SQLize
Online
/
PHPize Online
/
SQLtest Online
A
A
A
Share
Donate
Blog
Popular
Donate
A
A
A
Share
Blog
Popular
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.
SQL code:
Upload
Copy
Format
Clear
-- Preparation: Drop the index if it exists to ensure clean testing DROP INDEX IF EXISTS idx_title ON film; -- Step 1: Explain the query without an index on `title` EXPLAIN SELECT * FROM film WHERE title = 'ALONE TRIP'; -- Step 2: Create an index on the `title` column CREATE INDEX idx_title ON film(title); -- Step 3: Explain the query again to observe index usage EXPLAIN SELECT * FROM film WHERE title = 'ALONE TRIP'; -- Step 4: Explain a query that uses a `title` range condition (`title > 'ALONE TRIP'`) EXPLAIN SELECT * FROM film WHERE title > 'ALONE TRIP'; -- Step 5: Explain a query that groups by `rating` without an index EXPLAIN SELECT rating, COUNT(*) FROM film GROUP BY rating; -- Step 6: Create an index on the `rating` column CREATE INDEX idx_rating ON film(rating); -- Step 7: Explain the query from Step 5 again to see index usage on `rating` EXPLAIN SELECT rating, COUNT(*) FROM film GROUP BY rating;
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
SQLite 3 Preloaded
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
SOQOL
Version
ER Diagram
Preserve result
Stuck with a problem?
Got Error?
Ask ChatGPT!
Result:
Copy
Clear