
SQL: operadores
Authored by Daniela Anfuso
Instructional Technology
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué palabra clave se utiliza en SQL para ordenar el conjunto de resultados?
ORDER BY
ORDER
SORT
SORT BY
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Con SQL, ¿cómo se pueden devolver todos los registros de una tabla llamada "Personas" ordenados de forma descendente por "Nombre de pila"?
SELECT * FROM Personas SORT 'nombre' DESC
SELECT * FROM Personas SORT BY 'nombre' DESC
SELECT * FROM Personas ORDER BY Nombre DESC
SELECT * FROM Personas ORDER Nombre DESC
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Con SQL, ¿cómo se puede insertar "Martinez" como "Apellido" en la tabla "Personas"?
INSERT INTO Personas ('Martinez') INTO Apellido
INSERT ('Martinez') INTO Personas (Apellido)
INSERT INTO Personas (Apellido) VALUES ('Martinez')
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cómo se puede cambiar "Martinez" por "Lopez" en la columna "Apellido" de la tabla Personas?
MODIFY Personas SET Apellido='Martinez' INTO Apellido='Lopez'
UPDATE Personas SET Apellido='Lopez' WHERE Apellido='Martinez'
MODIFY Personas SET Apellido='Lopez' WHERE Apellido='Martinez'
UPDATE Personas SET Apellido='Martinez' INTO Apellido='Lopez'
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Con SQL, ¿cómo se puede devolver el número de registros en la tabla "Personas"?
SELECT NO(*) FROM Personas
SELECT COLUMNS(*) FROM Personas
SELECT COUNT(*) FROM Personas
SELECT LEN(*) FROM Personas
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Con SQL, ¿cómo se seleccionan todos los registros de una tabla llamada "Personas" donde el valor de la columna "Nombre" es "Pedro"?
SELECT * FROM Personas WHERE Nombre='Pedro'
SELECT [all] FROM Personas WHERE Nombre='Pedro'
SELECT * FROM Personas WHERE Nombre<>'Pedro'
SELECT [all] FROM Personas WHERE Nombre LIKE 'Pedro'
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El operador O muestra un registro si CUALQUIER condición enumerada es verdadera. El operador AND muestra un registre si TODAS las condiciones enumeradas son verdaderas
TRUE
FALSE
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