp.ExtendedCost) SoldExtCost, 
    sum(idsp.ExtendedPrice) SoldExtPrice, 
    dynamics.RestockLevel, 
    CASE WHEN isNull(sum(idsp.Qty),0) > (dynamics.RestockLevel * 0.75) THEN 'Fast Moving' 
    WHEN isNull(sum(idsp.Qty),0) > (dynamics.RestockLevel * 0.25) THEN 'Average Moving' 
    WHEN isNull(sum(idsp.Qty),0) > 0 THEN 'Slow Moving' 
    WHEN isNull(sum(idsp.Qty),0) = 0 THEN 'No Moving' END AS Moving 
from 
    ItemDynamic dynamics 
    inner join Store WITH(NOLOCK) on dynamics.StoreID = Store.ID and store.Inactive = 0 
    LEFT JOIN Item WITH(NOLOCK) on dynamics.ItemID = Item.ID and Item.ParentItem = 0 and item.ItemLookupCode = '100006C0005' 
    LEFT JOIN Sales idsp WITH(NOLOCK) on idsp.ItemID = Item.ID and Item.ParentItem = 0 and idsp.StoreID = dynamics.StoreID and idsp.Time between '2017-07-16' and '2017-07-31' and idsp.StoreID <> 1001 and Item.ParentItem = 0 and Item.ItemType <> 9 
    LEFT JOIN Department WITH(NOLOCK) on Department.ID = Item.DepartmentID 
    LEFT JOIN Category WITH(NOLOCK) on Category.ID = item.CategoryID 
    LEFT JOIN Supplier WITH(NOLOCK) on Supplier.ID = item.SupplierID 


Group By 
    dynamics.ItemID, 
    item.ItemLookupCode, 
    dynamics.StoreID, 
    dynamics.RestockLevel, 
    Department.Name, 
    Category.Name, 
    Supplier.Code, 
    Supplier.SupplierName 
order by 
    item.ItemLookupCode