CockroachDB Schema Diff Online — Compare & Migrate CockroachDB Schemas

CockroachDB Schema Diff.
Generate migrations.
Zero setup.

Paste two cockroachdb dump --dump-mode=schema outputs. Spot every table, column, index, and constraint change instantly. Get ready-to-run ALTER TABLE scripts for CockroachDB — all in your browser.

No account required. No data leaves your device.

Built for CockroachDB workflows

SchemaLens understands CockroachDB-specific syntax that generic diff tools miss.

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SERIAL & UUID Primary Keys

Correctly detects SERIAL, UUID, and ROWID primary key changes across schema versions.

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GEOGRAPHY & GEOMETRY

Recognizes GEOGRAPHY and GEOMETRY spatial types, plus GEOMETRYCOLLECTION and related SRID constraints.

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Constraints & Indexes

Primary keys, unique constraints, foreign keys, CHECK constraints, and inverted indexes — all compared semantically, not by raw text.

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Quoted Identifiers

Handles double-quoted identifiers ("User") and mixed-case table names exactly like CockroachDB does.

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Array & JSONB Columns

Recognizes INTEGER[], TEXT[], JSONB, and warns when these advanced types appear so nothing slips through.

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Privacy First

Your schema never leaves the browser. Compare production schemas safely without uploading sensitive table structures to a third-party server.

How it works

Export your schemas

Run cockroachdb dump --dump-mode=schema old_db > old.sql on both databases.

Paste into SchemaLens

Copy the SQL into the two editor panes. Select PostgreSQL dialect — CockroachDB is PostgreSQL-wire compatible.

Review the diff

See added tables, dropped columns, type changes, and constraint modifications highlighted in color.

Copy the migration

Export ALTER TABLE scripts, save as Markdown, PDF, or raw SQL. Run in staging, then production.

CockroachDB migration examples

SchemaLens generates production-ready ALTER TABLE scripts for every change it detects.

Column type change

ALTER TABLE "users"
  ALTER COLUMN "bio" TYPE VARCHAR(500);

Add a new column

ALTER TABLE "orders"
  ADD COLUMN "shipped_at" TIMESTAMP;

Add a foreign key

ALTER TABLE "comments"
  ADD CONSTRAINT "fk_comments_post"
  FOREIGN KEY ("post_id") REFERENCES "posts"("id");

Set a default value

ALTER TABLE "tasks"
  ALTER COLUMN "status" SET DEFAULT 'pending';

Related guides

PostgreSQL