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

SQLize Online / PHPize Online  /  SQLtest Online

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.

Copy Format Clear
create table events ( id serial, user_id int, event_type varchar, event_time timestamp ); insert into events (user_id, event_type, event_time) values (1, 'display', now()), (1, 'display', now()),(1, 'click', now()),(1, 'display', now()), (2, 'display', now()), (2, 'click', now()); select clicks.user_id, count(display.id) from events clicks left join events display on display.user_id = clicks.user_id and display.event_type = 'display' and display.id < clicks.id -- should be changed to time comparsion where clicks.event_type = 'click' group by clicks.user_id

Stuck with a problem? Got Error? Ask ChatGPT!

Copy Clear