SQL Server Schema Diff.
Generate migrations.
Zero setup.

IDENTITY & Sequences

Correctly detects IDENTITY(1,1) columns, seed changes, and increment modifications across schema versions.

Bracket-Quoted Identifiers

Handles bracket-quoted identifiers ([table name]) exactly like SQL Server does, preserving spaces and reserved words.

Constraints & Indexes

Primary keys, unique constraints, foreign keys, CHECK constraints, and CLUSTERED/NONCLUSTERED indexes — all compared semantically.

Named Default Constraints

Generates DF_table_column convention names for default constraints, saving you from manual lookup.

NVARCHAR & Unicode

Preserves NVARCHAR, NCHAR, and NTEXT types with length specifications so your migrations stay exact.

Privacy First

Your schema never leaves the browser. Compare production SQL Server schemas safely without uploading to any third-party server.

Column type change

ALTER TABLE [users]
  ALTER COLUMN [bio] NVARCHAR(500);

Add a new column

ALTER TABLE [orders]
  ADD [shipped_at] DATETIME;

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]
  ADD CONSTRAINT [DF_tasks_status]
  DEFAULT 'pending' FOR [status];