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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-row and multi-row functions
- Text, 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 SYSDATE
- Handling NULL values
Aggregating Data Using Grouping Functions
- Grouping functions
- How grouping functions handle NULL values
- Creating data groups - the GROUP BY clause
- Grouping by multiple columns
- Filtering grouped results - the HAVING clause
Subqueries
- Placing subqueries in the SELECT statement
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Applying grouping functions 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 with joins
Analytic Functions
- OVER clause
- PARTITION BY clause
- Windowing clause
- 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
- Outer Joins: LEFT, RIGHT, and 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
Completion of the "Oracle SQL for Beginners" training course is recommended.
14 Hours
Testimonials (2)
Greg was very patient and helpful
Chris Havel - Encyclopaedia Britannica
Course - ORACLE SQL Fundamentals
I found his methods very informative
