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Duration 14 hours
Course Outline
Relational Database Models
- Structure of a relational database
- Relational operators
Data Retrieval
- Best practices for writing SQL queries
- SELECT statement syntax
- Selecting all columns
- Performing arithmetic operations in queries
- Using column aliases
- Literals
- String concatenation
Filtering Results
- The WHERE clause
- Comparison operators
- LIKE conditions
- The BETWEEN ... AND condition
- IS NULL conditions
- IN conditions
- Logical operators
- Combining multiple conditions in the WHERE clause
- Operator precedence
- The DISTINCT clause
Sorting Data
- The ORDER BY clause
- Sorting by multiple columns or expressions
SQL Functions
- Differences between scalar and aggregate functions
- Text, numeric, and date functions
- Conversion functions
- Nesting functions
- Handling NULL values
Data Aggregation with Grouping Functions
- Overview of grouping functions
- How grouping functions handle NULL values
- Creating data groups using the GROUP BY clause
- Grouping by multiple columns
- Filtering group results with the HAVING clause
Retrieving Data from Multiple Tables
- Types of joins
- Using table aliases
- Specifying joins in the WHERE clause
- INNER JOIN
- Outer joins (LEFT, RIGHT)
- Cartesian products
Subqueries
- Embedding subqueries within SELECT commands
- 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 Modification: Insert, Update, and Delete
- INSERT statement
- UPDATE statement
- DELETE statement
Transactions
Requirements
- 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.
