Multi Database Schema Compare - SQL Planner - Full-Stack SQL Server & Windows Infrastructure Monitoring

Schema Compare

Compare two database schemas, see every difference side by side, and generate a deployment script written in your database's own native SQL — for SQL Server, MySQL, PostgreSQL, and Oracle.

SQL ServerMySQLPostgreSQLOracle

Why it's different

One table, four native dialects

Most of the work in comparing schemas is speaking each database correctly. Schema Compare never reuses one generic syntax — it reads each platform's own catalog and writes each object in that platform's real grammar. Here is the same table, generated four ways:

SQL Server brackets · IDENTITY

CREATE TABLE [dbo].[Country] (
  [CountryId] INT IDENTITY(1,1) NOT NULL,
  [Name]      NVARCHAR(100) NOT NULL,
  CONSTRAINT [PK_Country] PRIMARY KEY ([CountryId])
);

MySQL backticks · AUTO_INCREMENT

CREATE TABLE `country` (
  `country_id` INT NOT NULL AUTO_INCREMENT,
  `name`       VARCHAR(100) NOT NULL,
  PRIMARY KEY (`country_id`)
);

PostgreSQL quotes · IDENTITY

CREATE TABLE "public"."country" (
  "country_id" integer GENERATED BY DEFAULT AS IDENTITY,
  "name"       varchar(100) NOT NULL,
  CONSTRAINT "pk_country" PRIMARY KEY ("country_id")
);

Oracle quotes · NUMBER IDENTITY

CREATE TABLE "HR"."COUNTRY" (
  "COUNTRY_ID" NUMBER GENERATED BY DEFAULT AS IDENTITY,
  "NAME"       VARCHAR2(100) NOT NULL,
  CONSTRAINT "PK_COUNTRY" PRIMARY KEY ("COUNTRY_ID")
);

What you can do

Capabilities

Everything you need to find, understand, and resolve the gap between two databases of the same platform.

Compare two schemas

Point at a source and a target of the same technology and get a complete object-by-object comparison.

Native deployment scripts

Generate a synchronization script in the target's own SQL — brackets, backticks, quotes, sequences and all.

Side-by-side diff

See the source on the left and the target on the right, each rendered as real CREATE statements, line for line.

Broad object coverage

Tables, columns, keys, indexes, constraints, views, routines, sequences and more — not just table shells.

Connect & pick a database

Test a connection, list the databases on the server, and choose exactly which one to read on each side.

Review before you deploy

Nothing changes until you say so. Read the script, decide what to keep, then run it when you're ready.

Coverage

What gets compared

Tables & columns
Data types & lengths
Nullability
Identity / auto-increment
Primary keys
Foreign keys
Unique & non-unique indexes
Check constraints
Default values
Views
Stored procedures
Functions
Sequences
Synonyms (Oracle)

Same platform on both sides. A comparison always runs source-to-target within one technology — SQL Server to SQL Server, MySQL to MySQL, and so on. That's what lets the generated script stay perfectly native to your database instead of a lowest-common-denominator guess.

The flow

How it works

A short, guided path from two connections to a script you can trust.

Choose your database technologySQL Server, MySQL, PostgreSQL, or Oracle — this sets the dialect for the whole session.
Connect the sourceEnter the server, sign in, test the connection, and pick the database to read from.
Connect the targetDo the same for the database you want to bring in line with the source.
Run the comparisonSchema Compare reads both catalogs and lists every object that's added, missing, or different.
Review the side-by-side diffOpen any object to see source and target as real CREATE statements next to each other.
Generate & deploy the scriptProduce the native synchronization script, review it, and run it when you're ready.