#sql hackathon ideas

5 ideas across 5 categories · 1 beginner · 4 intermediate · 0 advanced. Sorted by judging fit (editorial estimate).

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AI
Ask Your CSV in Plain English
Upload a CSV, ask a question and get a chart plus the SQL that produced it
Intermediate14h1–2
DuckDBLLMCharts
18/20
EdTech
SQL Playground with Real Datasets
Practise SQL on real datasets right in the browser
Beginner10h1
DuckDBNext.js
17/20
Devtools
SQL Query Plan Visualizer
Turn a database query plan into a visual tree with plain-language tips
Intermediate14h1–2
PostgresEChartsLLM
17/20
AI Agents
Read-Only Postgres MCP Server with Guardrails
Let an AI assistant query your database safely with read-only, row-limited access
Intermediate14h1–2
MCP SDKPostgresNode.js
16/20
Web3
Mini Contract Event Indexer
Index a contract's events into SQL in minutes
Intermediate16h1–2
ViemDuckDBNode.js
16/20

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