Beginner's Guide: Core SQL Skills From Table Design to Data Insights

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SQL is a foundational language for interacting with databases, starting with the CREATE TABLE statement to define data structure, column types, and constraints. Tables can be modified after creation using ALTER TABLE, allowing developers to rename or remove columns as requirements change. Data is added using INSERT INTO, where correct syntax — such as quoting text but not numbers — is essential for proper data-type interpretation. The SELECT statement, combined with filters like WHERE, BETWEEN, IN, and LIKE, enables users to query and narrow down results effectively. Advanced features such as COUNT and CASE WHEN allow for summarising data and applying custom logic, such as grading exam results into categories like Pass or Distinction.

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AgentsKit brings six open-source tools to simplify JavaScript AI agent development

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Solon AI v4.0.3 Introduces 'Talent' Layer to Improve Agent Tool Management

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