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Bug#43183 ExctractValue() brings result list in missorder

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The problem is that XML functions(items) do not reset null_value
before their execution and further item excution may use
null_value value of the previous result.
The fix is to reset null_value.
This commit is contained in:
Sergey Glukhov
2009-04-01 13:40:33 +05:00
parent a26f8d91aa
commit c08ceffded
3 changed files with 58 additions and 0 deletions
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29
mysql-test/r/xml.result
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@ -1064,4 +1064,33 @@ select extractvalue('<a></a>','"b"/a');
ERROR HY000: XPATH syntax error: '/a'
select extractvalue('<a></a>','(1)/a');
ERROR HY000: XPATH syntax error: '/a'
CREATE TABLE IF NOT EXISTS t1 (
id int(10) unsigned NOT NULL AUTO_INCREMENT,
xml text,
PRIMARY KEY (id)
) ENGINE=MyISAM;
INSERT INTO t1 (id, xml) VALUES
(15, '<?xml version="1.0"?><bla name="blubb"></bla>'),
(14, '<xml version="kaputt">');
SELECT
extractvalue( xml, '/bla/@name' ),
extractvalue( xml, '/bla/@name' )
FROM t1 ORDER BY t1.id;
extractvalue( xml, '/bla/@name' ) extractvalue( xml, '/bla/@name' )
NULL NULL
blubb blubb
Warnings:
Warning 1525 Incorrect XML value: 'parse error at line 1 pos 23: unexpected END-OF-INPUT'
Warning 1525 Incorrect XML value: 'parse error at line 1 pos 23: unexpected END-OF-INPUT'
SELECT
UpdateXML(xml, '/bla/@name', 'test'),
UpdateXML(xml, '/bla/@name', 'test')
FROM t1 ORDER BY t1.id;
UpdateXML(xml, '/bla/@name', 'test') UpdateXML(xml, '/bla/@name', 'test')
NULL NULL
<?xml version="1.0"?><bla test></bla> <?xml version="1.0"?><bla test></bla>
Warnings:
Warning 1525 Incorrect XML value: 'parse error at line 1 pos 23: unexpected END-OF-INPUT'
Warning 1525 Incorrect XML value: 'parse error at line 1 pos 23: unexpected END-OF-INPUT'
DROP TABLE t1;
End of 5.1 tests