{ "schema": "tesign-radar/item/1", "generated_at": "2026-09-17T01:56:13.055Z", "lang": "en", "slug": "sql-to-er-diagram", "url": "https://tesign.com/en/item/sql-to-er-diagram/", "alternates": { "ko": { "html": "https://tesign.com/item/sql-to-er-diagram/", "json": "https://tesign.com/item/sql-to-er-diagram/index.json", "markdown": "https://tesign.com/item/sql-to-er-diagram/index.md" }, "en": { "html": "https://tesign.com/en/item/sql-to-er-diagram/", "json": "https://tesign.com/en/item/sql-to-er-diagram/index.json", "markdown": "https://tesign.com/en/item/sql-to-er-diagram/index.md" } }, "name": "SQL to ER Diagram", "use_label": "SQL schema to ER diagram, in-browser", "one_liner": "Paste CREATE TABLE DDL, get an interactive ER diagram drawn entirely in your browser", "text": { "why": "There is no server, so the schema never leaves the machine, and a share link carries the whole project (SQL, layout, camera, dialect) gzip+base64-encoded in the URL hash. The canvas renderer (cached bitmaps plus viewport culling) was benchmarked at ~120 fps zooming 300 tables and 593 FKs, and double-clicking a table or column name on the canvas writes the change back into the SQL text with comments and formatting preserved. Two dependencies, 32 KB gzip bundle.", "take": "The design point: the SQL file stays the source of truth, and the diagram is a two-way editor for it.", "build": [ "dist/ is plain static files, so it can sit on an internal wiki or GitHub Pages as the team's schema page; MIT means you can fork it and add your own SQL dialect parser." ], "who": [ { "role": "Backend developers", "situation": "paste a migration file and check the relationships" }, { "role": "Data analysts", "situation": "visualize CTE dependencies of a BigQuery WITH query" }, { "role": "Team leads", "situation": "share a schema review as one link, no accounts" } ], "start": [ { "command": false, "text": "npm install" }, { "command": false, "text": "npm run dev # http://localhost:5173" }, { "command": false, "text": "npm run build # outputs static files to dist/" }, { "command": false, "text": "npm run preview # preview the production build locally" }, { "command": false, "text": "No install: https://sqltoerdiagram.com" } ], "caveat": [ "MIT. Browser-only app. Per the README the parser covers PostgreSQL, MySQL, SQLite, SQL Server and Snowflake plus a BigQuery mode (the live site also lists Oracle, MariaDB, Prisma, DBML and others, which the README does not). Parsing centres on CREATE/ALTER TABLE with PK, FK and UNIQUE constraints; views, indexes and triggers are not in the supported list. Last push 2026-07-17." ] }, "cta": { "type": "try", "label": "TRY", "url": "https://sqltoerdiagram.com./" }, "ready": "browser", "categories": [ "data", "dev-tools" ], "categories_confirmed": true, "tags": [ "erd", "sql", "database", "diagram", "canvas", "static-site" ], "platform": [ "web" ], "license": { "spdx": "MIT", "scope": "permissive", "scope_text": "Use, change and redistribute, commercially too. Keep the notice.", "url": "https://spdx.org/licenses/MIT.html", "note": null, "open_source": true }, "language": "HTML", "source_urls": { "canonical": "https://sqltoerdiagram.com./", "github": "https://github.com/royalbhati/sqltoerdiagram", "huggingface": null, "app_store": null, "sightings": [ { "source": "github", "url": "https://github.com/royalbhati/sqltoerdiagram", "posted_at": "2026-06-14T06:00:00.000Z", "hn_url": null } ] }, "numbers": { "as_of": "2026-09-16T21:00:00.000Z", "stars": 618, "stars_unit": "GitHub stars", "stars_checked_at": "2026-09-15T19:34:33.185Z", "stars_observed_since_check": 0, "star_delta_24h": null, "star_delta_7d": null, "star_delta_30d": 2, "star_delta_unit": "GitHub stars gained in the window, GH Archive events summed to as_of", "spark_14d": [ null, 2, null, null, null, null, null, null, null, null, null, null, null, null ], "hf_likes": null, "hf_likes_observed_at": null, "hn_points": null, "hn_points_observed_at": null, "store": null, "method": "Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours." }, "ranks": null, "activity": { "pushed_at": "2026-07-17T16:17:09.000Z", "owner_type": "User", "open_issues": 1, "contributors": 2, "releases_count": 0, "latest_release": null, "checked_at": "2026-09-15T19:34:33.185Z", "core_checked_at": "2026-09-15T19:34:33.185Z" }, "signals": [ { "kind": "back", "label": "BACK CATALOG", "value": null } ], "images": { "og": "https://tesign.com/img/sql-to-er-diagram-ee5a44a02c.png", "cover": "https://tesign.com/img/sql-to-er-diagram-ee5a44a02c.png", "cover_width": 2400, "cover_height": 1260, "gallery": [ "https://tesign.com/img/sql-to-er-diagram-ee5a44a02c.png" ], "alt": "The SQL editor panel beside an ER diagram canvas where table boxes are joined by foreign-key lines", "tier": 1 }, "dates": { "first_seen_at": "2026-09-13T08:17:48.734Z", "source_created_at": "2026-06-14T04:12:26.000Z", "discovery_hours": 2188.089648333333, "launch_signal_at": "2026-06-14T06:00:00.000Z", "kept_at": "2026-09-14T19:27:43.498Z", "first_published_at": "2026-09-14T19:27:43.735Z", "updated_at": "2026-09-15T04:36:57.018Z", "ingestion_mode": "backfill" }, "notes": [ "This file was produced by the same build, from the same data, as the tesign.com item page. The text is editorial; the numbers are stored observations.", "null in the JSON means not observed — never zero. The Markdown writes [unconfirmed] for it.", "Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.", "Reconstructed from archive data, not a live discovery.", "A summary, not legal advice." ] }