The ability to combine results from related rows in different tables is a fundamental quality of a relational database.
- [Instructor] The ability to combine results … from related rows in different tables, … is an important part of using a relational database system. … In SQL, this is accomplished with the join clause. … For this lesson we're going to be using the test database … and I've pasted a bunch of SQL here … from the chapter 4 exercise file, … and what we're doing is we're creating … a couple of tables called left and right. … Each of them has an integer and a text column. … And they look like this. … We're inserting rows into them. … The left table will have integers one through nine, … and the strings left zero one through left zero nine. … The right table is a little different, … it will have integers six, seven, eight, nine, 10, … and then several with 11, … and the right and the text right zero six through right 14. … And so this just allows us to do some … interesting little joins to demonstrate the capabilities. … So I'm going to take all of these inserts … along with the creates, … and I'm going to execute that all at once. …
This course was created by Bill Weinman. We are pleased to offer this training in our library.
- How databases are organized
- Selecting rows and columns
- Creating new tables
- Inserting and updating data
- Sorting and filtering
- Accessing related tables with JOIN
- Working with strings
- Understanding numeric types
- Using aggregate functions and transactions
- Automating data with triggers
- Creating views
- Using CRUD functions
Skill Level Beginner
2. SQL Overview
3. Fundamental Concepts
7. Dates and Times
Dates and times2m 6s
11. Views and Subselects
12. A Simple CRUD Application
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