Exam 70-761: Query data with advanced Transact-SQL Component

Unlock powerful data manipulation skills with this comprehensive course! Learn to efficiently retrieve and transform data using advanced SQL techniques.

• Mastering Subqueries & APPLY: Dive deep into querying data with nested queries. Explore different types of subqueries, including:

  • Introduction to Subqueries: Understand the fundamentals of using queries within queries.
  • Self-Contained Subqueries: Learn to write independent subqueries.
  • Co-related Subqueries: Discover how to use subqueries that depend on the outer query.
  • Using EXISTS Predicate: Efficiently check for the existence of data with EXISTS.
  • Leveraging APPLY: Utilize the APPLY operator for flexible and powerful data retrieval.

• Table Expressions for Data Transformation: Gain proficiency in using table expressions to reshape your data:

  • Derived Tables: Create temporary, named result sets within your queries.
  • CTEs (Common Table Expressions): Write more readable and maintainable queries with CTEs.
  • Views: Define virtual tables based on query results for simplified access.
  • TVFs (Table Valued Functions): Create functions that return tables for dynamic data manipulation.

• Advanced Data Grouping & Pivoting: Transform your data for insightful analysis:

  • Grouping Sets: Aggregate data based on specified columns.
  • Cubes & Rollup: Perform multi-dimensional data aggregation.
  • Handling NULLs: Learn techniques for managing and distinguishing NULL values in your results.
  • Introduction to Window Functions: Unlock advanced analytical capabilities.
  • Window Aggregate Functions: Calculate aggregate values over a set of rows.
  • Window Ranking Functions: Rank rows within partitions of your data.
  • Window Offset Functions: Access specific rows within a ranked result set.
  • Window Pivot/Unpivot Functions: Transform data between row and column formats.

• Data Integrity with Constraints: Ensure data quality and consistency:

  • Types of Constraints: Understand the different types of constraints available in SQL.
  • Unique Constraints: Enforce uniqueness for specific columns.
  • Not NULL Constraints: Prevent NULL values in required columns.

This course provides practical knowledge to enhance your SQL skills and effectively manage and analyze data.