Convert MySQL to MariaDB
A free online converter that translates MySQL queries into MariaDB. Paste your SQL, press Translate, and Query Studio rewrites the syntax that differs between the two databases — instantly, with no login and nothing stored.
The most compatible pair here by a wide margin — MariaDB began as a MySQL fork and remains a drop-in replacement for ordinary queries. Translating usually returns your query nearly unchanged, and that is the right answer. The differences that do exist are in JSON storage, sequences, and features each has added since the fork.
MySQL → MariaDB example
Here is a real MySQL query and the MariaDB output Query Studio produces:
SELECT u.id, u.name, COUNT(o.id) AS orders
FROM users u
LEFT JOIN orders o ON o.user_id = u.id
WHERE u.created_at > '2024-01-01' AND u.active = 1
GROUP BY u.id, u.name
HAVING COUNT(o.id) > 3
ORDER BY orders DESC
LIMIT 10;SELECT
u.id,
u.name,
COUNT(o.id) AS orders
FROM
users u
LEFT JOIN orders o ON o.user_id = u.id
WHERE
u.created_at > '2024-01-01'
AND u.active = 1
GROUP BY
u.id,
u.name
HAVING
COUNT(o.id) > 3
ORDER BY
orders DESC
LIMIT
10;What changes from MySQL to MariaDB
- The result is re-indented and keyword-cased in MariaDB style so it's ready to paste and run.
MySQL to MariaDB data type mapping
Query Studio translates queries, not schemas. When you come to move the tables themselves, this is what changes between MySQL and MariaDB:
| MySQL | MariaDB | Watch out for |
|---|---|---|
| Everything | Everything | MariaDB is a fork of MySQL and the types are the same. This pair is about the small number of places they have diverged since 2009, not about type conversion. |
MySQL to MariaDB: what actually catches people out
Syntax is the part a translator can fix. These are the differences that survive a clean conversion and show up later as wrong results rather than as errors.
This one is mostly a no-op, and that is the honest answer
MariaDB forked from MySQL in 2009 and remains a drop-in replacement for the overwhelming majority of queries. Standard SELECT, INSERT, UPDATE and DELETE need no changes at all. If your query is not using something recent and vendor-specific, translating it will return it essentially unchanged — which is the correct result, not a failure.
Where they have actually diverged
JSON is the big one: MySQL 5.7+ has a native binary JSON type, while MariaDB's JSON is an alias for LONGTEXT with a CHECK constraint — same functions, different storage and different performance. MariaDB has sequences, SQL:2011 system-versioned tables and RETURNING on INSERT/DELETE, none of which MySQL has. MySQL has CHECK constraint enforcement from 8.0.16, a different GTID implementation, and its own window function quirks. Replication between the two is no longer supported in either direction.
Password authentication plugins differ
MySQL 8 defaults to caching_sha2_password; MariaDB uses mysql_native_password or ed25519. This is not a query problem but it is the first thing that breaks when an application points at the other server, so it is worth knowing before you conclude the SQL is at fault.
What this converter will not do
Query Studio translates SQL syntax. Being honest about the boundary is more useful than claiming there isn’t one — and on MySQL → MariaDB specifically, these are the three that matter most:
Vendor-specific extensions
PostGIS geometry, MySQL spatial functions, SQL Server's FOR XML and hierarchyid, BigQuery's nested/repeated model, Snowflake's time travel. Where there is no equivalent concept, there is no translation — only a redesign.
Stored procedures, functions and triggers
Procedural code — PL/pgSQL, T-SQL procedures, MySQL routines — is a different language in every engine, with different control flow, error handling, variable declaration and transaction semantics. Query Studio translates queries, not programs. These have to be ported by hand.
Anything that depends on data rather than syntax
Whether a value fits the target type, whether a date is real, whether a text column's contents are valid UTF-8 — none of that is visible in the query. A translation can be syntactically perfect and still fail on the first row of the import.
The full list of what a syntax translator cannot do is on the Query Studio page.
How to convert MySQL to MariaDB
- Open the Query Studio editor and choose MySQL as the “From” dialect.
- Choose MariaDB as the “To” dialect.
- Paste your MySQL query and press Translate — copy the MariaDB result.
Try it with your own query
The editor is preloaded with MySQL → MariaDB. You can also explain, format, validate and analyze the result.
Convert MySQL to MariaDB now →Working with the data rather than the schema? Open a large CSV, JSON or Parquet file and query it with SQL — no upload, no row limit, and files far past what Excel will open.
MySQL to MariaDB FAQ
Is this MySQL to MariaDB converter free?
Yes — it's completely free with no account, no sign-up and no usage limits. Your query is processed to return the result and never stored.
Is the MySQL to MariaDB conversion accurate?
Query Studio rewrites syntax deterministically using real SQL parsers, so it gives the same result every time — there is no AI involved and no variation between runs. It handles the differences listed above automatically. What it cannot do is anything semantic: stored procedures, triggers, vendor extensions and performance characteristics all need a human. Review complex, vendor-specific queries before running them in production.
What breaks when migrating from MySQL to MariaDB?
The differences that most often cause problems on this pair: This one is mostly a no-op, and that is the honest answer; Where they have actually diverged; Password authentication plugins differ. Each is explained in full above, with before-and-after examples where seeing it is quicker than reading about it.
Does this MySQL to MariaDB converter use AI?
No. Every result is computed by real SQL parsers and rule engines, which is what makes it free, instant, unlimited and identical on every run. Nothing is sent to a model, so there are no rate limits, no per-request cost to pass on, and no possibility of a confidently wrong answer that looks plausible.