Beginners Guide to Developing SQL Queries for SQL Server

Learn to Summarise data using aggregation and Query multiple tables

Microsoft SQL Server is robust relational database management system used by so many
organizations of various sizes including top fortune 100 companies.

SQL -Structural Query language is the language used to interrogate and manipulate
Microsoft SQL Server Databases.

This course is a beginners course that will walk you through how to develop queries
to execute on and SQL Server Database.

We will start by developing queries to :
Retrieve data with SELECT
Use Aliases
Use Case Expressions
Retrieve data from a view
Eliminate duplicates
Filter data with equality filters
Filter data with basic comparisons
Filter data with string comparisons
Filter data with logical comparisons
Filter data with NULL comparisons
Use order by clause
Sort data by ascending order
Sort data by multiple columns
Add new records
Update existing records
Delete records

There may be times when want to retrieve data from multiple tables and in course
we will do that using:
Inner joins
Left outer joins
Right Outer joins

We will also be Summarising data with aggregate functions such as:

COUNT
SUM
AVG
MIN
MAX
Grouping data
ORDER BY Clause

SQL forms the cornerstone of all relational database operations. Taking full advantage of its power requires an in-depth understanding of the language. In this course, you learn to use the full potential of SQL to write simple queries for SQL Server databases. You will gain the practical skills to choose the best query method to ensure accuracy and avoid common errors or pitfalls.

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