Training: Querying Data with Microsoft Transact-SQL

Master Querying Data with Microsoft Transact-SQL (DP-080)

The Querying Data with Microsoft Transact-SQL (DP-080) course is designed to provide you with the skills needed to use Transact-SQL, Microsoft’s SQL dialect. Learn to query and modify data in relational databases hosted on Microsoft SQL Server, Azure SQL Database, and Azure Synapse Analytics. Discover the fundamentals of T-SQL and become an expert in database management.

What is Querying Data with Transact-SQL?

Querying data with Transact-SQL involves using T-SQL commands to extract specific information from relational databases. By using statements like SELECT, you can filter, sort, and display data efficiently. This training will guide you through various techniques to optimize your queries and achieve desired results.

Introduction to Transact-SQL

The first module of this course covers the basics of Transact-SQL. You will learn to understand the utility of SQL, identify database objects in schemas, and use SQL statements such as SELECT. You will also discover how to work with different data types and handle NULL values.

Sorting and Filtering Results in T-SQL

In the second module, you will learn to sort and filter your results to optimize your queries. You will understand how to limit sorted results, return paginated results, remove duplicates, and use predicates to filter data effectively.

Combining Multiple Tables with JOINS in T-SQL

The third module focuses on joins, a crucial concept in SQL. You will learn to describe the concepts and syntax of joins, write queries using inner and outer joins, as well as cross joins and self joins.

Writing Subqueries in T-SQL

In this module, you will understand what subqueries are and how to use them to make your queries more powerful. You will learn to use scalar or multi-valued subqueries, as well as standalone or correlated subqueries.

Using Built-in Functions and GROUP BY in Transact-SQL

This module will teach you how to use T-SQL built-in functions to perform complex operations on your data. You will learn to categorize built-in functions, use scalar functions, ranking, window functions, and aggregate functions. You will also discover how to summarize data with GROUP BY and filter groups with HAVING.

Modifying Data with T-SQL

The final module focuses on modifying data. You will learn to insert data into a table, generate automatic values, update and delete data, as well as merge data based on multiple tables.

Frequently Asked Questions:

How is T-SQL different from SQL?

Transact-SQL (T-SQL) is an extension of SQL (Structured Query Language) developed by Microsoft. It adds additional features such as stored procedures, transactions, error handling, and variables, allowing for greater flexibility and efficiency in database management.

How do I perform queries in Microsoft SQL Server?

To perform queries in Microsoft SQL Server, you use Transact-SQL. Basic commands include SELECT to query data, INSERT to add data, UPDATE to modify existing data, and DELETE to delete data. This course will guide you through using these commands and much more.

Is Transact-SQL still used?

Yes, Transact-SQL is still widely used in the field of database management. It is essential for administering and querying databases on Microsoft platforms such as SQL Server, Azure SQL Database, and Azure Synapse Analytics. Mastering T-SQL is a valuable skill for any professional working with relational databases.