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Question related to the "dot"usage in SQL

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Im currently following the SQL tutorial on w3schools and i got stuck in the Alias section about the usage of the "dot" in a query, after looking it on google i found that its something like a parent-child relation so that the DBMS know where to fetch the values from.

However i feel that this example in the tutorial is too verbose:

SELECT Orders.OrderID, Orders.OrderDate, Customers.CustomerName
FROM Customers, Orders
WHERE Customers.CustomerName="Around the Horn" AND Customers.CustomerID=Orders.CustomerID;


And can be easily translated to this other one

SELECT OrderID, OrderDate, CustomerName
FROM Customers, Orders
WHERE CustomerName="Around the Horn" AND Customers.CustomerID=Orders.CustomerID;


it retrieves the same data in the practice tool, so i want to know if im doing a good practice by removing this redundancy or not.

here is the link to the topic im talking about:  https://www.w3schools.com/sql/sql_alias.asp


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I believe it's been deliberately verbose to illustrate it. You won't find this level of explicit alias usage elsewhere in other tutorials.

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If you had two different tables with the same field names, the dot would be necessary for the query to run.

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