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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
- Various conditions within the WHERE clause
- Operator precedence
- DISTINCT clause
SQL Functions
- Differences between single-line and multi-line functions
- Text, numeric, and date functions
- Explicit and implicit conversion
- Conversion functions
- Function nesting
- Testing function performance using the DUAL table
- SYSDATE function for retrieving the current date
- Handling NULL values
Aggregating Data Using Grouping Functions
- Grouping functions
- How grouping functions handle NULL values
- Creating data groups using the GROUP BY clause
- Grouping by multiple columns
- Limiting grouped function results using the HAVING clause
Subqueries
- Incorporating subqueries in the SELECT command
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Grouping features within subqueries
- Operators for multi-row subqueries: IN, ALL, ANY
- Treatment of NULL values in subqueries
Set Operators
- UNION operator
- UNION ALL operator
- INTERSECT operator
- MINUS operator
Advanced Usage of Joins
- Review of Joins
- Combining Inner and Outer Joins
- Partitioned Outer Joins
- Hierarchical Queries
Advanced Usage of Subqueries
- Review of subqueries
- Using subqueries as virtual tables, inline views, and columns
- Utilizing the WITH clause
- Combining subqueries and joins
Analytic Functions
- OVER clause
- PARTITION BY clause
- Windowing clause
- RANK, LEAD, LAG, FIRST, 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
- Outer joins: LEFT, RIGHT, FULL OUTER JOIN
- Cartesian product
Aggregate Functions (if time permits)
- Review of GROUP BY and HAVING clauses
- GROUPING SETS and ROLLUP
- GROUPING SETS and CUBE
Requirements
It is recommended that attendees have completed the "Oracle SQL for Beginners" training course.
14 Hours
Testimonials (3)
Greg was very patient and helpful
Chris Havel - Encyclopaedia Britannica
Course - ORACLE SQL Fundamentals
presentation skills, prompt answers to all questions
Oana - OPEN COURSE
Course - Oracle SQL LP - Fundamentals
I found his methods very informative
