Learn about the function of FULL JOINS in SQL and how to perform them.
- [Instructor] In addition to using right join and left join…in your sequel querries.…Which, by the way, are also known as right outer joins…or left outer join, it's the same thing.…We can also choose to execute a full outer join.…A full outer join basically returns all records…where there is a match in either the left or the right table…So in our case, any matching records…between employees and departments.…It's a combination of a right join and a left join…at the same time.…
In oracle, you can execute a full outer join…by specifying the full join syntax…as part of the front clause of your sequel command.…So lets see full outer joins in action.…We can use the same example from our previous exercise,…simply changing right join to full join.…So our query now reads select…and the column names we want to return…from employees full join departments on…employees.department_id = departments.departnment_id.…
Lets execute this query, which is again essentially…a combination of a right join and a left join…at the same time.…
Note: This training course is appropriate for beginning database developers with no prior experience with SQL or Oracle.
- Using Oracle SQL*Developer, the free development environment
- Selecting data from tables
- Filtering data
- Using functions to manipulate data
- Joining data from tables
- Creating tables
- Updating values
- Truncating data
- Grouping and ordering result sets
- Working with primary keys
- Checking constraints
Skill Level Beginner
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1. Introduction to SQL
2. Preparing the Course Environment
Downloading the course VM2m 16s
3. Using Oracle SQL Developer
4. Basic SELECT Queries
5. String, Number, and Date Functions
6. Joining Table Data
7. Manipulating Data
8. Grouping Data
9. Advanced Topics
Next steps1m 33s
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