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Course Outline
Relational Database Models
- Structure of a relational database
- Relational operators
Data Retrieval
- Rules for writing SQL queries
- Syntax for the SELECT statement
- Selecting all columns
- Queries involving arithmetic operations
- Column aliases
- Literals
- String concatenation
Filtering Results
- The WHERE clause
- Comparison operators
- LIKE condition
- BETWEEN ... AND operator
- IS NULL condition
- IN condition
- Logical operators
- Combining multiple 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
- Function nesting
- Handling NULL values
Aggregating Data with Grouping
- Grouping functions
- How grouping functions handle NULL values
- Creating data groups - the GROUP BY clause
- Grouping by multiple columns
- Reducing grouped results - the HAVING clause
Retrieving Data from Multiple Tables
- Types of joins
- Table aliases
- Joins in the WHERE clause
- INNER JOIN
- OUTER JOIN (LEFT, RIGHT)
- Cartesian product
Subqueries
- Placing subqueries within the SELECT command
- Single-line and multi-line subqueries
- Operators for single-line subqueries
- Operators for multi-line 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
- Basic computer proficiency
- Familiarity with 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.
