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Course Outline
Limiting Results
- The WHERE clause
- Comparison operators
- LIKE condition
- BETWEEN ... AND operator
- IS NULL condition
- IN condition
- Boolean operators: AND, OR, and NOT
- Common conditions used in 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 conversion
- Conversion functions
- Function nesting
- Testing function performance using the DUAL table
- Retrieving the current date using SYSDATE
- Handling NULL values
Aggregating Data Using Group Functions
- Group functions
- How group functions handle NULL values
- Creating data groups with the GROUP BY clause
- Grouping by multiple columns
- Filtering group results with the HAVING clause
Subqueries
- Placing subqueries within the SELECT statement
- Single-row and multi-row subqueries
- Operators for single-row subqueries
- Using group functions in subqueries
- Operators for multi-row subqueries: IN, ALL, ANY
- Handling 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 in column expressions
- Using 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
- LEFT, RIGHT, and FULL OUTER JOINs
- Cartesian products
Aggregate Functions (if time permits)
- Review of GROUP BY and HAVING clauses
- GROUPING SETS and ROLLUP
- GROUPING SETS and CUBE
Requirements
Prior attendance at 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
