Consultas SQL
Quiz
•
Computers
•
12th Grade
•
Practice Problem
•
Medium
Heidy Mancilla
Used 7+ times
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21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Qué instrucción se utiliza para seleccionar datos de una tabla?
FETCH
SELECT
GET
RETRIEVE
2.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Cómo se puede filtrar resultados en una consulta SQL?
Se utiliza la cláusula SELECT.
Se utiliza la cláusula GROUP BY.
Se utiliza la cláusula WHERE.
Se utiliza la cláusula JOIN.
3.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Qué palabra clave se usa para actualizar registros en una tabla?
DELETE
SELECT
UPDATE
INSERT
4.
MULTIPLE SELECT QUESTION
20 sec • 2 pts
¿Cuál es la sintaxis básica de una consulta SELECT?
SELECT column1, column2;
FROM table_name WHERE condition;
SELECT column1, column2 FROM table_name WHERE condition;
SELECT * FROM table_name;
5.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Qué operador se utiliza en la cláusula WHERE para comparar valores?
Operadores lógicos como 'AND', 'OR', 'NOT'.
Funciones de agregación como 'SUM', 'AVG', 'COUNT'.
Cláusulas de unión como 'JOIN', 'INNER JOIN', 'LEFT JOIN'.
Operadores de comparación como '=', '>', '<', '>=', '<=', '!='.
6.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Cómo se actualiza un campo específico en una tabla?
Emplear la sentencia SQL DELETE para eliminar un campo específico.
Usar la sentencia SQL UPDATE con la sintaxis: UPDATE nombre_tabla SET campo = nuevo_valor WHERE condicion;
Usar la sentencia SQL SELECT para modificar datos.
Utilizar la sentencia SQL INSERT para agregar un nuevo campo.
7.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
¿Qué función se puede usar para contar el número de filas en una consulta?
COUNT()
SUM()
AVG()
MAX()
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