Esempio calcolo differenza di tabelle tra ambiente di collaudo e ed esercizio, accedendo alla tabella del dizionario dati dba_tables.
In questo caso il secondo schema viene raggiunto attraverso un database link precedentemente
creato (@ESERCIZIO).
L'istruzione di minus visualizza tutte le righe che sono presenti solo nella prima select.
select OBJECT_NAME from dba_tables WHERE OWNER = 'COLLAUDO'
minus
select OBJECT_NAME from dba_tables@ESERCIZIO WHERE OWNER = 'ESERCIZIO'
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A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson
A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson
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Nicoleta e Marco Magnani tutorial, examples, courses, esempi, corsi, esercizi, appunti vari Dottoressa Nicoleta Dragu Formatrice Docente Insegnante Mediatrice Culturale
Dott. Marco Magnani Universita La Sapienza Roma Master Computer Science Hunter College New York , Data Base Administrator DBA oracle System architect