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create table projects ( id int, responsable varchar(50), hours int); insert into projects values (1, 'Miguel',3), (2, 'Pedro',4), (3, 'Juan',1), (4, 'Miguel',1), (5, 'Laura',1), (6, 'Laura',3), (7, 'Laura',6), (8, 'Miguel',1), (9, 'Pedro',3); create table users ( id int, name varchar(50)); insert into users values (1, 'Laura'), (2, 'Pedro'), (3, 'Juan'), (4, 'Miguel'); SELECT, SUM(projects.hours) horas FROM projects INNER JOIN users on = projects.responsable group by;
name horas
Miguel 5
Pedro 7
Juan 1
Laura 10
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