SQL — Hello World
The classic first query in SQL — a single SELECT of a literal — for testing highlighters, SQL parsers, and query editors.
-- The classic first query, in SQL.
SELECT 'Hello, world!' AS greeting;
Specifications
- Language
- SQL
- Kind
- hello-world
- Lines
- 2
- Encoding
- UTF-8
- Line Endings
- LF
Testing contract
Expected to pass- Scenario
- Parse the file with a SQL parser and execute it against any SQL engine.
- Expected result
- One statement parses and returns a single row with a single column named `greeting` holding the string `Hello, world!`. There is no FROM clause, so it runs unchanged on SQLite, PostgreSQL, MySQL and DuckDB.
What is a .sql file?
SQL files contain plain-text Structured Query Language statements, typically schema definitions, data inserts, or queries used to build or populate a database. Dialect details vary between engines such as PostgreSQL, MySQL, and SQLite. A dump file often recreates an entire database when executed.
How to use this file
Use an example SQL file to test statement parsing, database restore and migration tooling, and dialect-compatibility of import pipelines.
How to use this file for testing
“SQL — Hello World” is a deterministic Novus Examples fixture for Syntax highlighting, Code parsing, Editor testing. Idiomatic hello-world programs and realistic snippets across sixteen languages, exercising comments, string escapes, interpolation, numeric literals, and language keywords — for testing syntax highlighters, editor themes, and tree-sitter grammars.
Documented properties for this file: SQL · UTF-8 · LF. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
This is a short, known-correct source file. Run it through your syntax highlighter, linter, formatter, tree-sitter grammar, or parser, and open it in the in-browser editor to tweak and re-download. Each snippet exercises comments, string escapes, literals, and language keywords.
Code examples
psql mydb < hello-world.sql # PostgreSQL
mysql -u user -p mydb < hello-world.sql # MySQLRelated files
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- cC — Hello WorldThe classic hello-world in C — an include, main, and printf — for testing highlighters, C compilers, and parsers against the canonical first program.
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- cC StructC struct SAMPLE for clangd / highlighter fixtures.
- csC# FibonacciA small C# iterator Fibonacci utility — realistic snippet for language tooling.
Generated by generation/code_samples.py. Free for any use, no attribution required — license.