Pregunta de entrevista de Fugro
Write a SQL query to count distinct values from each sensor. Database was PostgreSQL.
Respuesta de la entrevista
Anónimo
17 de mar de 2018
It was also easy, I solved using DISTINCT and GROUP BY.
Write a SQL query to count distinct values from each sensor. Database was PostgreSQL.
Anónimo
It was also easy, I solved using DISTINCT and GROUP BY.