SQL Lineage Visualization Tool

A free SQL lineage tool that runs entirely in your browser

Understanding SQL lineage — how data flows from source tables through transformations into your final outputs — is one of the hardest parts of working with a modern data stack. When a dashboard number looks wrong or a pipeline breaks, you need to trace dependencies fast. This SQL lineage visualization tool does exactly that: drop in your .sql files and instantly get an interactive diagram of every table, view, and CTE and the relationships between them. It works as a general-purpose SQL viewer too — a clean way to read, explore, and make sense of unfamiliar SQL without opening a database client.

Why choose this SQL lineage tool

Most SQL lineage tools are heavy, hosted platforms that require you to connect a warehouse, create an account, and send your queries to a third-party server. That is a non-starter when your SQL contains proprietary schemas and business logic. This is a free SQL viewer and lineage tool that flips that model: all parsing and rendering happen locally in your browser tab. Nothing is uploaded, nothing is stored, and there is no sign-up. It is the fastest way to get SQL viewer online functionality with lineage on top — open the page and start visualizing in seconds.

Table and column lineage from your SQL

The lightweight extractor recognizes the SQL patterns that show up in real ETL and analytics code: CREATE TABLE AS SELECT, CREATE VIEW, INSERT INTO … SELECT, common table expressions (WITH …), and FROM / JOIN references. Upload several files at once and dependencies are resolved across them, so you can map an entire pipeline in a single view. Expand any node to inspect column-level lineage and follow a field from its origin all the way downstream. Derived and aggregated columns are flagged so you can see where logic is applied.

A lightweight alternative to Python SQL lineage libraries

If you have reached for a Python SQL lineage library like sqllineage or sqlglot to script out dependencies, this tool is the zero-setup visual companion: no pip install, no notebook, no environment to manage. Paste or drop your SQL and get an instant, shareable picture of the graph. It is dialect-agnostic and handles the common ANSI-style patterns used in Snowflake, BigQuery, Postgres, and Spark SQL, making it a practical everyday SQL viewer for data engineers, analytics engineers, and anyone who needs to reason about how their SQL fits together.