
Operaciones con conjuntos PostgreSQL
Authored by P Sánchez
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Professional Development
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En operaciones de conjunto en PostgresSQL, cada consulta debe retornar la misma cantidad de columnas y del mismo tipo de dato.
Verdadero
Falso
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En operaciones de conjunto en PostgresSQL no se puede usar el order by.
Verdadero
Falso
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las operaciones de conjunto en PostgresSQL se puede utilizar para construir un solo reporte que consolide un solo resultado desde diversas fuentes.
Verdadero
Falso
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une distintas consultas, SÍ muestra los registros duplicados.
UNION ALL
UNION
INTERSECT
EXCEPT
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une distintas consultas, NO muestra los registros duplicados.
UNION ALL
UNION
INTERSECT
EXCEPT
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une distintas consultas, retorna únicamente los registros que son duplicados.
UNION ALL
UNION
INTERSECT
EXCEPT
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une distintas columnas, y solo muestra los registros de A y no los de B.
UNION ALL
UNION
INTERSECT
EXCEPT
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