SQL courses can help you learn database design, data manipulation, query optimization, and data retrieval techniques. You can build skills in writing complex queries, managing relational databases, and ensuring data integrity. Many courses introduce tools like MySQL, PostgreSQL, and Microsoft SQL Server, demonstrating how to use these platforms for data analysis and reporting. You'll also explore key topics such as joins, indexing, and transaction management, which are vital for effective data management and analysis.

Skills you'll gain: Unsupervised Learning, Dimensionality Reduction, Scikit Learn (Machine Learning Library), Machine Learning Algorithms, Applied Machine Learning, Data Preprocessing, Text Mining, Machine Learning, Big Data, Model Evaluation, Performance Metric
★ 4.7 (372) · Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Penetration Testing, Exploit development, Metasploit, Application Security, Security Testing, Cyber Security Assessment, Vulnerability Scanning, Brute-force attacks, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Memory Management, Amazon Web Services, SQL, Amazon Elastic Compute Cloud, Operating Systems, Data Validation
★ 4 (279) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Unix Commands, Bioinformatics, grep, Unix Shell, Unix, Data Management, Command-Line Interface, Linux Commands, Molecular Biology, Bash (Scripting Language), Big Data, Data Manipulation, File Management, Data Analysis Software, Data Processing, Life Sciences
★ 4 (573) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: LangChain, LLM Application, Tool Calling, AI Workflows, Generative AI Agents, Agentic Workflows, Artificial Intelligence and Machine Learning (AI/ML), Application Development, Data Visualization, Agentic systems, Analytics, Software Development
★ 4.5 (151) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Spark, PySpark, Applied Machine Learning, Big Data, Machine Learning Methods, Data Storage Technologies, Statistical Machine Learning, Data Preprocessing, Data Storage, Data Pipelines, Machine Learning Algorithms, Machine Learning, Data Processing, Data Science, Model Evaluation, Descriptive Statistics
★ 3.8 (1.3K) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Tidyverse (R Package), Clinical Data Management, R (Software), Health Insurance Portability And Accountability Act (HIPAA) Compliance, R Programming, Medical Privacy, Clinical Research Ethics, Google Cloud Platform, Data Ethics, Data Science, Health Informatics, Statistical Programming, Data Wrangling, Data Processing, Electronic Medical Record, Data Manipulation, SQL, Data Access, Query Languages
★ 4.5 (436) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Oracle Databases, Database Design, Database Theory, Database Management Systems, Database Systems, Relational Databases, Databases, Database Architecture and Administration, Database Management, Data Storage Technologies, Data Storage, Transaction Processing, Data Modeling, Diagram Design
★ 4.6 (482) · Beginner · Course · 1 - 3 Months

Yonsei University
Skills you'll gain: Spatial Data Analysis, Spatial Analysis, Geospatial Information and Technology, Geographic Information Systems, Geospatial Mapping, GIS Software, Database Management Systems, Big Data, Database Systems, Apache Hadoop, Data Modeling, PostgreSQL, Network Analysis
★ 4.5 (532) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft Azure, Data Processing, Database Theory, Databases, Data Store, Database Systems, Database Management Systems, Cloud Services, Data Storage, Database Management, Relational Databases, Query Languages, NoSQL, Data Management, Cloud Computing, Data Analysis, Data Visualization Software
★ 4.7 (493) · Beginner · Course · 1 - 4 Weeks

Meta
Skills you'll gain: Full-Stack Web Development, Front-End Web Development, Django (Web Framework), Web Design and Development, Scalability, HTML and CSS, Cloud Hosting, Responsive Web Design, Web Development, Web Applications, Cloud Deployment, Back-End Web Development, MySQL, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Cloud Computing, Application Programming Interface (API), Restful API, Virtual Environment, Javascript
★ 4.6 (239) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Looker (Software), Responsible AI, Data Lakes, Data Storytelling, Cloud Infrastructure, Data Governance, Gemini, Data Visualization, Interactive Data Visualization, Data Presentation, Data Architecture, Data Pipelines, Data Visualization Software, Dashboard, Data Management, Google Gemini, Dashboard Creation, Data Infrastructure, Cloud Storage, Identity and Access Management
★ 4.4 (254) · Beginner · Professional Certificate · 3 - 6 Months
University of Michigan
Skills you'll gain: Stored Procedure, PostgreSQL, SQL, Database Management, Database Design, Relational Databases, Query Languages, Data Transformation, Data Manipulation, Data Import/Export, Data Integrity, Transaction Processing, Performance Tuning, Algorithms
★ 4.7 (340) · Intermediate · Course · 1 - 4 Weeks