Querying Data with Microsoft Transact-SQL (DP-080)
Volg de DP-080 training Querying Data with Microsoft Transact-SQL. Deze training leert de basis van Microsoft's dialect van de standaard SQL-taal: Transact-SQL. Onderwerpen zijn onder meer het opvragen en wijzigen van gegevens in relationele databases die worden gehost in op Microsoft SQL Server gebaseerde databasesystemen, waaronder: Microsoft SQL Server, Azure SQL Database en Azure Synapse Analytics.
Na afronding van deze training kun je onder andere:
Training: Querying Data with Microsoft Transact-SQL (DP-080)
This course will teach the basics of Microsoft’s dialect of the standard SQL language: Transact-SQL. Topics include both querying and modifying data in relational databases that are hosted in Microsoft SQL Server-based database systems, including: Microsoft SQL Server, Azure SQL Database and, Azure Synapse Analytics.
- 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
Everyone that wants to start with writing basic SQL or Transact-SQL queries can start with this training.
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.
Module 1: Getting Started with Transact-SQL
In this module you will learn about the basics of the Transact-SQL (T-SQL) language, as well as general properties and terminology of relational databases. This module will also introduce the basic SELECT statement for retrieving data from a table.
Lessons
Introduction to Transact-SQL
Using the SELECT statement
Lab : Get started with SQL Server query tools and writing queries in T-SQL
After completing this module, students will be able to:
Using a query tool to write and execute queries in Transact-SQL
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
Module 2: Sorting and Filtering Query Results
In the module you will learn how to control what data is returned, the order in which it is returned. You will use the ORDER BY clause, with and without paging. You will learn about various kinds of filters that can be used in the WHERE clause to control which data rows are returned. You will also learn how to manage the results by removing duplicates with DISTINCT.
Lessons
Sorting query results
Filtering the data
Lab : Sort and filter data returned by SELECT queries
After completing this module, students will be able to:
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
Module 3: Using Joins and Subqueries
In this module, you will explore T-SQL queries which access data from multiple tables with various kinds of JOIN operations and simple subqueries.
Lessons
Using JOIN operations
Using subqueries
Lab : Write queries with JOIN operationsLab : Write SELECT statements using subqueries
After completing this module, students will be able to:
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
Module 4: Using Built-in Functions
In the module you will explore the use of built-in functions for returning computed or special values in the SELECT list or in the WHERE clause. Functions include math functions, string functions and system functions. There are other types of functions that will be mentioned, but not discussed in detail. You will also learn how to combine rows of data into a single group, providing summary information for the group such as SUM, MIN or MAX.
Lessons
Getting started with scalar functions
Grouping aggregated results
Lab : Built-in functions
After completing this module, students will be able to:
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
Module 5: Modifying Data
In this module, you will learn the T-SQL statements for modifying table data including UPDATE, DELETE and MERGE as well as various options for INSERT including creating a new table with data from an existing table. You will also look at how to have the system automatically supply values for columns as the data is inserted.
Lessons
Inserting data into tables
Modifying and deleting data
Lab : Modify data
After completing this module, students will be able to:
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
In de klas, online of beiden.

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