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Course Outline
Relational database models
- The structure of a relational database
- Relational operators
Retrieving data
- Rules for writing SQL queries
- The syntax for the SELECT statement
- Selecting all columns
- Queries from arithmetic operations
- Column aliases
- Literals
- Concatenation
Restricting results
- The WHERE clause
- Comparison operators
- LIKE condition
- BETWEEN ... AND condition
- IS NULL condition
- IN condition
- Logical operators
- Complex conditions in the WHERE clause
- Operator precedence
- 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 treat NULL values
- Create groups of data - the GROUP BY clause
- Grouping multiple columns
- Filtering grouped function results - the HAVING clause
Retrieving data from multiple tables
- Types of joins
- Table aliases
- Joins in the WHERE clause
- INNER JOIN
- Outer joins: LEFT and RIGHT
- Cartesian product
Subqueries
- Placing subqueries in the SELECT command
- 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
- Knowledge of any operating system
14 Hours
Testimonials (3)
personalised to our understanding and data
Vincent Long - ASSMANG PTY LTD
Course - Business Intelligence with SSAS
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.
