Querying Data with Microsoft Transact-SQL

After completing this course, students will be able to:

• Understand the basic concepts of relational database and the T-SQL language
• Write SELECT statements to retrieve data from a relational database table
• Understand basic datatypes and how they are used
• Understand the basics of NULL values
• Use ORDER BY to sort results from a T-SQL SELECT statement
• Add a TOP clause to limit the ordered rows returned
• Page the sorted data with OFFSET-FET
• Write WHERE clauses to filter the rows returned
• Use DISTINCT to eliminate duplicate rows in the results
• Write queries accessing data from multiple tables using JOIN operations
• Understand the differences between type of JOIN operations: INNER JOIN, OUTER JOIN, CROSS JOIN
• Understand how to join a table to itself with a self-join
• Write subqueries within a SELECT statement
• Understand the difference between scalar and multi-valued subqueries
• Understand the difference between correlated and self-contained subqueries
• Write queries using scalar functions
• Write queries using aggregate functions
• Use GROUP BY to combine data into groups based on a common column value
• Understand how HAVING is used to filter groups of rows
• Insert data into an existing table
• Specify that a column should be automatically populating with an IDENTITY or a SEQUENCE value
• Modify data using the UPDATE statement
• Delete data using the DELETE statement
• Modify data using MERGE to synchronize two tables

This course can be valuable for anyone who needs to write basic SQL or Transact-SQL queries. This includes anyone working with data as a data analyst, a data engineer, a data scientist, a database administrator or a database developer. It can also be useful for others peripherally involved with data, or wanting to learn more about working with data such as solution architects, students and technology managers.
 

After completing this course, students will be able to:
• Use SQL Server query tools
• Write SELECT statements to retrieve columns from one or more tables
• Sort and filter selected data
• Use built-in functions to returned data values
• Create groups of data and aggregate the results
• Modify data with Transact-SQL using INSERT, UPDATE, DELETE and MERGE

Get Started with Transact-SQL Introduction to Transact-SQL

• Introduction
• Work with schemas
• Explore the structure of SQL statements
• Examine the SELECT statement
• Work with data type
• Handle NULLs
• Exercise - Work with SELECT statements
• Knowledge check

Sort and filter results in T-SQL

• Introduction
• Sort your results
• Limit the sorted results
• Page results
• Remove duplicates
• Filter data with predicates
• Exercise - Sort and filter query results
• Knowledge check

Combine multiple tables with JOINs in T-SQL

• Introduction
• Understand joins concepts and syntax
• Use inner joins
• Use outer joins
• Use cross joins
• Use self joins
• Exercise - Query multiple tables with joins
• Knowledge check

Write Subqueries in T-SQL

• Introduction
• Understand subqueries
• Use scalar or multi-valued subqueries
• Use self-contained or correlated subqueries
• Exercise - Use subqueries
• Knowledge check

Use built-in functions and GROUP BY in Transact-SQL

• Introduction
• Categorize built-in functions
• Use scalar functions
• Use ranking and rowset functions
• Use aggregate functions
• Summarize data with GROUP BY
• Filter groups with HAVING
• Exercise - Use built-in functions
• Knowledge check