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SQL Querying: Fundamentals

Unlock the power of SQL databases with this comprehensive course that teaches you the fundamentals of querying. Learn how to connect to databases, execute queries, include search conditions, perform calculations, organize data, and retrieve data from multiple tables. Perfect for individuals with basic computer skills looking to enhance their data analysis and reporting abilities.

  • Beginner
  • 18 and older
  • $395
  • 2 Park Ave, New York, NY & Virtually Online
  • 6 hours & 45 minutes
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  • $395
  • ONLC Grand Central Station @ 2 Park Ave 20th Fl, New York, NY 10016
  • 6 hours & 45 minutes
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Class Description

Description

What you'll learn in this sql server training:

Organizations use large SQL databases to store information about clients, products, or sales. However, that data is locked into those databases until it is accessed by a business intelligence tool such as Power BI, Tableau or Crystal Reports. With the proper permissions, analysts can use SQL to select the data they need for additional analysis and reporting. This class, SQL Querying: Fundamentals, provides an overview of the SQL commands that can be used to access that data.

You will:

  • Connect to the SQL Server database and execute a simple query.
  • Include a search condition in a simple query.
  • Use various functions to perform calculations on data.
  • Organize the data obtained from a query before it is displayed on-screen.
  • Retrieve data from multiple tables.

Target Student / Prerequisite: This course is intended for individuals with basic computer skills, familiar with concepts related to database structure and terminology, and who want to learn the basics of querying SQL databases using the SELECT statement.

Note: Some familiarity with database terminology and structure is helpful.

Course Outline

How to retrieve data from a single table

  • An introduction to the SELECT statement
  • How to code the SELECT clause
  • How to code the WHERE clause
  • How to code the ORDER BY clause
  • How to code the LIMIT clause

How to retrieve data from two or more tables

  • How to work with inner joins
  • How to work with outer joins
  • Other skills for working with joins
  • How to work with unions
  • How to code summary queries
  • How to work with aggregate functions
  • How to group and summarize data
  • How to code aggregate window functions

How to code subqueries

  • An introduction to subqueries
  • How to code subqueries in the WHERE clause
  • How to use the ALL keyword
  • How to code subqueries in other clauses
  • How to work with complex queries
  • How to work with common table expressions

How to work with data types

  • The data types
  • How to convert data

How to use functions

  • How to work with string data
  • How to work with numeric data
  • How to work with date/time data
  • Other functions you should know about

Refund Policy

Cancellation / Reschedule by Student

Because we must schedule rooms, ship course materials, assign instructors and provision computer resources well in advance, it is important students alert us ASAP with any cancel/reschedule requests.

Please note the following policies:

  • If requested 16 or more calendar days before the class
    • Cancellation requests made in this timeframe are eligible for refund less 5% cancellation fee.
    • Reschedule requests made in this timeframe will be accommodated if availability exists and will be processed at no additional charge.
  • If requested 15 calendar days or less before the class
    • Cancellation or Reschedule requests made by the student 15 calendar days or less before the class starts will be charged 100% the course fee and are not entitled to a refund.

Substitutions

  • If you are unable to attend your class, a substitute who meets the course prerequisites may attend in your place at no additional charge for the original class title, date and location. If you cannot find a substitute, you will be subject to the class cancellation policy.

Make-up Policy

Students are permitted one (1) Make-Up opportunity to attend an instructor-led class that was paid for but not previously attended for no additional charge.

  • Make-Up class registrations are subject to availability and are not entitled to refund.
  • Students may not reschedule a Make-up class registration.
  • Any no shows or cancellations forfeit their one Make-up opportunity.

Additionally, ONLC reserves the right to retire courses due to lack of demand. Retired classes are not available for Make-Up.

In the event that an instructor or the school needs to cancel at the last minute, students will receive a refund less a 5% non-refundable registration fee.

In any event where a customer wants to cancel their enrollment and is eligible for a full refund, a 5% processing fee will be deducted from the refund amount.

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