SQL Diff
Compare two SQL queries or schemas — highlight additions, deletions, and changes with line-level diff.
About SQL Diff
Comparing SQL queries is essential during code review, performance optimization, and database migration work. This tool performs a line-by-line diff of two SQL queries or schema definitions, showing exactly what changed between versions. The keyword case-insensitive mode normalizes SELECT/select differences so you can focus on meaningful content changes rather than stylistic ones.
Use SQL diff when reviewing query changes in pull requests, comparing stored procedure versions, auditing schema migration changes, and debugging query regressions where a previously working query was modified.
FAQ
Can I diff entire SQL schema files?
Yes. Paste the contents of two .sql migration files to see every added, removed, or changed line. For comparing structural schema differences (table column changes, index changes), use the SQL Table Diff tool which understands SQL DDL structure.