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Course Outline
Limiting Results
- The WHERE clause
- Comparison operators
- LIKE Condition
- BETWEEN ... AND condition
- IS NULL condition
- IN condition
- Boolean operators: AND, OR, and NOT
- Combining multiple conditions in the WHERE clause
- Operator precedence
- DISTINCT clause
SQL Functions
- Differences between single-row and multi-row functions
- Character, numeric, and date functions
- Explicit and implicit data conversion
- Conversion functions
- Function nesting
- Testing function performance using the DUAL table
- Retrieving the current date with the SYSDATE function
- Managing NULL values
Aggregating Data 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 grouped results using the HAVING clause
Subqueries
- Embedding subqueries within the SELECT command
- Single-line versus multi-line subqueries
- Operators for single-line subqueries
- Utilizing grouping functions within subqueries
- Operators for multi-line subqueries: IN, ALL, ANY
- Handling NULL values in subqueries
Set Operators
- UNION operator
- UNION ALL operator
- INTERSECT operator
- MINUS operator
Advanced Joins
- Review of joins
- Combining Inner and Outer Joins
- Partitioned Outer Joins
- Hierarchical Queries
Advanced Subqueries
- Review of subqueries
- Using subqueries as virtual tables/inline views and in column definitions
- Using the WITH clause
- Combining subqueries with joins
Analytic Functions
- OVER clause
- PARTITION BY clause
- Windowing clauses
- Rank, Lead, Lag, First, and Last functions
Retrieving Data from Multiple Tables (if time permits)
- Types of joins
- Using NATURAL JOIN
- Table aliases
- Joins in the WHERE clause
- INNER JOIN
- Left, Right, and Full Outer Joins
- Cartesian product
Aggregate Functions (if time permits)
- Review of GROUP BY and HAVING clauses
- GROUP BY with ROLLUP
- GROUP BY with CUBE
Requirements
It is recommended that attendees have completed the "Oracle SQL for Beginners" training course.
14 Hours
Testimonials (2)
Greg was very patient and helpful
Chris Havel - Encyclopaedia Britannica
Course - ORACLE SQL Fundamentals
I found his methods very informative
