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Duration 14 hours
Course Outline
Relational database models
- The architecture of a relational database
- Application of relational operators
Data retrieval
- Best practices for authoring SQL queries
- SELECT statement syntax
- Retrieving all columns
- Queries involving arithmetic operations
- Column aliases
- Use of literals
- String concatenation
Filtering results
- The WHERE clause
- Comparison operators
- The LIKE condition
- Using BETWEEN ... AND
- The IS NULL condition
- The IN condition
- Logical operators
- Combining multiple conditions in the WHERE clause
- Operator precedence
- The DISTINCT clause
Data sorting
- The ORDER BY clause
- Sorting by multiple columns or expressions
SQL Functions
- Distinguishing between single-row and multi-row functions
- Text, numeric, and date functions
- Conversion functions
- Function nesting
- Managing NULL values
Aggregating data with grouping functions
- Overview of grouping functions
- Treatment of NULL values in grouping functions
- Creating data groups with the GROUP BY clause
- Grouping by multiple columns
- Filtering aggregated results with the HAVING clause
Retrieving data from multiple tables
- Categories of joins
- Table aliases
- Defining joins within the WHERE clause
- INNER JOIN
- External joins (LEFT, RIGHT)
- The Cartesian product
Subqueries
- Embedding subqueries in the SELECT command
- Scalar and non-scalar 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 statement
- UPDATE statement
- DELETE statement
Transactions
Requirements
- Basic computer literacy
- Familiarity with any 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.
