substitute-empty(FirstSequence as item()*, SecondSequence as item()) as item()* XP3.1 XQ3.1
Si FirstSequence est vide, retourne SecondSequence. Si FirstSequence n'est pas vide, retourne FirstSequence.
•substitute-empty( (1,2,3), (4,5,6) ) retourne (1,2,3) •substitute-empty( (), (4,5,6) ) retourne (4,5,6) |
|
