The secret to passing 38 companies: Essential algorithms for the 2025 coding test

Hello, this is Dingco Dingco!

I have launched the Introductory SQL/DB Course. And this course is completely free!

"When I open a book to study SQL, it's 300 pages long—what do people actually use in the real world?"

I have packed the answer to this question into just 2 hours.

30% off all courses to celebrate the launch

To celebrate the launch of the free course, I am offering a 30% discount on all my other courses for two weeks.

• Period: 7 days from today

• Applicable to: All paid courses by DingcoDingco

• Discount Rate: 30%

Master the basics of SQL with the free course, and if you need more in-depth learning, take this opportunity to dive deeper!

Thanks to your constant support, I have released another course. I will continue to provide content that can answer the question, "So, how is this actually used in practice?"

Thank you!

Best regards, Dingco Dingco

Hello, this is Dingcodingco

Thank you so much for taking the course and writing various reviews!!!

I was wondering if I could turn my heart of encouragement and gratitude into a class review event.

For those who have taken more than 80% of the course and written a review on their blog

I would like to give away a Coupang Eats 30,000 won gift certificate!!!

Chicken is expensive, but one is probably enough for you 🍗 🍗 🍗

There are a few annoying conditions, but I really want to eat chicken!

Wow, I really wanted to write a review of the lecture, but for those of you who think you should do it,

Please apply through the link. Thank you. Have a nice evening!! 🥰 🥰 🥰

https://forms.gle/yjHtKDGCNXMrxHmM9

https://forms.gle/yjHtKDGCNXMrxHmM9

Hello everyone, this is Dingcodingco!!

In support of your development studies, we have prepared special benefits in collaboration with JetBrains .
Get 3 months free access to any single IDE from JetBrains, including IntelliJ and Pycharm, with the promo code below!

⚠ Note :
This code is only available to new users who are new to JetBrains .
(Only those who have not previously used a JetBrains paid license can register)

(So, you can just create a new Google email...)

✅ Promo Code : HYUNJOONPARKxJB
✅ Benefits : 3 months free access to JetBrains single IDE (e.g. IntelliJ, PyCharm, WebStorm, etc.)
✅ Expiration date : Until May 13, 2026
✅ How to use :

1. Go to JetBrains official coupon registration page

2. Enter the code and select the IDE you want (only one can be selected😭)

3. Verify the license issued by email

We are also preparing additional benefits for those who have already used JetBrains tools, so please use the code a lot so that we can provide more benefits in the future 🙌

🧑‍🏫 This is a great opportunity for those who wanted to experience the tools or settings used in the lecture firsthand.
Be sure to take it with you!