SQL explainer
Paste a SELECT query and get a readable explanation of what it does. Parsing and explanation run entirely in your browser, so your SQL stays private.
What is a SQL explainer?
A SQL explainer turns SELECT query structure into human language. Instead of asking you to read every clause in raw SQL form, it summarizes which tables the query reads from, what it selects, how it filters rows, and how it shapes the final output.
This is especially helpful when you're reviewing a teammate's query, debugging generated SQL, learning a new codebase, or trying to understand an unfamiliar analytics query quickly.
What this explainer looks for
- Selected columns and computed expressions
- Base tables and aliases
- Join types and join conditions
- WHERE filters before aggregation
- GROUP BY and HAVING clauses after aggregation
- ORDER BY and LIMIT output shaping
Private by default
The entire tool runs in the browser. Your SQL is parsed locally using JavaScript, which means nothing is uploaded to Basedash or sent to an external API just to explain the query.
From understanding queries to replacing them
Once you understand the query you need, Basedash can often remove the need to hand-write it at all. Connect your data source, describe the chart or metric you want in plain English, and Basedash generates the SQL and visualization for you.
FAQ
What does the SQL explainer cover?
It explains SELECT queries by breaking down the selected fields, source tables, joins, WHERE filters, GROUP BY clauses, HAVING filters, ORDER BY clauses, and LIMIT clauses. It turns the parsed query into a readable summary instead of showing raw AST output.
Is my SQL sent to a server?
No. The parser and explainer run entirely in your browser using JavaScript. Your SQL never leaves the page, and nothing is stored or logged by Basedash.
Can it explain multiple SQL statements?
Yes. If parsing succeeds, the tool explains each semicolon-separated statement in order. If some statements are unsupported, you'll see a warning for those statements while still getting explanations for any supported SELECT queries.
Does this run the query against a database?
No. The tool only parses the SQL text and explains its structure. It does not connect to a database, execute the query, or validate whether the referenced tables and columns exist.
Why would a valid query show a warning?
The explainer is intentionally focused on SELECT statements. Queries like INSERT, UPDATE, DELETE, or DDL may parse correctly but still show a warning because the tool does not yet generate human-readable explanations for those statement types.
Why explain SQL instead of just formatting it?
Formatting makes a query easier to read, while an explainer helps you understand what the query is actually doing. It's useful for onboarding, code review, debugging AI-generated SQL, and quickly checking unfamiliar queries before you run them.
Stop deciphering SQL and start exploring data
Connect your data, ask a question in plain English, and let Basedash build the query and chart for you.