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Duration 14 hours
Course Outline
Relational database models
- Architecture of relational databases
- Relational operators
Retrieving data
- Best practices for constructing SQL queries
- SELECT statement syntax
- Retrieving all columns
- Executing arithmetic operations in queries
- Using column aliases
- Literals
- String concatenation
Filtering results
- The WHERE clause
- Comparison operators
- The LIKE condition
- The BETWEEN ... AND condition
- The IS NULL condition
- The IN condition
- Logical operators
- Combining 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 with grouping functions
- Overview of grouping functions
- Behavior of grouping functions with NULL values
- Creating data groups using the GROUP BY clause
- Grouping by multiple columns
- Filtering aggregated results with the HAVING clause
Retrieving data from multiple tables
- Types of joins
- Using table aliases
- Performing joins within the WHERE clause
- INNER JOIN
- External merges (LEFT, RIGHT)
- Cartesian product
Subqueries
- Incorporating subqueries into 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
Data manipulation: Insert, update, and delete
- INSERT statement
- UPDATE statement
- DELETE statement
Transactions
Requirements
- Basic computer proficiency
- Familiarity with a standard operating system
Testimonials (3)
Need more self-learning and exercise to improve my skill
Alvin Wilta - PT LENTERA DANA NUSANTARA
Course - SQL Intermediate
personalised to our understanding and data
Vincent Long - ASSMANG PTY LTD
Course - Business Intelligence with SSAS
It was very interactive and it kept us interested.
