SQL Server Level III

Expand your SQL expertise in this comprehensive advanced course that enables you to execute sophisticated database operations and complex data manipulation tasks. Through practical, project-based learning, you will develop the capability to work effectively with Microsoft SQL Server, mastering techniques that professional data professionals use daily.

This course explores conditional query logic through CASE expressions, text extraction and manipulation using string functions, multi-level query construction with subqueries enabling data retrieval from any database location, view-based querying when standard table permissions restrict access, and custom functions and stored procedures that enhance code modularity and reusability. Upon successful completion, you will be well-positioned for roles in data analysis, data science, database administration, and any position requiring expert SQL skills for relational database manipulation.

Required Prerequisites:

SQL competency equivalent to SQL Level 2 is essential. This includes proficiency with join operations and join types; aggregate functions including SUM, COUNT, AVG, and other aggregations; GROUP BY and HAVING clauses for result grouping and filtering; and type conversion using CAST and date/time data handling.

Key Learning Outcomes:

• Construct subqueries to retrieve data from multiple levels of your database and use those results within parent queries
• Query from view objects rather than base tables, particularly useful when database permission restrictions apply
• Implement conditional logic within queries using CASE statements for dynamic result processing
• Design user-defined functions and invoke stored procedures to create reusable, maintainable SQL code
• Master string functions for extracting, transforming, and formatting text data stored in database fields

Detailed Course Curriculum:

• Advanced Query Methodology and Techniques
• Subquery construction and nested query execution strategies
• Aggregate functions with window-based calculations for analytical operations
• Conditional query logic using CASE expressions and nested conditions
• Text and string manipulation functions for sophisticated data extraction and transformation
• Self-join patterns for within-table comparisons and hierarchical data analysis
• Views, User-Defined Functions, and Stored Procedures
• View creation and querying for data abstraction and security
• User-defined function design with parameter passing for flexible, dynamic calculations
• Stored procedure development and execution with parameter handling

Discover more information about SQL Server Level III through NYIM Training.