https://juanpacheco.netlify.app/tags/join/ Recent content in JOIN on Juan Pacheco Hugo -- gohugo.io en-us Tue, 01 Mar 2022 00:00:00 +0000 https://juanpacheco.netlify.app/post/sql/ Tue, 01 Mar 2022 00:00:00 +0000 https://juanpacheco.netlify.app/post/sql/ SQL SQL - CONCAT FUNCTION SELECT usertype, CONCAT(start_station_name, "to", end_station_name) AS route, COUNT(*) AS num_trip, ROUND(AVG(CAST(tripduration as int64)/60),2) AS duration, FROM `bigquery-public-data.new_york.citibike_trips` GROUP BY start_station_name, end_station_name, usertype ORDER BY num_trip DESC LIMIT 10 Function Usage Example CONCAT A function that adds strings together to create new text strings that can be used as unique keys CONCAT (‘Google’, ‘.com’); CONCAT_WS A function that adds two or more strings together with a separator CONCAT_WS (‘ .