Oracle has its own unique syntax for joins that differs from the ANSI SQL standard. Learn about the differences between Oracle joins and ANSI SQL joins syntax.
- [Instructor] Note that in addition to writing SQL joins,…using the standard SQL syntax,…also known as the ANSI syntax,…which we saw throughout this chapter,…Oracle also has it's own proprietary syntax…for performing joins on tables in the database.…The Oracle syntax is equivalent to…the ANSI standard SQL syntax.…However, for cross database compatibility,…most users choose to write SQL commands when using joins,…using the standard ANSI syntax.…
So let's see the Oracle-specific join syntax in action.…We can type: select first_name,…last_name,…department_name…and by now you probably understand…that I'm going to be joining the employees,…and departments table together,…as we have done throughout this chapter.…And here is where the change in syntax starts to occur.…So, using the Oracle join syntax, I'll type:…from employees,…departments.…
Note that I'm not specifying any join syntax…between these two tables, just a comma,…and I perform the actual join itself…in the where clause of my query.…So I type:…where employees.department_id =…
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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