Hi! Could we please enable some services and cookies to improve your experience and our website?

SQLize | PHPize | SQLtest

Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code

A A A
Login    Share code      Blog   FAQ
Copy Format Clear
/* ΠšΠ°Ρ‚Π΅Π³Ρ€ΠΎΠΈΡ 1: подкатСгория 2 подкатСгрия 3 ΠšΠ°Ρ‚Π΅Π³ΠΎΡ€ΠΈΡ 2 подкатСгория 1 подкатСгория 4 */ CREATE TABLE category ( id int, title varchar(255), PRIMARY KEY(id) ); INSERT INTO category VALUES (1, 'ΠšΠ°Ρ‚Π΅Π³Ρ€ΠΎΠΈΡ 1'), (2, 'ΠšΠ°Ρ‚Π΅Π³ΠΎΡ€ΠΈΡ 2'); CREATE TABLE subcategory ( id int, title varchar(255), category_id INTEGER REFERENCES category (id), PRIMARY KEY(id) ); INSERT INTO subcategory VALUES (2, 'подкатСгория 2', 1), (3, 'подкатСгория 3', 1), (1, 'подкатСгория 1', 2), (4, 'подкатСгория 4', 2); SELECT category.id, category.title, ARRAY_AGG(subcategory.title) FROM category JOIN subcategory ON subcategory.category_id = category.id GROUP BY category.id, category.title;

Stuck with a problem? Got Error? Ask AI support!

Copy Clear
Have a question? Ask in our telegram chat!
Contact us:
Β© 2025 Free Online SQL Playground: Practice & Master SQL Skills | About project | Privacy Policy and Disclaimer
The site powered by: Contabo
PHP versions: PHP 7.4, PHP 8.0, PHP 8.1, PHP 8.2, PHP 8.3, PHP 8.4
RDBMS versions: MySQL 8.0, MySQL 8.0 Sakila (ReadOnly), MySQL 9.3.0, MariaDB 11.4, MariaDB 11.8, MariaDB 11.8 OpenFlights (ReadOnly), MariaDB 10, MariaDB 10 Sakila (ReadOnly), SQLite 3, SQLite 3 Preloaded, PostgreSQL 10 Bookings (ReadOnly), PostgreSQL 13, PostgreSQL 14, PostgreSQL 15, PostgreSQL 16, PostgreSQL 17 + PostGIS, PostgreSQL 17 + PostGIS WorkShop (ReadOnly), MS SQL Server 2017, MS SQL Server 2019, MS SQL Server 2022, MS SQL Server 2022 AdventureWorks (ReadOnly), Firebird 4.0, Firebird 4.0 (Employee), Firebird 5.0, RedDatabase 5.0, Oracle Database 19c (HR), Oracle Database 21c, Oracle Database 26ai, SOQOL, ClickHouse