
SQL_Join's
Authored by Saúl De Lira
Computers
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La cláusula Join en lenguaje SQL sirve para:
Ordenar datos
Sumar datos
Agrupar datos
Relacionar tablas
Answer explanation
Permite realizar consultas sobre dos o más tablas
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una consulta de SQL que utiliza Joins, puede relacionar máximo dos tablas
Verdadero
Falso
Answer explanation
Una consulta SQL que utiliza joins pude relacionar de dos o más tablas
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
¿Que SQL Join regresa los registros coincidentes de la tabla 1 con la tabla 2, así como los registros de la tabla 1 que no coinciden con la tabla 2?
Answer explanation
El left outer join es un tipo de join que nos regresa además de los registros concidentes, aquellos que no coinciden del lado izquierdo (tabla 1) con el lado derecho(tabla2)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El full outer join incluye el resultado de:
Left e Inner Outer Join
Right e Inner Outer join
Left, Right e Inner Outer Join
Cross Join
Answer explanation
El full outer join incluye los registros que coinciden de la tabla 1 y la tabla 2, los registros que no coinciden de la izquierda y los que no coinciden de la derecha
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de join representa?
left outer join
full outer join
right outer join
inner join
Answer explanation
Representa un right outer join y que obtenemos la tabla de la derecha(registros que coinciden en las tablas y los que no coinciden de la tabla derecha con la tabla izquierda izquierda)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de join representa?
left outer join
full outer join
right outer join
inner join
Answer explanation
Representa un inner join ya que obtiene los registros que coinciden de la tabla 1 y tabla 2 (Intersección)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué tipo de join representa?
left outer join
full outer join
right outer join
inner join
Answer explanation
Representa un full outer join ya que obtiene los registros que coinciden de la tabla 1 y tabla 2, los que no coinciden de l tabla 1 con la tabla 2 y los que no coinciden de la tabla 2 con la tabla 1
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