
quiz_20240727_1
Authored by ramon vargas
Instructional Technology
Professional Development
Used 4+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el objetivo principal de las tablas particionadas en Impala?
Almacenar datos en formato no estructurado.
Dividir una tabla grande en partes más pequeñas para mejorar el rendimiento.
Realizar operaciones de unión complejas entre tablas.
Controlar el acceso a la base de datos.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1.¿Cual de estos campos nos indica las particiones?
ingestion_year
,ingestion_month
anio, mes
year, month
partition_year,
partition_month
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determina si el valor de una expresión está dentro de un intervalo de valores especificado.
rango 1 and 2
in(1,3)
between (1 , 3)
between 1 and 3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Permite agrupar los datos y usar funciones para sumar, promedio, otros.
distinct
group with
group by
distinct by
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tengo acceso a una tabla y es la voy a usar pero no conozco la tabla, ¿Cúal es el primer paso que debo hacer?
Llamar al equipo de Ramón
select * from nombre_tabla;
EXPLAIN select * from tabla;
select * from tabla limit 10;
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cláusula que me permite saber el consumo lógico de una consulta
show
explain
describe
explicar
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el propósito de utilizar la cláusula DISTINCT en una consulta SQL?
Ordenar las filas de la tabla en orden descendente.
Obtener valores únicos de una columna específica en el resultado de la consulta.
Filtrar las filas basándose en múltiples condiciones.
Se duplican todas las filas de la tabla.
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