Evaluating XPath Expresssions

XPath	Result of XPath Evaluation
for $p in /planets/planet return $p/radius	<radius units="miles">1516</radius> <radius units="miles">3716</radius> <radius units="miles">2107</radius>
for $r in /planets/planet/radius return $r	<radius units="miles">1516</radius> <radius units="miles">3716</radius> <radius units="miles">2107</radius>
for $i in ('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z') return $i	a b c d e f g h i j k l m n o p q r s t u v w x y z

XPath

Result of XPath Evaluation

for $p in /planets/planet return $p/radius

<radius units="miles">1516</radius>
<radius units="miles">3716</radius>
<radius units="miles">2107</radius>

for $r in /planets/planet/radius return $r

<radius units="miles">1516</radius>
<radius units="miles">3716</radius>
<radius units="miles">2107</radius>

for $i in ('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z') return $i

a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z

The XML Document

<planets>
    <planet>
        <name>Mercury</name>
        <mass units="(Earth = 1)">.0553</mass>
        <day units="days">58.65</day>
        <radius units="miles">1516</radius>
        <density units="(Earth = 1)">.983</density>
        <distance units="millions miles">43.4</distance>
    </planet>
    <planet>
        <name>Venus</name>
        <mass units="(Earth = 1)">.815</mass>
        <day units="days">116.75</day>
        <radius units="miles">3716</radius>
        <density units="(Earth = 1)">.943</density>
        <distance units="millions miles">66.8</distance>
    </planet>
    <planet>
        <name>Earth</name>
        <name>Mother Earth</name>
        <mass units="(Earth = 1)">1</mass>
        <day units="days">1</day>
        <radius units="miles">2107</radius>
        <density units="(Earth = 1)">1</density>
        <distance units="millions miles">128.4</distance>
    </planet>
</planets>