Solution:Step 1: Understand the requirementThe query must include all items from Inventory and all orders, even if there is no match.Step 2: Choose the correct joinFULL OUTER JOIN returns all rows from both tables, matching where possible.Step 3: Verify syntax and columnsSELECT Inventory.ItemID, Ite

[Solved] Given these tables:Inventory:ItemID | ItemName1 | Notebook2 | Marker3 | StaplerOrders:ItemID | Quantity2 | 303 | 154 | 5Which query using FULL OUTER JOIN will list all items and their ordered... | SQL

SQL - Advanced Joins

ASELECT Inventory.ItemID, ItemName, Quantity FROM Inventory INNER JOIN Orders ON Inventory.ItemID = Orders.ItemID;

BSELECT Inventory.ItemID, ItemName, Quantity FROM Inventory FULL OUTER JOIN Orders ON Inventory.ItemID = Orders.ItemID;

CSELECT ItemID, ItemName, Quantity FROM Inventory LEFT JOIN Orders ON Inventory.ItemID = Orders.ItemID;

DSELECT ItemID, ItemName, Quantity FROM Orders RIGHT JOIN Inventory ON Orders.ItemID = Inventory.ItemID;

Step-by-Step Solution

Solution:

Step 1: Understand the requirement
The query must include all items from Inventory and all orders, even if there is no match.
Step 2: Choose the correct join
FULL OUTER JOIN returns all rows from both tables, matching where possible.
Step 3: Verify syntax and columns
SELECT Inventory.ItemID, ItemName, Quantity FROM Inventory FULL OUTER JOIN Orders ON Inventory.ItemID = Orders.ItemID; correctly uses FULL OUTER JOIN and selects the relevant columns.
Final Answer:
SELECT Inventory.ItemID, ItemName, Quantity FROM Inventory FULL OUTER JOIN Orders ON Inventory.ItemID = Orders.ItemID; -> Option B
Quick Check:
FULL OUTER JOIN includes unmatched rows from both tables [OK]

Quick Trick: Use FULL OUTER JOIN to include all rows from both tables [OK]

Common Mistakes:

MISTAKES

Using INNER JOIN which excludes unmatched rows
Using LEFT or RIGHT JOIN which excludes unmatched rows from one table
Selecting columns without table prefixes causing ambiguity

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Given these tables:

Step 1: Understand the requirement

Step 2: Choose the correct join

Step 3: Verify syntax and columns

Final Answer:

Quick Check:

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