Today, We want to share with you left outer join.In this post we will show you sql subquery, hear for left outer join vs right outer join we will give you demo and example for implement.In this post, we will learn about MySQL LEFT Inner and outer where clause joins with an example.
SQL LEFT JOIN
There are the Following The simple About joins sql Full Information With Example and source code.
As I will cover this Post with live Working example to develop left join vs left outer join, so the sql update multiple columns is used for this example is following below.
What is a LEFT JOIN in SQL?
A LEFT JOIN performs a join starting with the first (left-most) table.
Then, any matched rows from the second table (right-most) will be included.
LEFT JOIN and LEFT OUTER JOIN are the same.
The SQL LEFT JOIN syntax
The general LEFT JOIN syntax is
SELECT datacolumns FROM dbtable-nm1 LEFT JOIN dbtable-nm2 ON datacolumn1 = datacolumn2 WHERE condition
The general LEFT OUTER JOIN syntax is
SELECT datacolumns FROM dbtable-nm1 LEFT OUTER JOIN dbtable-nm2 ON datacolumn1 = datacolumn2 WHERE condition
SQL LEFT JOIN Example
SQL Query Question: List all members and the total amount they spent irrespective whether they placed any Transactions or not.
SELECT TransactionNumber, FullTotalPrice, MemberName, ProfileName, Address, Country FROM Member C LEFT JOIN [Transaction] O ON O.MemberId = C.Id ORDER BY FullTotalPrice
Note: The ORDER BY FullTotalPrice shows the members without Transactions first (i.e. TotalMount is NULL).
I hope you get an idea about left outer join.
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