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SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing code.
You can run your SQL code on top of the most popular RDBMS including MySQL, MariaDB, SQLite, PostgreSQL, Oracle and Microsoft SQL Server.
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SELECT c1.customer_id AS customer_id_1, c1.first_name AS first_name_1, c1.last_name AS last_name_1, c2.customer_id AS customer_id_2, c2.first_name AS first_name_2, c2.last_name AS last_name_2 FROM customer c1, LEFT OUTER JOIN customer c2 ON c1.customer_id=c2.customer_id WHERE c1.first_name = c2.last_name ORDER BY customer_id_1 asc;
SQL
Server:
MariaDB 11.4
MariaDB 11.5
MariaDB 10
MariaDB 10 Sakila (ReadOnly)
MySQL 5.7
MySQL 5.7 Sakila (ReadOnly)
MySQL 8.0
MySQL 8.0 Sakila (ReadOnly)
SQLite 3
PostgreSQL 10 Bookings (ReadOnly)
PostgreSQL 11
PostgreSQL 12
PostgreSQL 13
PostgreSQL 14
PostgreSQL 15
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)
Oracle Database 19c (HR)
Oracle Database 21c
Oracle Database 23c Free
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