
Examen de SQL
Authored by Francisco Martinez
Computers
1st Grade
Used 1+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la consulta correcta para obtener todos los registros de la tabla empleados?
SELECT ALL FROM empleados;
SELECT * FROM empleados;
GET * FROM empleados;
SELECT EMPLOYEES FROM empleados;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cómo se filtran los registros de la tabla empleados con un salario mayor a 5000?
SELECT * FROM empleados WHERE salario > 5000;
SELECT * FROM empleados AND salario > 5000;
SELECT * FROM empleados WHERE salario < 5000;
SELECT * FROM empleados WHERE salario != 5000;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué operador usarías para combinar dos condiciones con ambas siendo verdaderas?
AND
OR
NOT
BETWEEN
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cómo ordenar los resultados de la tabla empleados por salario en orden descendente?
SELECT * FROM empleados ORDER BY salario ASC;
SELECT * FROM empleados ORDER BY salario;
SELECT * FROM empleados ORDER BY salario DESC;
SELECT * FROM empleados ORDER BY salario DASC;
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué hace la cláusula LIMIT 5 en una consulta SQL?
Limita el número de columnas mostradas.
Limita el número de filas mostradas a 5.
Limita el tamaño de la base de datos.
Limita el número de registros insertados.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué función de agregación cuenta la cantidad de registros en una tabla?
SUM()
AVG()
COUNT()
MIN()
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cómo agruparías los registros de la tabla empleados por departamento?
SELECT * FROM empleados GROUP DEPARTMENT BY departamento;
SELECT * FROM empleados GROUP BY departamento;
SELECT * FROM empleados ORDER BY departamento;
SELECT * FROM empleados GROUP BY salario;
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