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1Introduction
AI SQL Generator – a SQL writing assistant for developers and data analysts. Describe your query in natural language and get runnable SQL with logic notes and performance tips. Supports MySQL, PostgreSQL, SQLite, SQL Server, Oracle. Four difficulty levels: simple, multi-table joins, window functions, performance optimization. Paste your table DDL for accurate field generation. PRO members unlock online sandbox execution – run SQL instantly and view result tables, error-free.
2How to Use
Describe Your Requirements
Describe the desired query results in natural language, such as 'calculate the average salary by department and sort in descending order.' You can add filtering, sorting, and grouping conditions.
Provide Table Structure
Optionally paste the CREATE TABLE DDL. AI will generate SQL based on actual field names and types, avoiding fabricated fields.
Select Parameters
Choose the database type (MySQL / PostgreSQL / SQLite / SQL Server / Oracle) and difficulty level (Simple / Multi-table Joins / Window Functions / Performance Optimization).
Generate & Validate
Click 'Generate SQL' to get the SQL, explanation, and execution tips. PRO members can fill it into the online executor with one click to actually execute and view results in the SQLite sandbox.
3FAQ
Is the generated SQL usable?
AI generates standard SQL based on the selected database dialect, with explanations and execution tips. PRO members can also fill the SQL into the online executor for real execution to verify syntax is correct.
How does online execution work?
PRO members' SQL is executed in a server-side SQLite in-memory sandbox. It first executes your provided CREATE TABLE statements, then runs the query, returning real column names and result tables.
What's the difference between the free and PRO versions?
Free users can generate SQL and explanations daily after logging in. PRO members unlock online execution verification, full support for five database dialects, and unlimited usage.
Why should I fill in table structure DDL?
By default, AI guesses fields based on common table designs. After pasting the real table structure, generated results strictly use your field names, types, and relationships, fully consistent with the production database.
How do I choose the difficulty level?
Simple queries are suitable for basic single-table retrieval; multi-table joins generate JOIN statements; window functions are for ranking, cumulative, and other analytical scenarios; performance optimization focuses on indexes and execution efficiency.
