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.

★ 4.9 (14) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: .NET Framework, Cloud Platforms, Web Content
★ 4.9 (14) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Big Data, Apache Hadoop, Data Infrastructure, Data Processing, Analytics, Data Science, Data Architecture, Distributed Computing, Linux, Software Installation, Scalability, System Configuration
★ 4.7 (7) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PySpark, Apache Spark, Apache Hadoop, Data Pipelines, Big Data, Data Storage Technologies, Data Processing, Distributed Computing, Data Architecture, Data Storage, Data Wrangling, Data Integration, Data Transformation, SQL, Data Manipulation, Performance Tuning
★ 2.8 (8) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Fraud detection, Anomaly Detection, R Programming, Credit Risk, R (Software), Applied Machine Learning, Analytical Skills, Machine Learning Methods, Analysis, Case Studies, Unsupervised Learning, Risk Analysis, Analytics, Business Strategies, Predictive Analytics, Data-Driven Decision-Making, Supervised Learning, Big Data
★ 4.6 (15) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Cloud Security, Database Management, Data Security, Relational Databases, Disaster Recovery, Cloud Management, Databases, System Monitoring, Data Storage, Data Management, Continuous Monitoring, Microsoft SQL Servers, Event Monitoring, IT Infrastructure, Role-Based Access Control (RBAC), Encryption
★ 5 (10) · Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Frontend Integration, Application Programming Interface (API), API Gateway, Secure Coding, Cloud Development, Cloud Deployment, Database Development, Maintainability, Dataflow, Application Deployment, Server Side, Web Applications, Authentications, Authorization (Computing), Data Access
★ 4 (7) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Flask (Web Framework), User Provisioning, User Accounts, Web Development, Web Applications, Object-Relational Mapping, HTML and CSS, Authentications, Cascading Style Sheets (CSS), Database Management, Database Application
★ 4.6 (7) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Data Storytelling, Data Presentation, Data Visualization, Statistical Hypothesis Testing, Data Visualization Software, Dashboard Creation, Clinical Research, Interactive Data Visualization, Health Informatics, Data Wrangling, Data Analysis, Healthcare Ethics, Health Information Management and Medical Records, Health Policy, Looker (Software), Predictive Analytics, Healthcare Industry Knowledge, Data Literacy, Health Technology, Regression Analysis
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Encryption, Cybersecurity, Threat Detection, Exploitation techniques, Data Encryption Standard, Threat Modeling, Security Awareness, Cryptography, Cyber Attacks, Data Security, Databases, Malware Protection, Penetration Testing, AI Security, Vulnerability Assessments, Application Security, Security Engineering, Artificial Intelligence, SQL
★ 5 (6) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Secure Coding, PHP (Scripting Language), Web Applications, Operational Databases, Data Management, Generative AI, Web Development, AI Enablement, ChatGPT, Application Development, Application Security, Microsoft Visual Studio, Cascading Style Sheets (CSS), SQL
★ 4.7 (6) · Intermediate · Guided Project · Less Than 2 Hours

Amazon Web Services
Skills you'll gain: Apache Hadoop, Apache Spark, Big Data, Amazon Web Services, Business Intelligence, Command-Line Interface, Data-Driven Decision-Making, Data Processing, Analytics
★ 4.8 (9) · Beginner · Course · 1 - 4 Weeks