SET @xml='<a aa1="aa1" aa2="aa2">a1<b ba1="ba1">b1<c>c1</c>b2</b>a2</a>';
SELECT extractValue(@xml,'/a');
extractValue(@xml,'/a')
a1 a2
SELECT extractValue(@xml,'/a/b');
extractValue(@xml,'/a/b')
b1 b2
SELECT extractValue(@xml,'/a/b/c');
extractValue(@xml,'/a/b/c')
c1
SELECT extractValue(@xml,'/a/@aa1');
extractValue(@xml,'/a/@aa1')
aa1
SELECT extractValue(@xml,'/a/@aa2');
extractValue(@xml,'/a/@aa2')
aa2
SELECT extractValue(@xml,'/a/@*');
extractValue(@xml,'/a/@*')
aa1 aa2
SELECT extractValue(@xml,'//@ba1');
extractValue(@xml,'//@ba1')
ba1
SELECT extractValue(@xml,'//a');
extractValue(@xml,'//a')
a1 a2
SELECT extractValue(@xml,'//b');
extractValue(@xml,'//b')
b1 b2
SELECT extractValue(@xml,'//c');
extractValue(@xml,'//c')
c1
SELECT extractValue(@xml,'/a//b');
extractValue(@xml,'/a//b')
b1 b2
SELECT extractValue(@xml,'/a//c');
extractValue(@xml,'/a//c')
c1
SELECT extractValue(@xml,'//*');
extractValue(@xml,'//*')
a1 b1 c1 b2 a2
SELECT extractValue(@xml,'/a//*');
extractValue(@xml,'/a//*')
b1 c1 b2
SELECT extractValue(@xml,'/./a');
extractValue(@xml,'/./a')
a1 a2
SELECT extractValue(@xml,'/a/b/.');
extractValue(@xml,'/a/b/.')
b1 b2
SELECT extractValue(@xml,'/a/b/..');
extractValue(@xml,'/a/b/..')
a1 a2
SELECT extractValue(@xml,'/a/b/../@aa1');
extractValue(@xml,'/a/b/../@aa1')
aa1
SELECT extractValue(@xml,'/*');
extractValue(@xml,'/*')
a1 a2
SELECT extractValue(@xml,'/*/*');
extractValue(@xml,'/*/*')
b1 b2
SELECT extractValue(@xml,'/*/*/*');
extractValue(@xml,'/*/*/*')
c1
SELECT extractValue(@xml,'/a/child::*');
extractValue(@xml,'/a/child::*')
b1 b2
SELECT extractValue(@xml,'/a/self::*');
extractValue(@xml,'/a/self::*')
a1 a2
SELECT extractValue(@xml,'/a/descendant::*');
extractValue(@xml,'/a/descendant::*')
b1 c1 b2
SELECT extractValue(@xml,'/a/descendant-or-self::*');
extractValue(@xml,'/a/descendant-or-self::*')
a1 b1 c1 b2 a2
SELECT extractValue(@xml,'/a/attribute::*');
extractValue(@xml,'/a/attribute::*')
aa1 aa2
SELECT extractValue(@xml,'/a/b/c/parent::*');
extractValue(@xml,'/a/b/c/parent::*')
b1 b2
SELECT extractValue(@xml,'/a/b/c/ancestor::*');
extractValue(@xml,'/a/b/c/ancestor::*')
a1 b1 b2 a2
SELECT extractValue(@xml,'/a/b/c/ancestor-or-self::*');
extractValue(@xml,'/a/b/c/ancestor-or-self::*')
a1 b1 c1 b2 a2
SELECT extractValue(@xml,'/descendant-or-self::*');
extractValue(@xml,'/descendant-or-self::*')
a1 b1 c1 b2 a2
SET @xml='<a>a11<b ba="ba11" ba="ba12">b11</b><b ba="ba21" ba="ba22">b21<c>c1</c>b22</b>a12</a>';
SELECT extractValue(@xml,'/a/b/c/ancestor-or-self::*');
extractValue(@xml,'/a/b/c/ancestor-or-self::*')
a11 b21 c1 b22 a12
SELECT extractValue(@xml,'//@ba');
extractValue(@xml,'//@ba')
ba11 ba12 ba21 ba22
SET @xml='<a><b>b</b><c>c</c></a>';
SELECT extractValue(@xml,'/a/b');
extractValue(@xml,'/a/b')
b
SELECT extractValue(@xml,'/a/c');
extractValue(@xml,'/a/c')
c
SELECT extractValue(@xml,'/a/child::b');
extractValue(@xml,'/a/child::b')
b
SELECT extractValue(@xml,'/a/child::c');
extractValue(@xml,'/a/child::c')
c
SET @xml='<a><b>b1</b><c>c1</c><b>b2</b><c>c2</c></a>';
SELECT extractValue(@xml,'/a/b[1]');
extractValue(@xml,'/a/b[1]')
b1
SELECT extractValue(@xml,'/a/b[2]');
extractValue(@xml,'/a/b[2]')
b2
SELECT extractValue(@xml,'/a/c[1]');
extractValue(@xml,'/a/c[1]')
c1
SELECT extractValue(@xml,'/a/c[2]');
extractValue(@xml,'/a/c[2]')
c2
SET @xml='<a><b x="xb1" x="xb2"/><c x="xc1" x="xc2"/></a>';
SELECT extractValue(@xml,'/a//@x');
extractValue(@xml,'/a//@x')
xb1 xb2 xc1 xc2
SELECT extractValue(@xml,'/a//@x[1]');
extractValue(@xml,'/a//@x[1]')
xb1 xc1
SELECT extractValue(@xml,'/a//@x[2]');
extractValue(@xml,'/a//@x[2]')
xb2 xc2
SET @xml='<a><b>b1</b><b>b2</b><c><b>c1b1</b><b>c1b2</b></c><c><b>c2b1</c></b>/a>';
SELECT extractValue(@xml,'//b[1]');
extractValue(@xml,'//b[1]')
b1 c1b1 c2b1
SELECT extractValue(@xml,'/descendant::b[1]');
extractValue(@xml,'/descendant::b[1]')
b1
SET @xml='<a><b>b1</b><b>b2</b></a>';
SELECT extractValue(@xml,'/a/b[1+0]');
extractValue(@xml,'/a/b[1+0]')
b1
SELECT extractValue(@xml,'/a/b[1*1]');
extractValue(@xml,'/a/b[1*1]')
b1
SELECT extractValue(@xml,'/a/b[--1]');
extractValue(@xml,'/a/b[--1]')
b1
SELECT extractValue(@xml,'/a/b[2*1-1]');
extractValue(@xml,'/a/b[2*1-1]')
b1
SELECT extractValue(@xml,'/a/b[1+1]');
extractValue(@xml,'/a/b[1+1]')
b2
SELECT extractValue(@xml,'/a/b[1*2]');
extractValue(@xml,'/a/b[1*2]')
b2
SELECT extractValue(@xml,'/a/b[--2]');
extractValue(@xml,'/a/b[--2]')
b2
SELECT extractValue(@xml,'/a/b[1*(3-1)]');
extractValue(@xml,'/a/b[1*(3-1)]')
b2
SELECT extractValue(@xml,'//*[1=1]');
extractValue(@xml,'//*[1=1]')
b1 b2
SELECT extractValue(@xml,'//*[1!=1]');
extractValue(@xml,'//*[1!=1]')

SELECT extractValue(@xml,'//*[1>1]');
extractValue(@xml,'//*[1>1]')

SELECT extractValue(@xml,'//*[2>1]');
extractValue(@xml,'//*[2>1]')
b1 b2
SELECT extractValue(@xml,'//*[1>2]');
extractValue(@xml,'//*[1>2]')

SELECT extractValue(@xml,'//*[1>=1]');
extractValue(@xml,'//*[1>=1]')
b1 b2
SELECT extractValue(@xml,'//*[2>=1]');
extractValue(@xml,'//*[2>=1]')
b1 b2
SELECT extractValue(@xml,'//*[1>=2]');
extractValue(@xml,'//*[1>=2]')

SELECT extractValue(@xml,'//*[1<1]');
extractValue(@xml,'//*[1<1]')

SELECT extractValue(@xml,'//*[2<1]');
extractValue(@xml,'//*[2<1]')

SELECT extractValue(@xml,'//*[1<2]');
extractValue(@xml,'//*[1<2]')
b1 b2
SELECT extractValue(@xml,'//*[1<=1]');
extractValue(@xml,'//*[1<=1]')
b1 b2
SELECT extractValue(@xml,'//*[2<=1]');
extractValue(@xml,'//*[2<=1]')

SELECT extractValue(@xml,'//*[1<=2]');
extractValue(@xml,'//*[1<=2]')
b1 b2
SET @xml='<a><b>b11<c>c11</c></b><b>b21<c>c21</c></b></a>';
SELECT extractValue(@xml,'/a/b[c="c11"]');
extractValue(@xml,'/a/b[c="c11"]')
b11
SELECT extractValue(@xml,'/a/b[c="c21"]');
extractValue(@xml,'/a/b[c="c21"]')
b21
SET @xml='<a><b c="c11">b11</b><b c="c21">b21</b></a>';
SELECT extractValue(@xml,'/a/b[@c="c11"]');
extractValue(@xml,'/a/b[@c="c11"]')
b11
SELECT extractValue(@xml,'/a/b[@c="c21"]');
extractValue(@xml,'/a/b[@c="c21"]')
b21
SET @xml='<a>a1<b c="c11">b11<d>d11</d></b><b c="c21">b21<d>d21</d></b></a>';
SELECT extractValue(@xml, '/a/b[@c="c11"]/d');
extractValue(@xml, '/a/b[@c="c11"]/d')
d11
SELECT extractValue(@xml, '/a/b[@c="c21"]/d');
extractValue(@xml, '/a/b[@c="c21"]/d')
d21
SELECT extractValue(@xml, '/a/b[d="d11"]/@c');
extractValue(@xml, '/a/b[d="d11"]/@c')
c11
SELECT extractValue(@xml, '/a/b[d="d21"]/@c');
extractValue(@xml, '/a/b[d="d21"]/@c')
c21
SELECT extractValue(@xml, '/a[b="b11"]');
extractValue(@xml, '/a[b="b11"]')
a1
SELECT extractValue(@xml, '/a[b/@c="c11"]');
extractValue(@xml, '/a[b/@c="c11"]')
a1
SELECT extractValue(@xml, '/a[b/d="d11"]');
extractValue(@xml, '/a[b/d="d11"]')
a1
SELECT extractValue(@xml, '/a[/a/b="b11"]');
extractValue(@xml, '/a[/a/b="b11"]')
a1
SELECT extractValue(@xml, '/a[/a/b/@c="c11"]');
extractValue(@xml, '/a[/a/b/@c="c11"]')
a1
SELECT extractValue(@xml, '/a[/a/b/d="d11"]');
extractValue(@xml, '/a[/a/b/d="d11"]')
a1
SELECT extractValue('<a>a</a>', '/a[false()]');
extractValue('<a>a</a>', '/a[false()]')

SELECT extractValue('<a>a</a>', '/a[true()]');
extractValue('<a>a</a>', '/a[true()]')
a
SELECT extractValue('<a>a</a>', '/a[not(false())]');
extractValue('<a>a</a>', '/a[not(false())]')
a
SELECT extractValue('<a>a</a>', '/a[not(true())]');
extractValue('<a>a</a>', '/a[not(true())]')

SELECT extractValue('<a>a</a>', '/a[true() and true()]');
extractValue('<a>a</a>', '/a[true() and true()]')
a
SELECT extractValue('<a>a</a>', '/a[true() and false()]');
extractValue('<a>a</a>', '/a[true() and false()]')

SELECT extractValue('<a>a</a>', '/a[false()and false()]');
extractValue('<a>a</a>', '/a[false()and false()]')

SELECT extractValue('<a>a</a>', '/a[false()and true()]');
extractValue('<a>a</a>', '/a[false()and true()]')

SELECT extractValue('<a>a</a>', '/a[true() or true()]');
extractValue('<a>a</a>', '/a[true() or true()]')
a
SELECT extractValue('<a>a</a>', '/a[true() or false()]');
extractValue('<a>a</a>', '/a[true() or false()]')
a
SELECT extractValue('<a>a</a>', '/a[false()or false()]');
extractValue('<a>a</a>', '/a[false()or false()]')

SELECT extractValue('<a>a</a>', '/a[false()or true()]');
extractValue('<a>a</a>', '/a[false()or true()]')
a
SET @xml='<a>ab<b c="c" c="e">b1</b><b c="d">b2</b><b c="f" c="e">b3</b></a>';
select extractValue(@xml,'/a/b[@c="c"]');
extractValue(@xml,'/a/b[@c="c"]')
b1
select extractValue(@xml,'/a/b[@c="d"]');
extractValue(@xml,'/a/b[@c="d"]')
b2
select extractValue(@xml,'/a/b[@c="e"]');
extractValue(@xml,'/a/b[@c="e"]')
b1 b3
select extractValue(@xml,'/a/b[not(@c="e")]');
extractValue(@xml,'/a/b[not(@c="e")]')
b2
select extractValue(@xml,'/a/b[@c!="e"]');
extractValue(@xml,'/a/b[@c!="e"]')
b1 b2 b3
select extractValue(@xml,'/a/b[@c="c" or @c="d"]');
extractValue(@xml,'/a/b[@c="c" or @c="d"]')
b1 b2
select extractValue(@xml,'/a/b[@c="c" and @c="e"]');
extractValue(@xml,'/a/b[@c="c" and @c="e"]')
b1
SET @xml='<a><b c="c" d="d">b1</b><b d="d" e="e">b2</b></a>';
select extractValue(@xml,'/a/b[@c]');
extractValue(@xml,'/a/b[@c]')
b1
select extractValue(@xml,'/a/b[@d]');
extractValue(@xml,'/a/b[@d]')
b1 b2
select extractValue(@xml,'/a/b[@e]');
extractValue(@xml,'/a/b[@e]')
b2
select extractValue(@xml,'/a/b[not(@c)]');
extractValue(@xml,'/a/b[not(@c)]')
b2
select extractValue(@xml,'/a/b[not(@d)]');
extractValue(@xml,'/a/b[not(@d)]')

select extractValue(@xml,'/a/b[not(@e)]');
extractValue(@xml,'/a/b[not(@e)]')
b1
select extractValue(@xml, '/a/b[boolean(@c) or boolean(@d)]');
extractValue(@xml, '/a/b[boolean(@c) or boolean(@d)]')
b1 b2
select extractValue(@xml, '/a/b[boolean(@c) or boolean(@e)]');
extractValue(@xml, '/a/b[boolean(@c) or boolean(@e)]')
b1 b2
select extractValue(@xml, '/a/b[boolean(@d) or boolean(@e)]');
extractValue(@xml, '/a/b[boolean(@d) or boolean(@e)]')
b1 b2
select extractValue(@xml, '/a/b[boolean(@c) and boolean(@d)]');
extractValue(@xml, '/a/b[boolean(@c) and boolean(@d)]')
b1
select extractValue(@xml, '/a/b[boolean(@c) and boolean(@e)]');
extractValue(@xml, '/a/b[boolean(@c) and boolean(@e)]')

select extractValue(@xml, '/a/b[boolean(@d) and boolean(@e)]');
extractValue(@xml, '/a/b[boolean(@d) and boolean(@e)]')
b2
select extractValue(@xml, '/a/b[@c or @d]');
extractValue(@xml, '/a/b[@c or @d]')
b1 b2
select extractValue(@xml, '/a/b[@c or @e]');
extractValue(@xml, '/a/b[@c or @e]')
b1 b2
select extractValue(@xml, '/a/b[@d or @e]');
extractValue(@xml, '/a/b[@d or @e]')
b1 b2
select extractValue(@xml, '/a/b[@c and @d]');
extractValue(@xml, '/a/b[@c and @d]')
b1
select extractValue(@xml, '/a/b[@c and @e]');
extractValue(@xml, '/a/b[@c and @e]')

select extractValue(@xml, '/a/b[@d and @e]');
extractValue(@xml, '/a/b[@d and @e]')
b2
SET @xml='<a><b c="c">b1</b><b>b2</b></a>';
SELECT extractValue(@xml,'/a/b[@*]');
extractValue(@xml,'/a/b[@*]')
b1
SELECT extractValue(@xml,'/a/b[not(@*)]');
extractValue(@xml,'/a/b[not(@*)]')
b2
SELECT extractValue('<a>a</a>', '/a[ceiling(3.1)=4]');
extractValue('<a>a</a>', '/a[ceiling(3.1)=4]')
a
SELECT extractValue('<a>a</a>', '/a[floor(3.1)=3]');
extractValue('<a>a</a>', '/a[floor(3.1)=3]')
a
SELECT extractValue('<a>a</a>', '/a[round(3.1)=3]');
extractValue('<a>a</a>', '/a[round(3.1)=3]')
a
SELECT extractValue('<a>a</a>', '/a[round(3.8)=4]');
extractValue('<a>a</a>', '/a[round(3.8)=4]')
a
SELECT extractValue('<a><b>b</b><c>c</c></a>', '/a/b | /a/c');
extractValue('<a><b>b</b><c>c</c></a>', '/a/b | /a/c')
b c
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=1]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=1]')
b1
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=2]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=2]')
b2
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=3]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=3]')
b3
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[1=position()]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[1=position()]')
b1
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2=position()]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2=position()]')
b2
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[3=position()]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[3=position()]')
b3
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2>=position()]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2>=position()]')
b1 b2
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2<=position()]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[2<=position()]')
b2 b3
select extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=3 or position()=2]');
extractValue('<a b="b1" b="b2" b="b3"/>','/a/@b[position()=3 or position()=2]')
b2 b3
SELECT extractValue('<a>a<b>a1<c>c1</c></b><b>a2</b></a>','/a/b[count(c)=0]');
extractValue('<a>a<b>a1<c>c1</c></b><b>a2</b></a>','/a/b[count(c)=0]')
a2
SELECT extractValue('<a>a<b>a1<c>c1</c></b><b>a2</b></a>','/a/b[count(c)=1]');
extractValue('<a>a<b>a1<c>c1</c></b><b>a2</b></a>','/a/b[count(c)=1]')
a1
select extractValue('<a>a1<b ba="1" ba="2">b1</b><b>b2</b>4</a>','/a/b[sum(@ba)=3]');
extractValue('<a>a1<b ba="1" ba="2">b1</b><b>b2</b>4</a>','/a/b[sum(@ba)=3]')
b1
select extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[1]');
extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[1]')
b1
select extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[boolean(1)]');
extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[boolean(1)]')
b1 b2
select extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[true()]');
extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[true()]')
b1 b2
select extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[number(true())]');
extractValue('<a><b>b1</b><b>b2</b></a>','/a/b[number(true())]')
b1
select extractValue('<a>ab</a>','/a[contains("abc","b")]');
extractValue('<a>ab</a>','/a[contains("abc","b")]')
ab
select extractValue('<a>ab</a>','/a[contains(.,"a")]');
extractValue('<a>ab</a>','/a[contains(.,"a")]')
ab
select extractValue('<a>ab</a>','/a[contains(.,"b")]');
extractValue('<a>ab</a>','/a[contains(.,"b")]')
ab
select extractValue('<a>ab</a>','/a[contains(.,"c")]');
extractValue('<a>ab</a>','/a[contains(.,"c")]')

select extractValue('<a b="1">ab</a>','/a[concat(@b,"2")="12"]');
extractValue('<a b="1">ab</a>','/a[concat(@b,"2")="12"]')
ab
SET @xml='<a b="11" b="12" b="21" b="22">ab</a>';
select extractValue(@xml, '/a/@b[substring(.,2)="1"]');
extractValue(@xml, '/a/@b[substring(.,2)="1"]')
11 21
select extractValue(@xml, '/a/@b[substring(.,2)="2"]');
extractValue(@xml, '/a/@b[substring(.,2)="2"]')
12 22
select extractValue(@xml, '/a/@b[substring(.,1,1)="1"]');
extractValue(@xml, '/a/@b[substring(.,1,1)="1"]')
11 12
select extractValue(@xml, '/a/@b[substring(.,1,1)="2"]');
extractValue(@xml, '/a/@b[substring(.,1,1)="2"]')
21 22
select extractValue(@xml, '/a/@b[substring(.,2,1)="1"]');
extractValue(@xml, '/a/@b[substring(.,2,1)="1"]')
11 21
select extractValue(@xml, '/a/@b[substring(.,2,1)="2"]');
extractValue(@xml, '/a/@b[substring(.,2,1)="2"]')
12 22
SET @xml='<a b="b11" b="b12" b="b21" b="22"/>';
select extractValue(@xml,'/a/@b');
extractValue(@xml,'/a/@b')
b11 b12 b21 22
select extractValue(@xml,'/a/@b[contains(.,"1")]');
extractValue(@xml,'/a/@b[contains(.,"1")]')
b11 b12 b21
select extractValue(@xml,'/a/@b[contains(.,"1")][contains(.,"2")]');
extractValue(@xml,'/a/@b[contains(.,"1")][contains(.,"2")]')
b12 b21
select extractValue(@xml,'/a/@b[contains(.,"1")][contains(.,"2")][2]');
extractValue(@xml,'/a/@b[contains(.,"1")][contains(.,"2")][2]')
b21
SET @xml='<a>a1<b>b1<c>c1</c>b2</b>a2</a>';
select UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','+++++++++');
UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','+++++++++')
<a>a1<b>b1+++++++++b2</b>a2</a>
select UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','<c1>+++++++++</c1>');
UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','<c1>+++++++++</c1>')
<a>a1<b>b1<c1>+++++++++</c1>b2</b>a2</a>
select UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','<c1/>');
UpdateXML('<a>a1<b>b1<c>c1</c>b2</b>a2</a>','/a/b/c','<c1/>')
<a>a1<b>b1<c1/>b2</b>a2</a>
SET @xml='<a><b>bb</b></a>';
select UpdateXML(@xml, '/a/b', '<b>ccc</b>');
UpdateXML(@xml, '/a/b', '<b>ccc</b>')
<a><b>ccc</b></a>
SET @xml='<a aa1="aa1" aa2="aa2"><b bb1="bb1" bb2="bb2">bb</b></a>';
select UpdateXML(@xml, '/a/b', '<b>ccc</b>');
UpdateXML(@xml, '/a/b', '<b>ccc</b>')
<a aa1="aa1" aa2="aa2"><b>ccc</b></a>
select UpdateXML(@xml, '/a/@aa1', '');
UpdateXML(@xml, '/a/@aa1', '')
<a  aa2="aa2"><b bb1="bb1" bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/@aa1', 'aa3="aa3"');
UpdateXML(@xml, '/a/@aa1', 'aa3="aa3"')
<a aa3="aa3" aa2="aa2"><b bb1="bb1" bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/@aa2', '');
UpdateXML(@xml, '/a/@aa2', '')
<a aa1="aa1" ><b bb1="bb1" bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/@aa2', 'aa3="aa3"');
UpdateXML(@xml, '/a/@aa2', 'aa3="aa3"')
<a aa1="aa1" aa3="aa3"><b bb1="bb1" bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/b/@bb1', '');
UpdateXML(@xml, '/a/b/@bb1', '')
<a aa1="aa1" aa2="aa2"><b  bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/b/@bb1', 'bb3="bb3"');
UpdateXML(@xml, '/a/b/@bb1', 'bb3="bb3"')
<a aa1="aa1" aa2="aa2"><b bb3="bb3" bb2="bb2">bb</b></a>
select UpdateXML(@xml, '/a/b/@bb2', '');
UpdateXML(@xml, '/a/b/@bb2', '')
<a aa1="aa1" aa2="aa2"><b bb1="bb1" >bb</b></a>
select UpdateXML(@xml, '/a/b/@bb2', 'bb3="bb3"');
UpdateXML(@xml, '/a/b/@bb2', 'bb3="bb3"')
<a aa1="aa1" aa2="aa2"><b bb1="bb1" bb3="bb3">bb</b></a>
SET @xml= '<order><clerk>lesser wombat</clerk></order>';
select extractvalue(@xml,'order/clerk');
extractvalue(@xml,'order/clerk')
lesser wombat
select extractvalue(@xml,'/order/clerk');
extractvalue(@xml,'/order/clerk')
lesser wombat
select extractvalue('<a><b>B</b></a>','/a|/b');
extractvalue('<a><b>B</b></a>','/a|/b')

select extractvalue('<a><b>B</b></a>','/a|b');
extractvalue('<a><b>B</b></a>','/a|b')

select extractvalue('<a>a<b>B</b></a>','/a|/b');
extractvalue('<a>a<b>B</b></a>','/a|/b')
a
select extractvalue('<a>a<b>B</b></a>','/a|b');
extractvalue('<a>a<b>B</b></a>','/a|b')
a
select extractvalue('<a>a<b>B</b></a>','a|/b');
extractvalue('<a>a<b>B</b></a>','a|/b')
a
select extractvalue('<a>A</a>','/<a>');
ERROR HY000: XPATH syntax error: '<a>'
select extractvalue('<a><b>b</b><b!>b!</b!></a>','//b!');
ERROR HY000: XPATH syntax error: '!'
select extractvalue('<a>A<b>B<c>C</c></b></a>','/a/descendant::*');
extractvalue('<a>A<b>B<c>C</c></b></a>','/a/descendant::*')
B C
select extractvalue('<a>A<b>B<c>C</c></b></a>','/a/self::*');
extractvalue('<a>A<b>B<c>C</c></b></a>','/a/self::*')
A
select extractvalue('<a>A<b>B<c>C</c></b></a>','/a/descendant-or-self::*');
extractvalue('<a>A<b>B<c>C</c></b></a>','/a/descendant-or-self::*')
A B C
select extractvalue('<A_B>A</A_B>','/A_B');
extractvalue('<A_B>A</A_B>','/A_B')
A
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[position()]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[position()]')
B1 B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=last()]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=last()]')
B1 B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()]')
B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()-1]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()-1]')
B1
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=1]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=1]')

select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=2]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=2]')
B1 B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=position()]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[last()=position()]')
B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)]')
B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)-1]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)-1]')
B1
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=1]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=1]')

select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=2]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=2]')
B1 B2
select extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=position()]');
extractvalue('<a>A<b>B1</b><b>B2</b></a>','/a/b[count(.)=position()]')
B2
select extractvalue('<a>Jack</a>','/a[contains(../a,"J")]');
extractvalue('<a>Jack</a>','/a[contains(../a,"J")]')
Jack
select extractvalue('<a>Jack</a>','/a[contains(../a,"j")]');
extractvalue('<a>Jack</a>','/a[contains(../a,"j")]')
Jack
select extractvalue('<a>Jack</a>','/a[contains(../a,"j")]' collate latin1_bin);
extractvalue('<a>Jack</a>','/a[contains(../a,"j")]' collate latin1_bin)

select extractvalue('<a>Jack</a>' collate latin1_bin,'/a[contains(../a,"j")]');
extractvalue('<a>Jack</a>' collate latin1_bin,'/a[contains(../a,"j")]')

select ExtractValue('<tag1><![CDATA[test]]></tag1>','/tag1');
ExtractValue('<tag1><![CDATA[test]]></tag1>','/tag1')
test
select extractValue('<e>1</e>','position()');
ERROR HY000: XPATH syntax error: ''
select extractValue('<e>1</e>','last()');
ERROR HY000: XPATH syntax error: ''
select extractValue('<e><a>1</a></e>','/e/');
ERROR HY000: XPATH syntax error: ''
set names utf8;
select extractValue('<Ñ><r>r</r></Ñ>','/Ñ/r');
extractValue('<Ñ><r>r</r></Ñ>','/Ñ/r')
r
select extractValue('<r><Ñ>Ñ</Ñ></r>','/r/Ñ');
extractValue('<r><Ñ>Ñ</Ñ></r>','/r/Ñ')
Ñ
select extractValue('<Ñ r="r"/>','/Ñ/@r');
extractValue('<Ñ r="r"/>','/Ñ/@r')
r
select extractValue('<r Ñ="Ñ"/>','/r/@Ñ');
extractValue('<r Ñ="Ñ"/>','/r/@Ñ')
Ñ
DROP PROCEDURE IF EXISTS p2;
CREATE PROCEDURE p2 ()
BEGIN
DECLARE p LONGTEXT CHARACTER SET UTF8 DEFAULT '<Ñ><r>A</r></Ñ>';
SELECT EXTRACTVALUE(p,'/Ñ/r');
END//
CALL p2();
EXTRACTVALUE(p,'/Ñ/r')
A
DROP PROCEDURE p2;