Interactive workbench
SQL DDL to ER Diagram
Parse SQL DDL into a clean ER-style diagram summary and Mermaid output.
What schema shape and relationship map is implied by this SQL DDL right now?
How to use it
- Set the assumptions on the left until they match the workload you are reviewing.
- Validate the structured result, metrics, and recommendations before exporting.
- Copy or export the artifact directly into the design doc, ticket, runbook, or review packet.
What you leave with
- A Mermaid ER diagram derived from the parsed tables and relationships.
- Table and relationship counts for quick scope checks.
- A schema export you can paste into documentation immediately.
Tool inputs
SQL DDL to ER Diagram
Paste CREATE TABLE statements and export a schema summary with Mermaid ER syntax.
Supported best with CREATE TABLE statements and inline or constraint-based foreign keys.
Shortcut keys: Ctrl/Cmd + Shift + C copies the current output, and Ctrl/Cmd + Shift + S saves a revision snapshot.
Result
ER-style schema output
Parsed 2 tables and 1 relationships from the supplied DDL.
Tables
2
Total tables detected in the supplied DDL.
Relationships
1
Foreign-key relationships detected across the schema.
Filter line-level matches before you export or share the result.
Operator takeaways
- The tool turns raw DDL into a reviewable ER artifact immediately, which is useful when schema changes arrive before docs do.
- Relationship counts help reviewers understand whether the schema is lightly connected or already carrying meaningful coupling.
Recommended next steps
- Paste the Mermaid output into docs or tickets so schema reviewers can reason about the model without reading raw SQL.
- If the schema is still evolving, compare versions with Schema Diff Checker before migrations are approved.
FAQ
Questions teams ask before they adopt this workflow.
When should teams use SQL DDL to ER Diagram?
This tool is most useful when the team needs a fast, reviewable answer before moving into a larger design, documentation, or governance workflow.
Who usually benefits most from SQL DDL to ER Diagram?
Architects, platform teams, and technical leads get the most value because they need a clear artifact they can copy into reviews, runbooks, tickets, and stakeholder updates.
How does SQL DDL to ER Diagram connect back to Architecto?
The free surface reduces friction. Once the team needs richer diagrams, review automation, or documentation outputs, the matching Architecto feature takes over without changing the workflow language.
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Continue in Architecto
Use the exported artifact from SQL DDL to ER Diagram as the first review input, then move into Db Visualizer when the team needs a deeper design, diagram, or review workflow.
Open matching moduleRelated modules