Domanda di colloquio di Delta Air Lines
Explain a SQL sub-select.
Risposta di colloquio
Anonimo
15 ago 2013
A table join can be more efficient, but a sub-select can be used when the WHERE clause needs the results of a different select criteria.
Explain a SQL sub-select.
Anonimo
A table join can be more efficient, but a sub-select can be used when the WHERE clause needs the results of a different select criteria.