SQLite SQL Validator — Check SQLite Syntax Online
Validate your SQLite queries before running them. This validator is preconfigured for the SQLite dialect, flagging syntax that requires specific SQLite versions and catching incompatibilities from other database engines. SQLite has a more permissive type system and a smaller feature set than PostgreSQL or SQL Server, so queries that work elsewhere may fail or behave differently in SQLite. This tool helps you catch those issues early.
What This Tool Does
Validates SQLite SQL syntax in your browser, with SQLite-specific rules like dynamic typing, permissive column affinities, and SQLite's unique AUTOINCREMENT behavior.
Who This Is For
- Mobile developers using SQLite in Android or iOS apps who want to validate schema and queries offline
- Python developers using the
sqlite3module who need a quick query check - Developers building local-first or embedded database apps with SQLite
- Data scientists using SQLite as a lightweight analysis database in Python notebooks
Example: Input: CREATE TABLE notes (id INTEGER PRIMARY KEY, body TEXT, ts DATETIME DEFAULT CURRENT_TIMESTAMP) → Output: ✓ Valid SQLite syntax — or a specific error message identifying the SQLite-incompatible construct
SQLite-Specific Validation
When the dialect is set to SQLite, the validator applies these additional checks:
RIGHT JOIN— Only supported since SQLite 3.39.0 (2022). For broader compatibility, rewrite as a LEFT JOIN with swapped tables.FULL OUTER JOIN— Also added in SQLite 3.39.0. Consider a UNION of LEFT JOIN results for older versions.ILIKE— Not supported. SQLite'sLIKEis case-insensitive for ASCII characters by default.- Standard checks — Unbalanced parentheses, unterminated strings, dangerous DELETE/UPDATE without WHERE.
SQLite Type System
SQLite uses a unique type affinity system that differs from every other major database:
- Dynamic typing — Any column can store any type of value. A column declared as
INTEGERcan hold a string. - Type affinity — SQLite assigns a type affinity (INTEGER, TEXT, BLOB, REAL, NUMERIC) based on the declared type name, but this is a preference, not a constraint.
- No native DATE or BOOLEAN — Dates are stored as TEXT, REAL, or INTEGER. Booleans are 0 and 1.
- No strict mode by default — Use
CREATE TABLE t (...) STRICT;(SQLite 3.37+) to enforce column types.
Common SQLite Limitations
- No
ALTER TABLE DROP COLUMN(before SQLite 3.35.0) - No
RIGHT JOINorFULL OUTER JOIN(before SQLite 3.39.0) - No concurrent writes — SQLite uses file-level locking
- No stored procedures or user-defined functions in SQL
- Limited
ALTER TABLE— mostly just ADD COLUMN and RENAME - No native JSON functions before SQLite 3.38.0
Use Cases for SQLite Validation
- Validate queries for mobile app databases (Android, iOS use SQLite extensively)
- Check Electron or desktop app database queries
- Validate before deploying schema changes to embedded SQLite databases
- Ensure compatibility when migrating from a server database to SQLite
- Debug queries in Python's
sqlite3module or Node.jsbetter-sqlite3
🔒 Privacy & Security
Your SQL never leaves your browser. There is no server — all parsing, validation, formatting, and explanation happens in JavaScript running locally on your device. This means your table names, column names, query logic, and data patterns are never transmitted anywhere. You can disconnect from the internet after loading this page and the tool still works.
Frequently Asked Questions
SQL Tool Suite
Related Guides & Tutorials
SQL Validation: A Complete Guide
Learn how to validate SQL before execution across PostgreSQL, MySQL, and SQL Server.
TutorialHow to Validate SQL Queries Online
Step-by-step tutorial for catching syntax errors and dialect incompatibilities.
GuideUnderstanding SQL Queries
How query explainers parse SQL to produce summaries and complexity scores.
TutorialExplain SQL in Plain English
Step-by-step tutorial for getting plain English breakdowns of any SQL query.