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Course Outline
Relational database models
- The structure of a relational database
- Relational operators
Retrieving data
- Rules for writing SQL queries
- Syntax of the SELECT statement
- Selecting all columns
- Queries involving arithmetic operations
- Column aliases
- Literals
- Concatenation
Restricting results
- The WHERE clause
- Comparison operators
- The LIKE condition
- The BETWEEN ... AND condition
- The IS NULL condition
- The IN condition
- Logical operators
- Multiple conditions within the WHERE clause
- Operator precedence
- The DISTINCT clause
Sorting data
- The ORDER BY clause
- Sorting by multiple columns or expressions
SQL functions
- Differences between single-row and multi-row functions
- Text, numeric, and date functions
- Conversion functions
- Nesting functions
- Handling NULL values
Aggregating data using grouping functions
- Grouping functions
- How grouping functions handle NULL values
- Creating data groups – the GROUP BY clause
- Grouping by multiple columns
- Filtering grouped results – the HAVING clause
Retrieving data from multiple tables
- Types of joins
- Table aliases
- Joins within the WHERE clause
- INNER JOIN
- Outer joins: LEFT and RIGHT
- Cartesian product
Subqueries
- Embedding subqueries in the SELECT statement
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Operators for multi-row subqueries: IN, ALL, ANY
Set operators
- UNION operator
- INTERSECT operator
- EXCEPT operator
Inserting, updating, and deleting data
- INSERT command
- UPDATE command
- DELETE command
Transactions
Requirements
- Computer literacy
- Familiarity with any operating system
14 Hours
Testimonials (3)
It was very interactive and it kept us interested.
Raluca Alexandra PUNGA
Course - SQL Fundamentals
Small group, in-person for 3 days,
Annina - Ricardo AG
Course - SQL: Basics to Intermediate
I liked the pace of the training and the level of interaction. All participants were encouraged to actively partake in discussions around exercise solutions, etc.
