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SQL Level 2

Enhance your SQL skills by mastering Outer Joins, NULL data, grouping, aggregate functions, filtering, and working with dates/times. Extract and analyze specific data from databases, turning raw information into valuable insights. Prerequisite: SQL proficiency equivalent to Noble Desktop's SQL Level 1 course.

  • Intermediate
  • 18 and older
  • $350
  • Earn 10% Rewards
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  • 185 Madison Ave, New York, NY & Virtually Online

Start Dates (8)

  • $350
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  • Tue, May 21 at 6:00pm - 9:00pm
  • Thu, May 23 at 6:00pm - 9:00pm
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Class Description


What you'll learn in this sql class:

Expand your SQL skills by learning how to use Outer Joins, find NULL data, group data with aggregate functions, filter groups with HAVING, work with dates/time, and more.

In this intermediate SQL course, you’ll build on your knowledge of SQL fundamentals, enhancing your skills to join, filter, group, and analyze data.

You’ll learn how to use Outer Joins and find NULL data. Group data and perform common statistical calculations using aggregate functions. Working with data requires the ability to change the data type when it’s not what you need (using CAST), and to be able to work with and format date and time information. 

By the end of this intermediate hands-on course, you’ll know more SQL techniques to extract and analyze the specific data you want from the database. This will enable you to more easily turn raw data into actionable insights.


  • SQL proficiency equivalent to our SQL Level 1 course is required, including basic querying, fundamentals of filtering (WHERE, LIKE, and wildcards), and inner JOINs.

What You'll Learn at a Glance

  • Learn to use Outer Joins and find NULL data
  • Group data and perform common statistical calculations using 
  • Aggregate Functions 
  • Filter grouped data with HAVING 
  • Use CAST to make a data type fit your query’s needs 
  • Work with dates and time

Learn more about SQL Level 2 at Noble Desktop.


Inner vs Outer JOIN

Outer Joins & Finding NULLs

  • Left Join
  • Right Join
  • Full Join
  • Find NULL values

Manipulating, Aggregating, & Filtering Data

Using CAST to Change Data Types

  • Why and how to use CAST to make a data type fit your query’s needs

Aggregate Functions

  • Using Aggregate Functions to perform common statistical calculations
  • Using SUM, COUNT, AVG, MAX & MIN

Working with Dates & Time

  • Date Functions: Getting the desired part of a date/time (Year, Month, Day, etc.)
  • Formatting dates, including the day of the week (Sunday, Monday, etc.)
  • Calculating the difference between 2 dates

Grouping Data & Filtering Grouped Data

Grouping Data with Aggregate Functions

  • Using GROUP BY to organize results into categories
  • Applying Aggregate Functions to groups

Filtering Grouped Data with HAVING

  • Using HAVING to filter the results of a GROUP BY

Refund Policy

  • Students may cancel up to 14 days before the class/program start date and receive a refund, less the registration fee (10% of the undiscounted course price). 
  • Cancellations within 14 days are not permitted, but students may reschedule up to three business days before the class start date.
  • For cancellations and reschedules, please email us at [email protected]"

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We are located in New York City on 34th street and Madison Avenue, a few blocks from Penn Station, Port Authority and Times Square. You may also attend this class live online (virtual training) via Zoom. We will reach out with additional information, including the Zoom info and class files.

Also available virtually online

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