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Course Outline
Restricting Results
- The WHERE clause
- Comparison operators
- The LIKE condition
- The BETWEEN ... AND condition
- The IS NULL condition
- The IN condition
- Boolean operators: AND, OR, and NOT
- Various conditions within the WHERE clause
- Operator precedence
- The DISTINCT clause
SQL Functions
- Differences between single-row and multi-row functions
- Text, numeric, and date functions
- Explicit and implicit conversions
- Conversion functions
- Nesting functions
- Testing function performance using the DUAL table
- Obtaining the current date using SYSDATE
- Handling NULL values
Aggregating Data Using Grouping Functions
- Grouping functions overview
- How grouping functions handle NULL values
- Creating data groups with the GROUP BY clause
- Grouping by multiple columns
- Filtering grouped results with the HAVING clause
Subqueries
- Incorporating subqueries into the SELECT command
- Single-line and multi-line subqueries
- Operators used with single-line subqueries
- Applying grouping functions within subqueries
- Operators for multi-line subqueries: IN, ALL, and ANY
- Handling NULL values in subqueries
Set Operators
- UNION operator
- UNION ALL operator
- INTERSECT operator
- MINUS operator
Advanced Join Techniques
- Reviewing Joins
- Combining Inner and Outer Joins
- Partitioned Outer Joins
- Hierarchical Queries
Advanced Subquery Applications
- Reviewing subqueries
- Utilizing subqueries as virtual tables, inline views, and columns
- Using the WITH clause
- Combining subqueries with joins
Analytic Functions
- The OVER clause
- The PARTITION BY clause
- The 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 within the WHERE clause
- INNER JOIN
- Outer Joins: LEFT, RIGHT, and FULL
- Cartesian products
Aggregate Functions (If Time Permits)
- Reviewing GROUP BY and HAVING clauses
- GROUPING SETS and ROLLUP
- GROUPING SETS and CUBE
Requirements
It is recommended that attendees have previously 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
