This is the best Udemy Spatial SQL with Postgres : A language for geographers coupon code discount for 2025.
So if you’re interested in Arthur Lembo’s “Spatial SQL with Postgres : A language for geographers” course, which will help you increase your Business skills, get your discount on this Udemy online course up above while it’s still available. (The coupon code will be instantly applied.)
Spatial SQL with Postgres : A language for geographers review for 2025
In our review of this course, we try to help you answer all of your most important questions about Spatial SQL with Postgres : A language for geographers as quickly and efficiently as possible, so that you can determine whether this online education training is worth your time and money.
Feel free to jump to whatever question you want answered the most.
Here’s what you’ll learn:
Why use SSWP:ALFG as an abbreviation of the course name?
During our Spatial SQL with Postgres : A language for geographers course review, you might sometimes see us refer to it as SSWP:ALFG for the following 2 reasons:
- We created the acronym by taking the first letter of every word (which was very ingenious and innovative, we know)
- We’re lazy and SSWP:ALFG is simpler and easier for reviewing purposes
The full course name is 54 characters long, including blanks, while SSWP:ALFG is 9 characters long.
You do the math.
Okay, we’ll do the math. We’re saving 45 characters every time we use SSWP:ALFG.
So, just a heads up that we’ll be using this abbreviation sometimes, so you’re not left scratching your head and wondering what the heck we’re talking about whenever we refer to SSWP:ALFG throughout the remainder of this review.
Is the Spatial SQL with Postgres : A language for geographers course for you?
To determine whether Arthur Lembo’s Udemy course is a good fit for you or not, ask yourself the following questions down below.
The more you answer “yes” to each question, the more likely it is that you’ll like this course.
Can you understand what Arthur Lembo’s course is about in 30 seconds or less?
Hopefully, you can easily grasp in 10 seconds or less what this online course is about simply by taking a look at the title that Arthur Lembo chose for the course, “Spatial SQL with Postgres : A language for geographers”, as well as its subtitle: “learning spatial SQL and GIS with Postgresql and PostGIS for performing sophistical data analytics and data mining”.
This combo of title and subtitle should be enough to communicate the purpose of the training if Arthur Lembo is a good, clear communicator (which, of course, you want in a teacher).
In our opinion, if you still don’t know what SSWP:ALFG is about after looking at these two things, then this is a red flag, and you might be better off not taking this class.
Among other things, it means Arthur Lembo hasn’t clearly and accurately conveyed what the course is about and might not be the best teacher for you.
For similar reasons, it’s important that you’re able to clearly understand what Spatial SQL with Postgres : A language for geographers is all about from the first few lines of the course description.
So take just a few seconds to read the opening lines down below and see what you think of them.
Opening lines of Arthur Lembo’s official description of SSWP:ALFG
Are you stuck in a rut of only knowing how to use a GIS GUI? Do you want to learn how to automate tasks, but are afraid of computer programming. If so, SQL is the most powerful tool you can learn to help you perform complex GIS tasks. This course is designed to teach you how to write SQL to replicate many database and GIS tasks. We will start at a very basic overview, and then proceed to more advanced topics related to GIS.
Through a series of lectures, I will work side-by-side with you to develop SQL queries that perform advanced GIS tasks, some of which might be impossible to perform in the GUI. Once my students learn GIS, they very rarely want to return back to using the GUI.
By writing SQL code alongside me, you will see how solving GIS tasks in SQL is like a second nature. This is a very comprehensive course that should take multiple days to complete – but don’t worry about that – you will be having a lot of fun learning how powerful SQL can be, and continually ask yourself “why didn’t I start using SQL sooner!”
(Read more about this course on the official course page.)
Does SSWP:ALFG pass the 30 Seconds Test?
You can read a lot more about Spatial SQL with Postgres : A language for geographers on the official course page on Udemy, but the point is this: are the title, subtitle, and just the first few lines of the description enough to help you understand what the course is about?
If so, Arthur Lembo has done a good job and can be considered more trustworthy and a good communicator, which are important qualities for any teacher.
And, if not, maybe you’re better off looking at other Business classes that are more clearly defined and more tailored to your specific interests.
Did Spatial SQL with Postgres : A language for geographers appeal to you in 30 seconds or less?
Now that you’ve done the 30 Second Test with SSWP:ALFG above, what is your gut reaction to this Business course with only the basic information of its title, subtitle, and the first few opening lines of its official course summary?
Did Arthur Lembo do a good job conveying its subject matter, and did it immediately get your attention and appeal to you?
If so, Arthur Lembo’s online course is certainly worth considering some more.
But if not, perhaps it’s in your best interest to consider some other Business courses instead, because clear communication and being able to hook and maintain your interest are two very important qualities for your online learning success.
Does Arthur Lembo sound like a course instructor you’d like to learn from?
You’ve already learned how to use The 30 Second Test to make a quick evaluation of whether the SSWP:ALFG course is worth taking.
We have a similar 15 Second Bio Test where you read only the first few lines of an instructor’s background — in this case, Arthur Lembo’s background — and then you make a quick, snap judgment as to whether you think the instructor would be ideal for you.
There is no right or wrong answer. It’s just about going with your gut instinct. What might appeal to one potential student might alienate another, and vice versa.
(FYI, all Udemy instructors, including Arthur Lembo, have a Udemy profile on their course page, so you can easily check for a bio and background on the Udemy website that way. We’re only including the first few lines of the bio down below for The 15 Second Bio Test).
Opening lines from Arthur Lembo’s Udemy bio
Dr. Arthur J. Lembo, Jr. is an educator with a passion for GIS and almost 30 years of GIS industry experience. He has won numerous teaching awards, including the prestigious New York State Chancellors award for Excellence in Teaching (2006), and the Maryland Board of Regents Teaching Award (2018) – both of these awards are the highest awards in academia for both States.
(Learn more about this instructor on the official course page.)
What did you think about Arthur Lembo after reading just the first few lines of the bio above?
After reading just the first few lines about Arthur Lembo, did it make you more or less interested in taking the SSWP:ALFG course?
And did it make you feel like Arthur Lembo was more or less credible and qualified to teach Spatial SQL with Postgres : A language for geographers?
Finally, overall, did you feel like you’d receive the proper training from the instructor of this Business course?
As always, we encourage you to listen to your gut instinct, which is different for every student.
Are the SSWP:ALFG lessons clear, specific, and organized well?
Part of the (good) problem with Udemy’s online courses, such as the Spatial SQL with Postgres : A language for geographers course, is that the instructors are constantly updating them, including adding and renaming lessons.
So it makes no sense whatsoever for us to list out all the modules and lessons in the SSWP:ALFG course here, because you can just as easily go to the Udemy course page and get all the up to date course structure as of right now.
We do, however, have some tips about reviewing Arthur Lembo’s course structure, so that you can get a better sense of whether this program is worth your time or not.
In a nutshell, you want to scan the the titles of the different sections and lessons of the course, and verify that they are clearly relevant to the course’s name, Spatial SQL with Postgres : A language for geographers, as well as the course’s subtitle, learning spatial SQL and GIS with Postgresql and PostGIS for performing sophistical data analytics and data mining.
If the section names and lessons are clear, specific, and relevant, then it’s a good sign that SSWP:ALFG is potentially a good, useful course for you, and you can have more confidence in Arthur Lembo’s teaching abilities and lesson planning.
On the other hand, if the module names are confusing, vague, or irrelevant, then this is a red flag, which might indicate that the program is worth skipping.
Have you taken some free lessons from Arthur Lembo that you enjoyed?
Have you already learned something from Arthur Lembo that you valued or enjoyed?
For example, does the Spatial SQL with Postgres : A language for geographers training have some free lessons that you can try? (Almost all Udemy instructors will give you at least one or two lessons for free to help you make a better, more informed decision before enrolling in their course.)
But if you weren’t able to get any SSWP:ALFG lessons for free, have you perhaps watched a YouTube video by Arthur Lembo, or perhaps come across this instructor’s thoughts on Quora, Facebook, LinkedIn, Github, Reddit, or some other platform?
Or have you perhaps even taken one of Arthur Lembo’s free courses or free webinars? (Many online teachers offer these freebies, which is a great way to get to know them and evaluate their teaching methods before buying one of their courses.)
In any case, the more familiar you are with Arthur Lembo’s teaching methods, and the more you enjoy them, the more likely it is that Spatial SQL with Postgres : A language for geographers will be a good fit for you.
(P.S.: We strongly encourage you to seek out some free instruction from Arthur Lembo before purchasing this course, since it’s one of the best ways to determine whether SSWP:ALFG will be helpful for you.)
Are “Spatial SQL with Postgres : A language for geographers” reviews generally positive?
On the bottom of the SSWP:ALFG page, you can read student reviews of the class.
Prior to August 25, 2025, there were 1,554 students enrolled, 529 reviews / ratings, and it was overall rated 4.5 out of 5.
Obviously, the more highly other students rate SSWP:ALFG the better, but no matter what, keep an open mind when reading the reviews, since you might still like a course a great deal that other students dislike.
After all, everyone’s got their own opinion.
We recommend that you spend only a couple minutes scanning the SSWP:ALFG reviews to get an overall sense of them. You don’t have to read each one!
Is Arthur Lembo responsive to student questions in the SSWP:ALFG training?
You can see what other students have to say about this in their SSWP:ALFG reviews.
But, our simple all time favorite way of gauging an instructor’s responsiveness is to simply email the instructor and see if or how they respond.
In this case, Udemy has a messaging system for students / anyone who has an account, and you can send Arthur Lembo a message through this system quite easily, even if you haven’t bought SSWP:ALFG yet.
For example, you could say, “Hi, and I came across SSWP:ALFG while looking at Business courses on Udemy. If I enroll in your training, would you mind if I asked you any questions along the way?”
If you use this approach, the response (or lack of response) from the professor will tell you everything.
Obviously, the quicker the response the better!
Are you comfortable going through the lessons in Spatial SQL with Postgres : A language for geographers on your own, online?
This is a big one, because Spatial SQL with Postgres : A language for geographers is an online course as opposed to a course that you physically take in a classroom.
Of course, you will need a good internet connection to have access to the course material and lessons, but beyond that, you also have to be comfortable being self motivated to some degree, being on your own, and not having any physical interaction with any of the other students taking Spatial SQL with Postgres : A language for geographers.
Yes, you will be able to interact with the students and the teacher, Arthur Lembo, online, but it’s a different kind of experience than what you’d get if you were interacting with them in person.
This is not a big deal to most people, but it might be something for you to consider if you feel like you do better taking classes in person rather than learning online.
Do the pros / benefits of SSWP:ALFG make it worth your time?
Ideally, if you’ve gone through the evaluation steps above, you have a list of positive things about the Spatial SQL with Postgres : A language for geographers training that looks something like this:
- The purpose of SSWP:ALFG can be clearly grasped and understood, and its lesson structure is clear, specific, and well organized
- Arthur Lembo is well qualified to teach this subject matter, has good teaching abilities, and is responsive to student questions
- Other SSWP:ALFG students have great things to say about the program
Other benefits include:
- You get to go through SSWP:ALFG at your own pace
- You join a community of 1,554 other students taking the course
- You get lifetime access to the training
- All updates to the training are free
- You have a 30 day money back guarantee
Even if there are some things that you don’t like about the program, so what?
The question is simply this: do you think that SSWP:ALFG would be worth your time, even if there are some things that could be better about it?
Can you comfortably afford SSWP:ALFG?
Can you comfortably afford the cost of Spatial SQL with Postgres : A language for geographers?
This is an important question to answer, because even if you think SSWP:ALFG sounds like the greatest online class in the world, it’s still not worth taking if you can’t comfortably afford it!
Before August 25, 2025, the price was $14.99 before any Udemy discount, and you were able to pay with a credit card.
Keep in mind that this is a Udemy online course, and there’s a great chance that you can get a solid discount on SSWP:ALFG with Udemy coupons / promo codes, especially with the strategies we provide for helping you find the best, most popular coupons available.
We’ll cover that in greater detail in the next section, because at the end of the day, its important that you can learn whatever you want to learn without getting into a lot of credit card debt.
How can you maximize your discount on Spatial SQL with Postgres : A language for geographers?
By far, the easiest way to get the best and biggest discount on this course is to use the Spatial SQL with Postgres : A language for geographers discount code link at the top of this page.
It will instantly give you the best coupon code we could find for Arthur Lembo’s online training.
We don’t believe there’s a bigger discount than the one we provided, but if for some reason you’d like to try find one, you can use the methods below to hunt for the best SSWP:ALFG course coupons and promo codes you can find.
FYI, the methods below will help you not just with getting SSWP:ALFG for a better price, but also with any other Arthur Lembo Udemy course that you’d like to get for cheaper.
How can Google help you get a SSWP:ALFG discount?
To use this method, do a Google search for the SSWP:ALFG training, but in your search query, be sure to add words like coupon code, promo code, deal, sale, discount, and Udemy.
For example, you might do a search for “Udemy Spatial SQL with Postgres : A language for geographers promo code” or “Spatial SQL with Postgres : A language for geographers udemy coupon codes” and see what turns up.
Similarly, you can use the same combination of search terms with Arthur Lembo’s name and see what happens.
For example, you might do a Google search for “Arthur Lembo Udemy coupons” or “Arthur Lembo course coupon codes” and see if that helps you.
However, in general, it’s far more powerful to do a search for deals and coupon codes with the actual training’s name, than with the instructor’s name.
So in this case, for example, prioritize searches for “Spatial SQL with Postgres : A language for geographers coupons” rather than “Arthur Lembo coupons”.
How can a Udemy sale get you SSWP:ALFG for cheaper?
Every once in while, Udemy will do a sitewide sale where they offer all (or almost all) their courses at a discounted price. For example, one of the best sales is where every course is only $10 or $9.99.
So, if you’re interested in saving as much money as possible, you could wait and see if you can get SSWP:ALFG for this cheaper Udemy sale price one day.
The problem is that these sales only occur sporadically, so you might be waiting for a while. Also, if Arthur Lembo decides not to participate in the site wide sale, then you won’t get a discount on SSWP:ALFG, even though you could get a great discount on almost any other class at Udemy!
To understand this, think of there as being two different coupon categories for the SSWP:ALFG course. Category one is an official Udemy coupon (which instructors can opt out of), while category two is a coupon offered directly by the instructor.
At the end of the day, it doesn’t matter what kind of a coupon tag you’re dealing with (for example, “officially from Udemy” or “officially from the instructor”), as long as long as as you’re dealing with active coupons that get you a better price.
How can you get a SSWP:ALFG discount from Arthur Lembo?
If you’re really serious about getting “Spatial SQL with Postgres : A language for geographers” for the cheapest price possible, then perhaps one of the most powerful things you can do is get a coupon code straight from Arthur Lembo, instead of waiting for a Udemy sale.
To do this, you can use either the direct approach or an indirect approach to try to get your discount.
With the direct approach, the big idea is to simply get Arthur Lembo’s contact info in some way or another (whether it’s email, or Twitter, or whatever else).
Then you send a message saying something like “I’m interested in enrolling in Spatial SQL with Postgres : A language for geographers. Do you happen to currently have an active coupon code for it that I could use?” (And then, hopefully, you’ll get a reply with your discount code.)
On the other hand, with the indirect approach, you join Arthur Lembo’s mailing list, if you can find it, and then you hope that at some time SSWP:ALFG will be promoted to you at a discount.
By far, the more powerful approach is the direct approach, because it tends to get results faster. But you can experiment with the indirect approach and see if it works for you.
Can you get SSWP:ALFG for free?
Of course, the best possible price for the SSWP:ALFG training is free! As in, you pay no money whatsoever.
And guess what? Sometimes Udemy instructors provide coupon codes that enable students to take their courses for free. So, perhaps it’s possible that Arthur Lembo has done this.
Basically, if you’re trying to get this program for free, you will want to search for the course’s name along with other words like free coupon, or 100 off coupon.
For example, you might do a google search for “Spatial SQL with Postgres : A language for geographers free coupon” or “Spatial SQL with Postgres : A language for geographers 100 off coupon” and see what happens.
But keep this in mind: often, Udemy teachers will offer a free coupon for their course when it first opens to get some publicity and reviews. And then, after a few days, they’ll make the coupon expired.
So even Arthur Lembo has offered free coupons for SSWP:ALFG in the past, the odds are likely they will all be currently expired. This is a common pattern that we have found.
What about a SSWP:ALFG free download?
It’s important to understand that there’s a difference between getting full access to the SSWP:ALFG training for free legally with a free coupon code vs. finding a way to download SSWP:ALFG illegally.
If you really want to go the download route, you can do a google search for something like “Spatial SQL with Postgres : A language for geographers download”.
And if that doesn’t get you the results you want, you can add the word “free” to your search.
For example, perhaps you could do a google search for “Spatial SQL with Postgres : A language for geographers free download”.
However, even if you get some results from these searches, we do not recommend that you take this course of action.
First of all, there are some shady sites out there that could be trying to infect your computer.
Second, Arthur Lembo created this course and deserves monetary compensation for it.
And third, if you go the free download route, you’ll be missing out on a lot of value, because you won’t be able to ask the instructor questions or interact with the other 1,554 students enrolled in the program.
Can you get a refund on Spatial SQL with Postgres : A language for geographers if you don’t like it?
Let’s say that you used our tips above, and you were able to buy the SSWP:ALFG training at a fantastic discounted price. So at this point, you’re super excited.
Then, you actually dive into Arthur Lembo’s course, and you discover that it just isn’t for you for whatever reason.
And now you’re super bummed, because you feel like it wasn’t money well spent.
Well, guess what?
Udemy offers a rock solid 30 day money back guarantee on all their courses, so you can get a refund on SSWP:ALFG no matter what. And this means there is absolutely no risk.
Indeed, even if you left a super negative, critical review on the SSWP:ALFG training, and then asked for your money back, you’d get a refund. For better or worse, there’s nothing Arthur Lembo could do about it, since it is simply Udemy policy.
To sum it up: yes, you can get a full refund, so at the end of the day, don’t worry about the possibility of purchasing SSWP:ALFG and not liking it, since you can always get your money back.
What is OCP’s overall rating of Spatial SQL with Postgres : A language for geographers?
During this SSWP:ALFG review, you’ve learned about some of the unusual ways we like to evaluate courses, such as with The 30 Second Test and The 15 Second Bio Test.
So our overall review process is perhaps a little unusual and different from other reviews out there. Keep this in mind when you consider the overall rating / score that we have given this course.
Anyway, after taking a look at the SSWP:ALFG training, the instructor, Arthur Lembo, and reading what other students have said about this program, we give it an overall rating of 4.7 out of 5.
Ultimately, though, what matters most is what you would rate it based on the same criteria.
What are some potential alternatives to Spatial SQL with Postgres : A language for geographers?
If you like this course, you might also be interested in:
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5. Mastering Effective Communication
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TLDR: Just the quick facts about SSWP:ALFG
Okay, if all of this was Too Long Didn’t Read for you, here is the Cliff’s Notes version of what SSWP:ALFG’s online training is all about:
SSWP:ALFG coupon & course info
Course Name: Spatial SQL with Postgres : A language for geographers
Subtitle: learning spatial SQL and GIS with Postgresql and PostGIS for performing sophistical data analytics and data mining
Instructor: Taught by Arthur Lembo
Category: Business
Subcategory: Data & Analytics
Provided by: Udemy
Price: $14.99 (before discount)
Free coupon code: Get Udemy coupon code discount at top of page (no charge for coupon, especially since we are compensated for referrals via affiliate marketing)
SSWP:ALFG review info & popularity
Prior to August 25, 2025…
Students: 1,554 students enrolled
Ratings: 529 reviews
Rank: ranked #501 in Udemy Business Courses in Udemy Business Courses
Rankings tip: rankings change all the time, so even if Spatial SQL with Postgres : A language for geographers is a bestseller or one of the top Udemy courses one year, it doesn’t mean it will be a top Udemy course the next year
SSWP:ALFG final details
Languages: English
Skill level: All Levels
Lectures: 19 lectures lectures lessons
Duration: 4 total hours hours of video
What you get: use SQL to manage spatial data
Target audience: students who want to learn SQL
Requirements: Students should have PostGRES and PostGIS installed, but if you don’t there is an lesson on installation
Access: Lifetime access
Peace of mind: 30 day money back guarantee
Availability: available online, as well as on iOS and Android
Download options: check course to see if you can download lessons