SQL Migration Risk Reviewer

Meet SQL Migration Risk Reviewer

Built around the work.

Check SQL scripts for syntax errors, dangerous database changes, and potential data loss before execution. SQLReviewer is a SQL Server script analyzer and SQL migration checker for Windows. Detect risky ALTER TABLE, DROP, DELETE, UPDATE, constraint, and index operations. Review findings for free, or upgrade to Pro to verify supported risks against real database data, explore safer SQL changes, and export detailed reports. **SQL MIGRATION RISK ANALYSIS:** Analyze SQL Server and Azure SQL migration scripts to identify potentially destructive database operations, failing schema updates, broken dependencies, and performance-related concerns. SQLReviewer examines supported T-SQL statements, including DROP TABLE, DROP COLUMN, TRUNCATE TABLE, ALTER COLUMN, UPDATE, DELETE, CREATE INDEX, DROP INDEX, ALTER INDEX, database constraints, and object renames. Each detected finding is linked to its source file and SQL statement, making it easier to investigate risks without manually searching through long migration scripts. Review your database changes with clear severity levels and explanations before deployment. **DETECT POTENTIAL DATA LOSS:** Identify SQL operations that may remove existing information, modify important records, or produce unexpected results. SQLReviewer highlights destructive schema changes, table truncation, column removal, text column narrowing, incompatible data type conversions, and numeric precision changes. A migration that appears simple may still fail or affect valuable information when applied to a populated database. Understand the possible consequences of each supported operation, review the affected database objects, and determine whether the migration requires additional preparation, data preservation, or a different deployment strategy. **IDENTIFY SCHEMA MIGRATION FAILURES:** Database migrations frequently fail because existing records do not satisfy new schema requirements. SQLReviewer detects supported risks involving NOT NULL columns, missing default values, duplicate keys, primary key constraints, unique indexes, foreign key relationships, and CHECK constraints. Adding a required column to a populated table, introducing uniqueness requirements to duplicated data, or creating a foreign key with orphaned records can prevent deployment from succeeding. SQLReviewer helps explain these conditions and identifies what should be investigated before attempting the migration. **REVIEW INDEXES, LOCKS, AND LARGE DATABASE CHANGES:** Database deployments can affect application performance and availability even when they do not directly delete information. Analyze supported index creation, rebuilding, and removal operations, large table alterations, potentially expensive updates, and transaction-related concerns. SQLReviewer highlights changes that may require batching, additional testing, or scheduling during a maintenance window. Review potential blocking and operational impact before deploying SQL scripts to busy database environments. Exact execution times and lock durations are not predicted or guaranteed. **VERIFY RISKS AGAINST REAL DATABASE DATA WITH PRO:** SQLReviewer Pro extends static analysis with database-aware verification for supported SQL Server and Azure SQL scenarios. Connect to a target database, inspect available schema metadata, and examine proposed verification queries before approving execution. Supported checks can measure affected rows, identify existing NULL values, detect duplicate keys, investigate constraint violations, examine dependencies, and provide evidence about potential migration failures. Verification queries are restricted to validated SELECT statements, run inside transactions that are rolled back, and use configurable timeouts. Checks that are skipped, unsupported, or unsuccessful remain unverified rather than being presented as confirmed results. **UNDERSTAND SQL FINDINGS WITH ACTIONABLE EXPLANATIONS:** SQLReviewer provides a structured report that connects potential problems directly to the migration code responsible for them. Browse findings organized by severity, rule identifier, source file, line number, and verification status. Select a finding to inspect the corresponding SQL, understand the possible impact, and review available evidence or suggested next steps. When database verification is available, reports can include relevant row counts, schema information, and dependency details. The integrated report interface brings findings, source code, and supporting explanations together for efficient investigation. **EXPLORE SAFER SQL MIGRATIONS WITH PRO:** SQLReviewer Pro suggests alternative approaches for supported risky changes. Depending on the detected issue, recommendations may include using suitable default values, cleaning incompatible data before adding constraints, splitting large modifications into batches, delaying destructive operations until a later release, or applying an expand, migrate, and contract strategy. Review suggested SQL and understand why an alternative may reduce certain risks. These suggestions are intended for developer evaluation and may require modification, additional testing, and approval before production use. SQLReviewer never automatically executes a suggested migration. **COMPARE ORIGINAL AND MODIFIED SQL SIDE BY SIDE:** Use the Safer Script workflow in SQLReviewer Pro to examine your original migration alongside a proposed alternative. Highlight changed lines, select supported fixes, inspect statements moved to a later release, and make additional edits when necessary. Recheck the modified script to identify remaining static findings or syntax errors, then save the resulting SQL for further review and testing. This workflow helps developers understand how suggested modifications affect a migration while preserving visibility into the original code and the changes being proposed. **ANALYZE SQL FILES AND MIGRATION FOLDERS:** Open individual .sql files, paste T-SQL directly into SQLReviewer, or select a folder containing SQL migration scripts. Review supported versioned Flyway-style migration files in version order and examine database changes across multiple scripts. Built-in examples help new users explore the analysis workflow without requiring a database connection. SQL syntax highlighting, source navigation, recent files, and linked findings make script inspection easier. Some SQLCMD commands, external includes, and unsupported SQL constructs require manual review because they are not fully expanded or analyzed. **CONFIGURABLE SQL RISK DETECTION:** SQLReviewer includes 17 built-in rules covering destructive schema modifications, potential data loss, failing constraints, incompatible column changes, risky data operations, index concerns, and other supported SQL Server migration scenarios. Enable or disable individual rules and configure available table-size thresholds to better match your development environment. Supported in-script suppression comments allow developers to document intentionally accepted findings. Suppressed findings remain visible in the analysis rather than disappearing from the report, helping teams distinguish acknowledged risks from unresolved concerns. **EXPORT SQL REVIEW REPORTS WITH PRO:** Generate professional database migration review reports in Markdown, HTML, JSON, and SARIF formats using SQLReviewer Pro. Share findings during pull request reviews, maintain technical documentation, or process structured results in compatible development workflows. Exported reports can include risk descriptions, severity levels, source locations, verification status, supporting evidence, and suggested improvements. SQLReviewer also includes a command-line companion for supported analysis tasks, giving developers another way to inspect SQL migration scripts outside the graphical interface. **FREE SQL ANALYSIS AND OPTIONAL PRO UPGRADE:** Start using SQLReviewer with free static SQL migration analysis, built-in risk detection, source-linked findings, explanatory information, configurable rules, and sample scripts. No database connection is required for basic script review. Upgrade to SQLReviewer Pro to unlock supported real database verification, advanced evidence, safer migration workflows, side-by-side script comparisons, and professional report exports. SQLReviewer Pro is available as a separate one-time purchase through the Microsoft Store, with no recurring subscription required for the Pro add-on. **LOCAL-FIRST DATABASE REVIEW:** SQLReviewer analyzes SQL migration scripts locally on your Windows computer without requiring an external analysis server. The application does not upload migration scripts to a cloud analysis service or automatically apply database changes. Database verification is initiated by the user, with planned queries displayed for approval. SQL login passwords are stored using Windows Credential Manager, and the application can warn when an account has database write permissions. Using a dedicated read-only database account is recommended, especially when reviewing changes against production environments. SQLReviewer focuses on inspection and preparation, not database deployment. **DESIGNED FOR SQL SERVER AND AZURE SQL DEVELOPERS:** Built specifically around T-SQL and Microsoft database environments, SQLReviewer is suitable for .NET developers, SQL Server developers, database administrators, software maintainers, and engineering teams responsible for database deployments. Use it to examine schema updates, investigate risky migration scripts, review SQL changes prepared by teammates, and prepare technical discussions before release. SQLReviewer supports Microsoft SQL Server and Azure SQL Database, runs on supported Windows 11 system.

See the Microsoft Store listing for current features, system requirements, supported languages, and purchase options.