55366 Querying Data with Transact-SQL

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Course Information

Need Group Training

Course Description

How many bad business decisions could be avoided if your data was accurate, timely, and easy to query? Nearly 82% of organizations admit to basing decisions on out-of-date data, leading to costly mistakes. The Querying Data with Transact-SQL training course builds the skills you need to work confidently with Microsoft SQL Server.

Through hands-on, instructor-led training, you’ll learn to query single and multiple tables, filter and sort results, join related data, use built-in functions, and work with stored procedures and transactions. You’ll also master subqueries, table expressions, aggregations, and error handling, ensuring you can retrieve and manage data accurately, securely, and efficiently.

Course Objective

This course will give you the practical skills to retrieve, manipulate, and manage data using Transact-SQL in Microsoft SQL Server. You’ll gain experience in writing efficient queries, combining data from multiple sources, and applying advanced features for accuracy and performance.

By the end of this course, you will be able to:

Write single-table and multi-table SELECT queries with filtering and sorting
Use JOINs, subqueries, and table expressions to combine and structure data
Apply built-in, aggregate, and window functions for analysis
Work with stored procedures, parameters, and transactions
Implement error handling and best practices for reliable query execution

Course Outline

Module 1: Introduction to Transact-SQL

What is Transact-SQL
The SELECT statement
The WHERE clause
Sorting results
Calculations and CASE expressions

Module 2: Joining Tables

The JOIN clause
Inner, outer, self, and cross joins

Module 3: Filtering and Sorting Results

ORDER BY clause
WHERE clause filtering
Limiting rows returned
NULL handling

Module 4: SQL Server Data Types

String and temporal data types
Data type usage best practices

Module 5: Inserting, Updating, and Deleting Data

Insert new records
Update existing data
Delete data safely

Module 6: Using SQL Server Functions

Function types in SQL Server
Data conversion functions
Logical functions
Handling NULLs

Module 7: Aggregating Data

Aggregation methods
GROUP BY and HAVING clauses
Filtering aggregated results

Module 8: Subqueries

Scalar, multi-valued, and correlated subqueries
Using EXISTS with subqueries

Module 9: Table Expressions

Views
Table-valued functions
Derived tables
Common table expressions (CTEs)

Module 10: Combining Data Sets

UNION, INTERSECT, and EXCEPT
APPLY operator

Module 11: Window Functions

Understanding and implementing window functions

Module 12: PIVOT and Grouping Sets

Data pivoting
Grouping sets for advanced aggregations

Module 13: Stored Procedures

Executing stored procedures
Input/output parameters
Creating simple procedures
Using dynamic SQL

Module 14: Programming Features in T-SQL

Loops and conditions

Module 15: Error Handling

SQL Server error handling methods
Structured exception handling

Module 16: Transactions

Transaction concepts
Implementing transactions in T-SQL