Data & configuration
SQL
SQL (Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS). It is particularly useful in handling structured data, i.e., data incorporating relations among entities and variables.
- Created by
- Donald D. Chamberlin , Raymond F. Boyce
- First appeared
- 1974
- Official resource
- Visit the main website
Your first program
Hello, World!
-- Assuming a table named 'Messages' exists with a column 'Text'
SELECT 'Hello, World!' AS Message;Keep learning
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Official resource
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Teach me the basics of SQL. Use https://code.study/sql as the starting point. Explain what SQL is best suited for, when I should not choose it, how to install or try it, and then walk me through its Hello World example step by step.
Content reviewed August 2026 · Start with primary sources and verify version-specific details.