open source listesi
güzel guruplanmış bir biçimde açık kaynak listesi buldum. bir yerlerde tutmakda fayda var bazen arasanda bulunmuyor böyle şeyler.
Postgresql group by day, week and month examples
at the end of any product there will be a reporting interfaces for counts. let say you build a advertisement site which gives people to publish their products on the site. they will want to see how many people visited their product in daily basis or weekly. I used to do this in mysql like this SELECT create_time as Date, count(id) as 'Count', FROM views_of_product group by date_format(create_time, '%d %m %Y') order by date_format(create_time, '%Y-%m-%d') desc limit 7 this will nicely show last seven days views. but I needed to do same thing in postgresql. and like other days its not easily to find. I should check other report codes from project but no I allways research on google :) anyway here is my code: select to_char(created, 'YYYY-MM-DD') ,count(id) from videos_capture group by to_char(created, 'YYYY-MM-DD') order by to_char(created, 'YYYY-MM-DD') desc limit 7 its not bad actually works like a charm but understanding this
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