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[2026] SQLD All-in-One: Pass on Your First Try Even as a Non-Major

SQLD, where do I even start? This course is for those who feel completely lost - you'll meet a transformed version of yourself after completing it. SQLD All-in-One Pass!

(4.7) 37 reviews

259 learners

Level Beginner

Course period Unlimited

  • algolearn
SQL
SQL
Big Data
Big Data
Data Engineering
Data Engineering
SQLD
SQLD
Coding Test
Coding Test
SQL
SQL
Big Data
Big Data
Data Engineering
Data Engineering
SQLD
SQLD
Coding Test
Coding Test

Reviews from Early Learners

Reviews from Early Learners

4.7

5.0

yun9699

100% enrolled

I recently took this course and passed the SQLD exam. I am a non-major with a liberal arts background. Although I had only briefly handled MariaDB databases before (for reference, the exam is based on MSSQL and Oracle), I believe that even those with no basic database knowledge will be able to understand it sufficiently after taking this course. After completing this course, I solved the Yellow Book from beginning to end (you must take the course first to properly understand the content of the Yellow Book!), and thanks to that, I was able to pass the SQLD certification without difficulty. It was an easy-to-understand course even for non-majors, and in the lecture, after explaining concepts, they immediately solved example problems together, which led to much better understanding than simply listening to theory alone, and was very helpful for actual problem-solving.

5.0

Som J

50% enrolled

Thanks to the textbook and lectures provided in the course, I was able to study quickly and efficiently! This was my first time learning SQL, and I passed the SQLD exam on my first try ^O^ I didn't have enough time to watch all the lectures, but the provided lectures and practice exams made studying much easier Thank you :D It would be amazing if you could prepare an SQLP course too! 😊😊

5.0

xfx9g8rzg6

68% enrolled

Thanks to you, I passed the exam in November 2025. Thank you for creating such a great course!

What you will gain after the course

  • Understanding Data Modeling - Entity, Attribute, Relationship, Identifier

  • Data Models and SQL - Normalization, Relationships and Joins, Transactions, Null Attributes, Identifiers

  • ERWIN Database Modeling Practice

  • SQL Basics and Practical Query Structure and Practice

  • SQL Basics - SELECT, Functions, WHERE, GROUP BY, HAVING, ORDER BY, Joins and Standard Joins

  • SQL Utilization - Subqueries, Set Operators, Group and Window Functions, Hierarchical Queries, Pivot and Unpivot, Regular Expressions

  • Database Management Statements - DDL, DML, DCL, TCL

Perfect fit for the 2026 revised exam!

This is an SQLD All in One course where even beginners with no background or non-majors can pass in one attempt.

SQLD All in One

This course is perfectly tailored for the revised 2026 exam. It provides an easy and fast path to obtaining the SQLD certification.


The SQLD certification is a nationally recognized credential that validates professional knowledge in deeply understanding the core principles of SQL and being able to skillfully apply them in practical work. This course systematically covers essential core theory for passing and actual exam problem-solving and practice, and is designed so that even beginners can learn effectively.

Why You Should Choose This Course:

  • Free SQLD Study Materials Provided: Free exam preparation materials with comprehensive explanations and practice problems (Oracle RDBMS-based)

  • Balance of Theory and Practice: Practical skill enhancement combining SQL theory + query writing practice (Oracle + DBeaver & MS SQL)

  • Practice Problem Solving and Mock Exams Provided: Perfect preparation for passing the exam!


The SQLD certification is your first step toward becoming a data & big data professional. Mastering SQL will enhance not only your data analysis skills but also your data engineering capabilities.


Take on the challenge right now! 🚀

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Your choice leads to success! SQLD All-in-One Pass Try our courses.

Part1. Data Modeling

Part2. SQL Basics and Application

Noraengi Practice Problem Solving

This course has these features!

Slide 960 Px-6

Textbook with comprehensive explanations

We provide textbooks with comprehensive explanations, not summarized PowerPoints.

SQLD Modeling Practice

ERDs that appear in SQLD! They are directly connected to SQL understanding. You can enhance your comprehension through modeling practice.

Includes the latest SQLD exam scope

A textbook that reflects all the latest exam scope. Provided with thorough explanations.

SQL Query Writing Practice

ERD appears in SQLD! It's directly connected to understanding SQL. You can enhance your understanding through modeling practice.

Organized at a glance, easy to remember! Mind maps provided

Neatly organize what you've learned so far and upgrade your skills to the next level!

Practice problems and past exam solutions provided by topic and chapter

Certification exams are all about practice problems🚀 Review what you've learned by solving the problems included in the textbook.

  • Core lectures and detailed textbooks provided so even SQL beginners can fully understand and learn

  • SQL Practice Environment Setup Guide and Practice Sessions

  • Theory questions provided by topic and chapter to help you organize what you've learned while solving problems

  • The shortcut to passing! Provides practical past exam question solving lectures and materials

  • Mind maps provided for easy organization and memorization at a glance

Learning Content

  • You can understand the relationship between data models and SQL.

  • Learn data modeling using ERWin and create it yourself.

  • Learn SQL fundamentals and practice writing queries using Oracle.

  • Learn advanced SQL and management statements and write queries directly.

  • Solve past exam questions and practice tests, and summarize key content.

1. Understanding Data Models

SQLD Part1 > Chapter1

Understanding data models, entities, attributes, relationships, and identifiers

  • Essential content for improving SQL understanding

  • Provides sufficient explanations and concept review questions

2. Data Models and SQL

SQLD Part1 > Chapter2

Normalization, Relationships & Joins, Models and Transactions, Null Attributes, Identifiers

  • In-depth lecture on understanding data models and concept review questions

  • Acquiring data modeling skills through hands-on practice

3. SQL Basics

SQLD Part2 > Chapter1

Basic SQL theory and query writing practice

  • Relational Database Fundamentals

  • Syntax such as SELECT, WHERE, GROUP BY, JOIN, etc.

4. SQL Application

SQLD Part2 > Chapter2

Advanced SQL Query Theory and Writing Practice

  • Subqueries, Sets, Group and Window Functions, TOP-N

  • Hierarchical Queries, Pivot & UnPivot, Regular Expressions

5. Management Statements

SQLD Part2 > Chapter3

RDBMS Management Statement Theory and Practice

  • DML, TCL, DDL, DCL

  • DML and Transactions

  • Database object privilege management

6. Past Exam Questions, Practice Problems, and Key Summary

Organize your learning with past exam questions, practice problems, and mind maps.

  • Key Past Exam Questions and Solutions

  • Mind Map Summary

  • 3 Practice Mock Exams Provided

The person who created this course

In the early 2000s, I started working in the data field. My first job was extracting and loading data using SQL. Back then, watching my seniors doing modeling, I promised myself, 'I'm going to become a modeler someday too.'

Through years of experiencing and studying data, I not only became a data modeler but also developed data analysis capabilities to become a big data analysis expert.

I created this course based on my experiences for those who want to grow as data professionals. By taking this course, you'll be able to go beyond obtaining certifications and develop practical skills as well.

I wish all students happiness always.

  • Big Data AI MBA Adjunct Professor (Current)

  • CEO of IT Startup

  • Working at a large IT service company (Data specialist)

  • Published multiple big data textbooks (Big Data Analytics Engineer written exam, practical exam, etc.)

  • Professional Engineer Information Management


Notes Before Taking the Course

  • The SQL practice environment uses Oracle.

  • The copyright of the learning materials belongs to DataCodeLab. Unauthorized distribution is prohibited.

Practice Environment

  • Operating System and Version (OS): Windows, Mac

  • Tools Used: Oracle 12C & DBeaver, LiveSQL

  • PC Specifications: No restrictions

Learning Materials

  • SQLD self-developed textbook (pdf), practice data & scripts, past exam solutions (pdf), mind map (html), and practice mock exam questions provided

  • Self-developed textbook: Consists of theory explanations, topic-specific review questions, chapter review questions, and practice exam questions

Prerequisites and Precautions

  • SQL beginners can learn

  • Practice problems and exercises after watching lectures, repeatedly review lecture and textbook content


  • SQLD Part1 and Nolaengi practice problem lectures are provided separately

  • The copyright of the lecture materials belongs to DataCodeLab. Unauthorized distribution is prohibited.

Recommended for
these people

Who is this course right for?

  • Those who want to build their credentials with the SQLD certification

  • Those who want to improve their development capabilities by obtaining SQLD in one go

  • Someone who wants to pursue a career as a data scientist with an SQLD certification

  • For those who need both SQLD books and lectures

  • For those who want to build fundamental skills in the changing world of data

Hello
This is

619

Learners

74

Reviews

55

Answers

4.7

Rating

6

Courses

I love studying and sharing knowledge. I have extensive experience in big data and artificial intelligence.

  • 20 years of experience as a data analyst and 5 years of teaching data analysis!

  • Consulting and lecturing for corporations and public institutions in the fields of Big Data and AI

  • Author of "Big Data Analysis Engineer All-in-One" (Written and Practical Exams)

  • CEO of an AI startup

Curriculum

All

60 lectures ∙ (13hr 10min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

37 reviews

4.7

37 reviews

  • heyou32님의 프로필 이미지
    heyou32

    Reviews 1

    Average Rating 5.0

    5

    7% enrolled

    The materials you provide are so well-prepared that they're really helpful for exam preparation!

    • algolearn
      Instructor

      I'm glad it was helpful. :) Thank you for leaving a nice review.

  • somj00169258님의 프로필 이미지
    somj00169258

    Reviews 2

    Average Rating 5.0

    5

    50% enrolled

    Thanks to the textbook and lectures provided in the course, I was able to study quickly and efficiently! This was my first time learning SQL, and I passed the SQLD exam on my first try ^O^ I didn't have enough time to watch all the lectures, but the provided lectures and practice exams made studying much easier Thank you :D It would be amazing if you could prepare an SQLP course too! 😊😊

    • algolearn
      Instructor

      :) Congratulations on passing. It must have been incredibly difficult to pass on the first try without even majoring in it. That's impressive. I'm glad my lectures were helpful to you. Congratulations, and I'll consider SQLP as well. Thank you for leaving such a nice review. ^^

  • xfx9g8rzg63415님의 프로필 이미지
    xfx9g8rzg63415

    Reviews 1

    Average Rating 5.0

    5

    68% enrolled

    Thanks to you, I passed the exam in November 2025. Thank you for creating such a great course!

    • algolearn
      Instructor

      I'm glad to hear you passed. Congratulations. :)

  • changminis0124님의 프로필 이미지
    changminis0124

    Reviews 1

    Average Rating 5.0

    5

    20% enrolled

    Please provide clear and precise explanations. I'll listen carefully.

    • algolearn
      Instructor

      Thank you. I hope my course will be helpful to you. :)

  • dth3149님의 프로필 이미지
    dth3149

    Reviews 1

    Average Rating 5.0

    5

    100% enrolled

    • algolearn
      Instructor

      Thank you for the kind review. :)

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