Beskrivelse
Lær at skrive grundlæggende Transact-SQL forespørgsler på Microsoft SQL Server. Dette kursus danner grundlaget for alle SQL Server-relaterede discipliner, som databaseadministration, databaseudvikling og Business Intelligence.
Forudsætninger
Du forventes at have kendskab til relationelle databaser.
Deltagerprofil
Kurset er rettet mod alle, som arbejder med SQL-databaser og giver dig den grundlæggende viden om Transact-SQL forespørgsler.
Indhold
Module 1: Introduction to Microsoft SQL Server
The Basic Architecture of SQL Server
SQL Server Editions and Versions
Getting Started with SQL Server Management Studio
Module 2: Introduction to T-SQL Querying
Introducing T-SQL
Understanding Sets
Understanding Predicate Logic
Understanding the Logical Order of Operations in SELECT statements
Module 3: Writing SELECT Queries
Writing Simple SELECT Statements
Eliminating Duplicates with DISTINCT
Using Column and Table Aliases
Writing Simple CASE Expressions
Module 4: Querying Multiple Tables
Understanding Joins
Querying with Inner Joins
Querying with Outer Joins
Querying with Cross Joins and Self Joins
Module 5: Sorting and Filtering Data
Sorting Data
Filtering Data with Predicates
Filtering with the TOP and OFFSET-FETCH Options
Working with Unknown Values
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Module 6: Working with SQL Server Data Types
Introducing SQL Server Data Types
Working with Character Data
Working with Date and Time Data
Module 7: Using DML to Modify Data
Inserting Data
Modifying and DRemoving Data
Generating automatic column values
Module 8: Using Built-In Functions
Writing Queries with Built-In Functions
Using Conversion Functions
Using Logical Functions
Using Functions to Work with NULL
Module 9: Grouping and Aggregating Data
Using Aggregate Functions
Using the GROUP BY Clause
Filtering Groups with HAVING
Module 10: Using Subqueries
Writing Self-Contained Subqueries
Writing Correlated Subqueries
Using the EXISTS Predicate with Subqueries
Module 11 Using Table Expressions
Using Views
Using Inline Table-Valued Functions
Using Derived Tables
Using Common Table Expressions
Module 12: Using Set Operators
Writing Queries with the UNION Operator
Using EXCEPT and INTERSECT
Using APPLY
Module 13: Using Windows Ranking, Offset, and Aggregate Functions
Creating Windows with OVER
Exploring Window Functions
Module 14: Pivoting and Grouping Sets
Writing Queries with PIVOT and UNPIVOT
Working with Grouping Sets
Module 15: Executing Stored Procedures
Querying Data with Stored Procedures
Passing Parameters to Stored procedures
Creating Simple Stored Procedures
Working with Dynamic SQL
Module 16: Programming with T-SQL
T-SQL Programming Elements
Controlling Program Flow
Module 17: Implementing Error Handling
Implementing T-SQL error handling
Implementing structured exception handling
Module 18: Implementing Transactions
Transactions and the database engines
Controlling transactions
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Deltagerprofil Kurset er relevant for dig, som gerne vil lærer at skrive grundlæggende SQL eller Transact-SQL-forespørgsler. Du arbejder typisk med data som dataanalytiker, dataengineer, datascientist, databaseadministrator eller databaseudvikler.
Forudsætninger Du forventes at have kendskab til relationelle databaser.
Lær om standard SQL-sproget Transact-SQL. På kurset får du indblik i forespørgsel og ændring af data i relationsdatabaser, der hostes i Microsoft-baserede databasesystemer herunder Microsoft SQL Server, Azure SQL Database og Azure Synapse Analytics.
Lær, hvordan du laver SQL Server forespørgsler
Lær at skrive SELECT sætninger foir at hente kolonner fra en eller flere tabeller
Lær, hvordan du sorterer og filtrer
Lær at bruge built-in funktioner til dataværdier
Lær, hvordan du opretter grupper af data og hvordan du samler resultaterne
Lær at redigere data med Transact-SQL ved hjælp af INSERT, UPDATE, DELETE and MERGE
Indhold Modul 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.
- Introduction to Transact-SQL
- Using the SELECT statement
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.
- Sorting query results
- Filtering the data
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.
- Using JOIN operations
- Using 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.
- Getting started with scalar functions
- Grouping aggregated results
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.
- Inserting data into tables
- Modifying and deleting data
Overvejer du et kursus i SQL Server? Microsofts SQL server kommer med mange fordele, som for eksempel stor sikkerhed og skalerbarhed. I denne artikel kan du læse mere om, hvorfor du skal tage et kursus i SQL Server.
Få 5 fordele ved SQL Server
