SQL · Theory

MariaDB vs MySQL

Theory

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MariaDB vs MySQL

MariaDB started as a fork of MySQL after Oracle bought MySQL. Beginner SQL looks the same: tables, SELECT, JOIN. They are not the same product now — versions and extras differ. XAMPP often ships MariaDB while people still say MySQL. SELECT VERSION(); tells you which one you have.

Trap — copying a MySQL 8-only feature into MariaDB without checking. Trap: ‘they are 100% identical’.

On the example next to this theory: MariaDB vs MySQL: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Exam tip

Fork of MySQL. Same beginner SQL. Check VERSION().

MariaDB vs MySQL — sample query

-- MariaDB vs MySQL
CREATE TABLE demo (
  id INTEGER PRIMARY KEY,
  label TEXT NOT NULL,
  qty INTEGER DEFAULT 0
);
INSERT INTO demo (id, label, qty) VALUES
  (1, 'alpha', 2),
  (2, 'beta', 5);
SELECT label, qty FROM demo WHERE qty >= 2 ORDER BY qty DESC;

MariaDB vs MySQL: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Short notes

DefMariaDB is a MySQL fork. Similar SQL, not identical.
RuleSELECT VERSION() to see which you installed.
TrapAssuming every MySQL 8 feature exists in MariaDB.

-- MariaDB vs MySQL CREATE TABLE demo ( id INTEGER PRIMARY KEY, label TEXT NOT NULL, qty INTEGER DEFAULT 0 ); INSERT INTO demo (id, label, qty) VALUES (1, 'alpha', 2), (2, 'beta', 5); SELECT label, qty FROM demo WHERE qty >= 2 ORDER BY qty DESC;

MariaDB vs MySQL

MariaDB vs MySQL — sample query

Short notes

Questions

MariaDB vs MySQL

MariaDB vs MySQL — sample query

Short notes

Questions