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LinkedIn Learning

Querying Microsoft SQL Server 2019

via LinkedIn Learning


Learn how to retrieve information stored in a Microsoft SQL Server database using the Transact-SQL (T-SQL) language.

Discover how to query data from SQL Server tables. In this course, Adam Wilbert covers how to retrieve information stored in a Microsoft SQL Server database using the Transact-SQL (T-SQL) language. Learn the fundamental structure of a query and see how to manipulate data through the use of built-in functions, operators, filters, and other language features to return a dataset that's formatted to meet a wide variety of needs and perspectives. Upon wrapping up this course, you'll be equipped with the commands and keywords you need to know to effectively analyze your data.


  • Turn data into information with queries
  • What you should know
  • Download the sample database
1. Introduction to T-SQL Queries
  • What is Transact SQL?
  • The SQL querying environment
  • Return records with SELECT and FROM
  • Filter records with WHERE
  • Sort records with ORDER BY
  • Column aliases
  • Create values with constants
2. Additional Filter Techniques
  • Limit results with TOP
  • Remove duplicates with DISTINCT
  • Comparison operators
  • Understand NULL values
  • Match text with LIKE and wildcards
3. Retrieve Records from Multiple Tables
  • Table joins and relationships
  • Inner joins
  • Left, right, and full outer joins
  • Cross joins
4. Grouping Records
  • Understand record grouping
  • Use GROUP BY and COUNT
  • Aggregate functions
  • Explore data with SUM
  • Filter groups with HAVING
5. Manipulate Data with Functions
  • Use functions in T-SQL
  • String functions
  • Text concatenation
  • Round with mathematical functions
  • Work with date functions
  • FORMAT date and times
  • Return random records with NEWID
  • The IIF logical function
6. Writing SQL Scripts
  • Change database context with USE
  • Add comments to a script
  • When to use square brackets
7. SQL Subqueries
  • What is a subquery?
  • Use a subquery in a WHERE clause
  • Correlated subqueries
  • PIVOT the result set
8. Work with Variables
  • Create and use variables in a query
  • Create a counter for a looping statement
9. Result Set Operators
  • Combine results with UNION
  • Return distinct rows with EXCEPT
  • Return common rows with INTERSECT
  • Next steps

Taught by

Adam Wilbert

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