SQL Problem Solving: Calculating Device Uptime Duration | Step-by-Step Tutorial
Join us in this SQL problem-solving session as we tackle a real-world challenge involving devices' on-off states and durations. In this tutorial, we'll use SQL's powerful CASE and GROUP BY clauses to determine the total duration for which each device was in the "ON" status. Follow along step-by-step to master these SQL techniques.
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Table creation & insertion script:
CREATE TABLE electric_items(
id int,
type varchar(20),
status varchar(20),
time_res int
);
INSERT INTO electric_items VALUES(1,'light','on',100),
(1,'light','off',110),
(2,'fan','on',80),
(2,'fan','off',120),
(1,'light','on',150),
(1,'light','off',200);
#sql #interview #groupby #case
In questa pagina del sito puoi guardare il video online SQL Problem Solving: Calculating Device Uptime Duration | Step-by-Step Tutorial della durata di ore minuti seconda in buona qualità , che l'utente ha caricato Rahul Upadhyay 14 agosto 2023, condividi il link con amici e conoscenti, su youtube questo video è già stato visto 616 volte e gli è piaciuto 35 spettatori. Buona visione!
