Question 1

How do I convert MySQL SQL to PostgreSQL online for free?

Accepted Answer

Visit the SQL Dialect Converter at SQLFormat.io. Paste your MySQL SQL in the input area, select 'MySQL' as the source and 'PostgreSQL' as the target, then click Convert. The tool automatically handles AUTO_INCREMENT to SERIAL, backtick quotes to double-quote identifiers, CONCAT() to ||, IFNULL() to COALESCE(), DATE_FORMAT() to TO_CHAR(), GROUP_CONCAT() to STRING_AGG(), and INSERT IGNORE to ON CONFLICT DO NOTHING. No signup required, all processing happens in your browser.

Question 2

What SQL syntax differences does the converter handle between MySQL and PostgreSQL?

Accepted Answer

The converter handles 40+ differences: AUTO_INCREMENT to SERIAL/BIGSERIAL, backtick to double-quote quoting, CONCAT() to || operator, IFNULL() to COALESCE(), DATE_FORMAT() to TO_CHAR(), GROUP_CONCAT() to STRING_AGG(), INSERT IGNORE to ON CONFLICT DO NOTHING, IF() to CASE WHEN, LENGTH() to CHAR_LENGTH(), CURDATE() to CURRENT_DATE, LIMIT a,b to LIMIT b OFFSET a, ENGINE/CHARSET removal, ON UPDATE CURRENT_TIMESTAMP removal, TINYINT to BOOLEAN, and ENUM to VARCHAR with CHECK constraints.

Question 3

Can I convert PostgreSQL or MySQL to SQLite?

Accepted Answer

Yes. The converter supports all 6 conversion directions: MySQL to PostgreSQL, PostgreSQL to MySQL, MySQL to SQLite, SQLite to MySQL, PostgreSQL to SQLite, and SQLite to PostgreSQL. For SQLite specifically, it handles AUTO_INCREMENT to AUTOINCREMENT, NOW() to DATETIME('now'), CURRENT_TIMESTAMP to DATETIME('now'), ENGINE/CHARSET removal, CONCAT() to ||, and INSERT IGNORE to INSERT OR IGNORE.

Question 4

Is this SQL dialect converter safe for sensitive queries?

Accepted Answer

Completely safe. All conversion happens locally in your browser using JavaScript. Your SQL queries never leave your device and are never sent to any server. There's no data logging, no analytics tracking of your query content, and no signup required. It works the same way as our SQL Formatter — private by design.

Question 5

Do I need to know both dialects to use this converter?

Accepted Answer

No. Just paste your SQL from the source database, select source and target dialects, and the tool does the rest. It's designed for developers migrating between databases who don't want to memorize every syntax difference. The conversion count tells you exactly how many changes were applied, so you can review the output with confidence.

Feature	MySQL	PostgreSQL	SQLite
Auto-increment	`AUTO_INCREMENT`	`SERIAL` / `GENERATED AS IDENTITY`	`AUTOINCREMENT`
Identifier quotes	`backtick`	`"double-quote"`	Any
String concat	`CONCAT(a, b)`	`a \|\| b`	`a \|\| b`
Null handling	`IFNULL(a, b)`	`COALESCE(a, b)`	`IFNULL(a, b)`
Current time	`NOW()`	`CURRENT_TIMESTAMP`	`DATETIME('now')`
Date format	`DATE_FORMAT()`	`TO_CHAR()`	`STRFTIME()`
Group concat	`GROUP_CONCAT()`	`STRING_AGG()`	`GROUP_CONCAT()`
Case-insensitive	`LIKE`	`ILIKE`	`LIKE`
Type cast	—	`::type`	—
Insert conflict	`INSERT IGNORE`	`ON CONFLICT DO NOTHING`	`INSERT OR IGNORE`
Ternary	`IF(cond, t, f)`	`CASE WHEN`	`CASE WHEN`
Boolean type	`TINYINT`	`BOOLEAN`	`INTEGER`
Enum type	`ENUM('a','b')`	`VARCHAR + CHECK`	`TEXT`
Storage engine	`ENGINE=InnoDB`	Removed	Removed

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