1788 lines
64 KiB
Plaintext
1788 lines
64 KiB
Plaintext
CREATE TABLE xmltest (
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id int,
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data xml
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);
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INSERT INTO xmltest VALUES (1, '<value>one</value>');
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INSERT INTO xmltest VALUES (2, '<value>two</value>');
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INSERT INTO xmltest VALUES (3, '<wrong');
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ERROR: invalid XML content
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LINE 1: INSERT INTO xmltest VALUES (3, '<wrong');
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^
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DETAIL: line 1: Couldn't find end of Start Tag wrong line 1
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<wrong
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^
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SELECT * FROM xmltest;
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id | data
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----+--------------------
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1 | <value>one</value>
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2 | <value>two</value>
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(2 rows)
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-- test non-throwing API, too
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SELECT pg_input_is_valid('<value>one</value>', 'xml');
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pg_input_is_valid
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-------------------
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t
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(1 row)
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SELECT pg_input_is_valid('<value>one</', 'xml');
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pg_input_is_valid
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-------------------
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f
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(1 row)
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SELECT message FROM pg_input_error_info('<value>one</', 'xml');
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message
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---------------------
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invalid XML content
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(1 row)
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SELECT pg_input_is_valid('<?xml version="1.0" standalone="y"?><foo/>', 'xml');
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pg_input_is_valid
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-------------------
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f
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(1 row)
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SELECT message FROM pg_input_error_info('<?xml version="1.0" standalone="y"?><foo/>', 'xml');
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message
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----------------------------------------------
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invalid XML content: invalid XML declaration
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(1 row)
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SELECT xmlcomment('test');
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xmlcomment
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-------------
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<!--test-->
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(1 row)
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SELECT xmlcomment('-test');
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xmlcomment
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--------------
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<!---test-->
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(1 row)
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SELECT xmlcomment('test-');
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ERROR: invalid XML comment
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SELECT xmlcomment('--test');
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ERROR: invalid XML comment
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SELECT xmlcomment('te st');
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xmlcomment
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--------------
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<!--te st-->
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(1 row)
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SELECT xmlconcat(xmlcomment('hello'),
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xmlelement(NAME qux, 'foo'),
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xmlcomment('world'));
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xmlconcat
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----------------------------------------
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<!--hello--><qux>foo</qux><!--world-->
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(1 row)
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SELECT xmlconcat('hello', 'you');
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xmlconcat
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-----------
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helloyou
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(1 row)
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SELECT xmlconcat(1, 2);
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ERROR: argument of XMLCONCAT must be type xml, not type integer
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LINE 1: SELECT xmlconcat(1, 2);
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^
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SELECT xmlconcat('bad', '<syntax');
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ERROR: invalid XML content
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LINE 1: SELECT xmlconcat('bad', '<syntax');
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^
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DETAIL: line 1: Couldn't find end of Start Tag syntax line 1
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<syntax
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^
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SELECT xmlconcat('<foo/>', NULL, '<?xml version="1.1" standalone="no"?><bar/>');
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xmlconcat
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--------------
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<foo/><bar/>
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(1 row)
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SELECT xmlconcat('<?xml version="1.1"?><foo/>', NULL, '<?xml version="1.1" standalone="no"?><bar/>');
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xmlconcat
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-----------------------------------
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<?xml version="1.1"?><foo/><bar/>
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(1 row)
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SELECT xmlconcat(NULL);
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xmlconcat
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-----------
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(1 row)
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SELECT xmlconcat(NULL, NULL);
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xmlconcat
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-----------
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(1 row)
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SELECT xmlelement(name element,
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xmlattributes (1 as one, 'deuce' as two),
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'content');
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xmlelement
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------------------------------------------------
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<element one="1" two="deuce">content</element>
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(1 row)
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SELECT xmlelement(name element,
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xmlattributes ('unnamed and wrong'));
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ERROR: unnamed XML attribute value must be a column reference
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LINE 2: xmlattributes ('unnamed and wrong'));
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^
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SELECT xmlelement(name element, xmlelement(name nested, 'stuff'));
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xmlelement
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-------------------------------------------
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<element><nested>stuff</nested></element>
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(1 row)
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SELECT xmlelement(name employee, xmlforest(name, age, salary as pay)) FROM emp;
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xmlelement
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----------------------------------------------------------------------
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<employee><name>sharon</name><age>25</age><pay>1000</pay></employee>
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<employee><name>sam</name><age>30</age><pay>2000</pay></employee>
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<employee><name>bill</name><age>20</age><pay>1000</pay></employee>
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<employee><name>jeff</name><age>23</age><pay>600</pay></employee>
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<employee><name>cim</name><age>30</age><pay>400</pay></employee>
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<employee><name>linda</name><age>19</age><pay>100</pay></employee>
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(6 rows)
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SELECT xmlelement(name duplicate, xmlattributes(1 as a, 2 as b, 3 as a));
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ERROR: XML attribute name "a" appears more than once
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LINE 1: ...ment(name duplicate, xmlattributes(1 as a, 2 as b, 3 as a));
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^
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SELECT xmlelement(name num, 37);
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xmlelement
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---------------
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<num>37</num>
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(1 row)
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SELECT xmlelement(name foo, text 'bar');
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xmlelement
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----------------
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<foo>bar</foo>
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(1 row)
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SELECT xmlelement(name foo, xml 'bar');
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xmlelement
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----------------
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<foo>bar</foo>
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(1 row)
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SELECT xmlelement(name foo, text 'b<a/>r');
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xmlelement
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-------------------------
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<foo>b<a/>r</foo>
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(1 row)
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SELECT xmlelement(name foo, xml 'b<a/>r');
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xmlelement
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-------------------
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<foo>b<a/>r</foo>
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(1 row)
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SELECT xmlelement(name foo, array[1, 2, 3]);
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xmlelement
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-------------------------------------------------------------------------
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<foo><element>1</element><element>2</element><element>3</element></foo>
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(1 row)
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SET xmlbinary TO base64;
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SELECT xmlelement(name foo, bytea 'bar');
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xmlelement
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-----------------
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<foo>YmFy</foo>
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(1 row)
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SET xmlbinary TO hex;
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SELECT xmlelement(name foo, bytea 'bar');
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xmlelement
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-------------------
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<foo>626172</foo>
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(1 row)
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SELECT xmlelement(name foo, xmlattributes(true as bar));
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xmlelement
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-------------------
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<foo bar="true"/>
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(1 row)
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SELECT xmlelement(name foo, xmlattributes('2009-04-09 00:24:37'::timestamp as bar));
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xmlelement
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----------------------------------
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<foo bar="2009-04-09T00:24:37"/>
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(1 row)
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SELECT xmlelement(name foo, xmlattributes('infinity'::timestamp as bar));
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ERROR: timestamp out of range
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DETAIL: XML does not support infinite timestamp values.
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SELECT xmlelement(name foo, xmlattributes('<>&"''' as funny, xml 'b<a/>r' as funnier));
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xmlelement
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------------------------------------------------------------
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<foo funny="<>&"'" funnier="b<a/>r"/>
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(1 row)
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SELECT xmlparse(content '');
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xmlparse
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----------
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(1 row)
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SELECT xmlparse(content ' ');
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xmlparse
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----------
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(1 row)
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SELECT xmlparse(content 'abc');
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xmlparse
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----------
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abc
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(1 row)
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SELECT xmlparse(content '<abc>x</abc>');
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xmlparse
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--------------
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<abc>x</abc>
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(1 row)
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SELECT xmlparse(content '<invalidentity>&</invalidentity>');
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ERROR: invalid XML content
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DETAIL: line 1: xmlParseEntityRef: no name
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<invalidentity>&</invalidentity>
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^
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line 1: chunk is not well balanced
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<invalidentity>&</invalidentity>
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^
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SELECT xmlparse(content '<undefinedentity>&idontexist;</undefinedentity>');
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ERROR: invalid XML content
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DETAIL: line 1: Entity 'idontexist' not defined
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<undefinedentity>&idontexist;</undefinedentity>
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^
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line 1: chunk is not well balanced
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<undefinedentity>&idontexist;</undefinedentity>
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^
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SELECT xmlparse(content '<invalidns xmlns=''<''/>');
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xmlparse
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---------------------------
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<invalidns xmlns='<'/>
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(1 row)
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SELECT xmlparse(content '<relativens xmlns=''relative''/>');
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xmlparse
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--------------------------------
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<relativens xmlns='relative'/>
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(1 row)
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SELECT xmlparse(content '<twoerrors>&idontexist;</unbalanced>');
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ERROR: invalid XML content
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DETAIL: line 1: Entity 'idontexist' not defined
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<twoerrors>&idontexist;</unbalanced>
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^
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line 1: Opening and ending tag mismatch: twoerrors line 1 and unbalanced
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<twoerrors>&idontexist;</unbalanced>
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^
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line 1: chunk is not well balanced
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<twoerrors>&idontexist;</unbalanced>
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^
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SELECT xmlparse(content '<nosuchprefix:tag/>');
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xmlparse
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---------------------
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<nosuchprefix:tag/>
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(1 row)
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SELECT xmlparse(document ' ');
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ERROR: invalid XML document
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DETAIL: line 1: Start tag expected, '<' not found
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^
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SELECT xmlparse(document 'abc');
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ERROR: invalid XML document
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DETAIL: line 1: Start tag expected, '<' not found
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abc
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^
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SELECT xmlparse(document '<abc>x</abc>');
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xmlparse
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--------------
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<abc>x</abc>
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(1 row)
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SELECT xmlparse(document '<invalidentity>&</abc>');
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ERROR: invalid XML document
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DETAIL: line 1: xmlParseEntityRef: no name
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<invalidentity>&</abc>
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^
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line 1: Opening and ending tag mismatch: invalidentity line 1 and abc
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<invalidentity>&</abc>
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^
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SELECT xmlparse(document '<undefinedentity>&idontexist;</abc>');
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ERROR: invalid XML document
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DETAIL: line 1: Entity 'idontexist' not defined
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<undefinedentity>&idontexist;</abc>
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^
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line 1: Opening and ending tag mismatch: undefinedentity line 1 and abc
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<undefinedentity>&idontexist;</abc>
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^
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SELECT xmlparse(document '<invalidns xmlns=''<''/>');
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xmlparse
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---------------------------
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<invalidns xmlns='<'/>
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(1 row)
|
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SELECT xmlparse(document '<relativens xmlns=''relative''/>');
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xmlparse
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--------------------------------
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<relativens xmlns='relative'/>
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(1 row)
|
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SELECT xmlparse(document '<twoerrors>&idontexist;</unbalanced>');
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ERROR: invalid XML document
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DETAIL: line 1: Entity 'idontexist' not defined
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<twoerrors>&idontexist;</unbalanced>
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^
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line 1: Opening and ending tag mismatch: twoerrors line 1 and unbalanced
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<twoerrors>&idontexist;</unbalanced>
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^
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SELECT xmlparse(document '<nosuchprefix:tag/>');
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xmlparse
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---------------------
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<nosuchprefix:tag/>
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(1 row)
|
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SELECT xmlpi(name foo);
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xmlpi
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---------
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<?foo?>
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(1 row)
|
|
|
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SELECT xmlpi(name xml);
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ERROR: invalid XML processing instruction
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DETAIL: XML processing instruction target name cannot be "xml".
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SELECT xmlpi(name xmlstuff);
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xmlpi
|
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--------------
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<?xmlstuff?>
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(1 row)
|
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SELECT xmlpi(name foo, 'bar');
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xmlpi
|
|
-------------
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<?foo bar?>
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(1 row)
|
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SELECT xmlpi(name foo, 'in?>valid');
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ERROR: invalid XML processing instruction
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DETAIL: XML processing instruction cannot contain "?>".
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SELECT xmlpi(name foo, null);
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xmlpi
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-------
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|
(1 row)
|
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SELECT xmlpi(name xml, null);
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ERROR: invalid XML processing instruction
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DETAIL: XML processing instruction target name cannot be "xml".
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SELECT xmlpi(name xmlstuff, null);
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xmlpi
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-------
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(1 row)
|
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SELECT xmlpi(name "xml-stylesheet", 'href="mystyle.css" type="text/css"');
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xmlpi
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-------------------------------------------------------
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<?xml-stylesheet href="mystyle.css" type="text/css"?>
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(1 row)
|
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SELECT xmlpi(name foo, ' bar');
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xmlpi
|
|
-------------
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<?foo bar?>
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(1 row)
|
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SELECT xmlroot(xml '<foo/>', version no value, standalone no value);
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xmlroot
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|
---------
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<foo/>
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(1 row)
|
|
|
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SELECT xmlroot(xml '<foo/>', version '2.0');
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xmlroot
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-----------------------------
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<?xml version="2.0"?><foo/>
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(1 row)
|
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SELECT xmlroot(xml '<foo/>', version no value, standalone yes);
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xmlroot
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|
----------------------------------------------
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<?xml version="1.0" standalone="yes"?><foo/>
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(1 row)
|
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|
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SELECT xmlroot(xml '<?xml version="1.1"?><foo/>', version no value, standalone yes);
|
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xmlroot
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|
----------------------------------------------
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<?xml version="1.0" standalone="yes"?><foo/>
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(1 row)
|
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SELECT xmlroot(xmlroot(xml '<foo/>', version '1.0'), version '1.1', standalone no);
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xmlroot
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---------------------------------------------
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<?xml version="1.1" standalone="no"?><foo/>
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(1 row)
|
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|
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SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value, standalone no);
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xmlroot
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|
---------------------------------------------
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<?xml version="1.0" standalone="no"?><foo/>
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(1 row)
|
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SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value, standalone no value);
|
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xmlroot
|
|
---------
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<foo/>
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(1 row)
|
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|
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SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value);
|
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xmlroot
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|
----------------------------------------------
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<?xml version="1.0" standalone="yes"?><foo/>
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(1 row)
|
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|
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SELECT xmlroot (
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xmlelement (
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name gazonk,
|
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xmlattributes (
|
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'val' AS name,
|
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1 + 1 AS num
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),
|
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xmlelement (
|
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NAME qux,
|
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'foo'
|
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)
|
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),
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version '1.0',
|
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standalone yes
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);
|
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xmlroot
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------------------------------------------------------------------------------------------
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<?xml version="1.0" standalone="yes"?><gazonk name="val" num="2"><qux>foo</qux></gazonk>
|
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(1 row)
|
|
|
|
SELECT xmlserialize(content data as character varying(20)) FROM xmltest;
|
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xmlserialize
|
|
--------------------
|
|
<value>one</value>
|
|
<value>two</value>
|
|
(2 rows)
|
|
|
|
SELECT xmlserialize(content 'good' as char(10));
|
|
xmlserialize
|
|
--------------
|
|
good
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(document 'bad' as text);
|
|
ERROR: not an XML document
|
|
-- indent
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SELECT xmlserialize(DOCUMENT '<foo><bar><val x="y">42</val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
-------------------------
|
|
<foo> +
|
|
<bar> +
|
|
<val x="y">42</val>+
|
|
</bar> +
|
|
</foo> +
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<foo><bar><val x="y">42</val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
-------------------------
|
|
<foo> +
|
|
<bar> +
|
|
<val x="y">42</val>+
|
|
</bar> +
|
|
</foo>
|
|
(1 row)
|
|
|
|
-- no indent
|
|
SELECT xmlserialize(DOCUMENT '<foo><bar><val x="y">42</val></bar></foo>' AS text NO INDENT);
|
|
xmlserialize
|
|
-------------------------------------------
|
|
<foo><bar><val x="y">42</val></bar></foo>
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<foo><bar><val x="y">42</val></bar></foo>' AS text NO INDENT);
|
|
xmlserialize
|
|
-------------------------------------------
|
|
<foo><bar><val x="y">42</val></bar></foo>
|
|
(1 row)
|
|
|
|
-- indent non singly-rooted xml
|
|
SELECT xmlserialize(DOCUMENT '<foo>73</foo><bar><val x="y">42</val></bar>' AS text INDENT);
|
|
ERROR: not an XML document
|
|
SELECT xmlserialize(CONTENT '<foo>73</foo><bar><val x="y">42</val></bar>' AS text INDENT);
|
|
xmlserialize
|
|
-----------------------
|
|
<foo>73</foo> +
|
|
<bar> +
|
|
<val x="y">42</val>+
|
|
</bar>
|
|
(1 row)
|
|
|
|
-- indent non singly-rooted xml with mixed contents
|
|
SELECT xmlserialize(DOCUMENT 'text node<foo>73</foo>text node<bar><val x="y">42</val></bar>' AS text INDENT);
|
|
ERROR: not an XML document
|
|
SELECT xmlserialize(CONTENT 'text node<foo>73</foo>text node<bar><val x="y">42</val></bar>' AS text INDENT);
|
|
xmlserialize
|
|
------------------------
|
|
text node +
|
|
<foo>73</foo>text node+
|
|
<bar> +
|
|
<val x="y">42</val> +
|
|
</bar>
|
|
(1 row)
|
|
|
|
-- indent singly-rooted xml with mixed contents
|
|
SELECT xmlserialize(DOCUMENT '<foo><bar><val x="y">42</val><val x="y">text node<val>73</val></val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
---------------------------------------------
|
|
<foo> +
|
|
<bar> +
|
|
<val x="y">42</val> +
|
|
<val x="y">text node<val>73</val></val>+
|
|
</bar> +
|
|
</foo> +
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<foo><bar><val x="y">42</val><val x="y">text node<val>73</val></val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
---------------------------------------------
|
|
<foo> +
|
|
<bar> +
|
|
<val x="y">42</val> +
|
|
<val x="y">text node<val>73</val></val>+
|
|
</bar> +
|
|
</foo>
|
|
(1 row)
|
|
|
|
-- indent empty string
|
|
SELECT xmlserialize(DOCUMENT '' AS text INDENT);
|
|
ERROR: not an XML document
|
|
SELECT xmlserialize(CONTENT '' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
|
|
(1 row)
|
|
|
|
-- whitespaces
|
|
SELECT xmlserialize(DOCUMENT ' ' AS text INDENT);
|
|
ERROR: not an XML document
|
|
SELECT xmlserialize(CONTENT ' ' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
|
|
(1 row)
|
|
|
|
-- indent null
|
|
SELECT xmlserialize(DOCUMENT NULL AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT NULL AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
|
|
(1 row)
|
|
|
|
-- indent with XML declaration
|
|
SELECT xmlserialize(DOCUMENT '<?xml version="1.0" encoding="UTF-8"?><foo><bar><val>73</val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
----------------------------------------
|
|
<?xml version="1.0" encoding="UTF-8"?>+
|
|
<foo> +
|
|
<bar> +
|
|
<val>73</val> +
|
|
</bar> +
|
|
</foo> +
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<?xml version="1.0" encoding="UTF-8"?><foo><bar><val>73</val></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
-------------------
|
|
<foo> +
|
|
<bar> +
|
|
<val>73</val>+
|
|
</bar> +
|
|
</foo>
|
|
(1 row)
|
|
|
|
-- indent containing DOCTYPE declaration
|
|
SELECT xmlserialize(DOCUMENT '<!DOCTYPE a><a/>' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
<!DOCTYPE a>+
|
|
<a/> +
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<!DOCTYPE a><a/>' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
<!DOCTYPE a>+
|
|
<a/> +
|
|
|
|
(1 row)
|
|
|
|
-- indent xml with empty element
|
|
SELECT xmlserialize(DOCUMENT '<foo><bar></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
<foo> +
|
|
<bar/> +
|
|
</foo> +
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<foo><bar></bar></foo>' AS text INDENT);
|
|
xmlserialize
|
|
--------------
|
|
<foo> +
|
|
<bar/> +
|
|
</foo>
|
|
(1 row)
|
|
|
|
-- 'no indent' = not using 'no indent'
|
|
SELECT xmlserialize(DOCUMENT '<foo><bar><val x="y">42</val></bar></foo>' AS text) = xmlserialize(DOCUMENT '<foo><bar><val x="y">42</val></bar></foo>' AS text NO INDENT);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xmlserialize(CONTENT '<foo><bar><val x="y">42</val></bar></foo>' AS text) = xmlserialize(CONTENT '<foo><bar><val x="y">42</val></bar></foo>' AS text NO INDENT);
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml '<foo>bar</foo>' IS DOCUMENT;
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml '<foo>bar</foo><bar>foo</bar>' IS DOCUMENT;
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml '<abc/>' IS NOT DOCUMENT;
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml 'abc' IS NOT DOCUMENT;
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '<>' IS NOT DOCUMENT;
|
|
ERROR: invalid XML content
|
|
LINE 1: SELECT '<>' IS NOT DOCUMENT;
|
|
^
|
|
DETAIL: line 1: StartTag: invalid element name
|
|
<>
|
|
^
|
|
SELECT xmlagg(data) FROM xmltest;
|
|
xmlagg
|
|
--------------------------------------
|
|
<value>one</value><value>two</value>
|
|
(1 row)
|
|
|
|
SELECT xmlagg(data) FROM xmltest WHERE id > 10;
|
|
xmlagg
|
|
--------
|
|
|
|
(1 row)
|
|
|
|
SELECT xmlelement(name employees, xmlagg(xmlelement(name name, name))) FROM emp;
|
|
xmlelement
|
|
--------------------------------------------------------------------------------------------------------------------------------
|
|
<employees><name>sharon</name><name>sam</name><name>bill</name><name>jeff</name><name>cim</name><name>linda</name></employees>
|
|
(1 row)
|
|
|
|
-- Check mapping SQL identifier to XML name
|
|
SELECT xmlpi(name ":::_xml_abc135.%-&_");
|
|
xmlpi
|
|
-------------------------------------------------
|
|
<?_x003A_::_x005F_xml_abc135._x0025_-_x0026__?>
|
|
(1 row)
|
|
|
|
SELECT xmlpi(name "123");
|
|
xmlpi
|
|
---------------
|
|
<?_x0031_23?>
|
|
(1 row)
|
|
|
|
PREPARE foo (xml) AS SELECT xmlconcat('<foo/>', $1);
|
|
SET XML OPTION DOCUMENT;
|
|
EXECUTE foo ('<bar/>');
|
|
xmlconcat
|
|
--------------
|
|
<foo/><bar/>
|
|
(1 row)
|
|
|
|
EXECUTE foo ('bad');
|
|
ERROR: invalid XML document
|
|
LINE 1: EXECUTE foo ('bad');
|
|
^
|
|
DETAIL: line 1: Start tag expected, '<' not found
|
|
bad
|
|
^
|
|
SELECT xml '<!DOCTYPE a><a/><b/>';
|
|
ERROR: invalid XML document
|
|
LINE 1: SELECT xml '<!DOCTYPE a><a/><b/>';
|
|
^
|
|
DETAIL: line 1: Extra content at the end of the document
|
|
<!DOCTYPE a><a/><b/>
|
|
^
|
|
SET XML OPTION CONTENT;
|
|
EXECUTE foo ('<bar/>');
|
|
xmlconcat
|
|
--------------
|
|
<foo/><bar/>
|
|
(1 row)
|
|
|
|
EXECUTE foo ('good');
|
|
xmlconcat
|
|
------------
|
|
<foo/>good
|
|
(1 row)
|
|
|
|
SELECT xml '<!-- in SQL:2006+ a doc is content too--> <?y z?> <!DOCTYPE a><a/>';
|
|
xml
|
|
--------------------------------------------------------------------
|
|
<!-- in SQL:2006+ a doc is content too--> <?y z?> <!DOCTYPE a><a/>
|
|
(1 row)
|
|
|
|
SELECT xml '<?xml version="1.0"?> <!-- hi--> <!DOCTYPE a><a/>';
|
|
xml
|
|
------------------------------
|
|
<!-- hi--> <!DOCTYPE a><a/>
|
|
(1 row)
|
|
|
|
SELECT xml '<!DOCTYPE a><a/>';
|
|
xml
|
|
------------------
|
|
<!DOCTYPE a><a/>
|
|
(1 row)
|
|
|
|
SELECT xml '<!-- hi--> oops <!DOCTYPE a><a/>';
|
|
ERROR: invalid XML content
|
|
LINE 1: SELECT xml '<!-- hi--> oops <!DOCTYPE a><a/>';
|
|
^
|
|
DETAIL: line 1: StartTag: invalid element name
|
|
<!-- hi--> oops <!DOCTYPE a><a/>
|
|
^
|
|
SELECT xml '<!-- hi--> <oops/> <!DOCTYPE a><a/>';
|
|
ERROR: invalid XML content
|
|
LINE 1: SELECT xml '<!-- hi--> <oops/> <!DOCTYPE a><a/>';
|
|
^
|
|
DETAIL: line 1: StartTag: invalid element name
|
|
<!-- hi--> <oops/> <!DOCTYPE a><a/>
|
|
^
|
|
SELECT xml '<!DOCTYPE a><a/><b/>';
|
|
ERROR: invalid XML content
|
|
LINE 1: SELECT xml '<!DOCTYPE a><a/><b/>';
|
|
^
|
|
DETAIL: line 1: Extra content at the end of the document
|
|
<!DOCTYPE a><a/><b/>
|
|
^
|
|
-- Test backwards parsing
|
|
CREATE VIEW xmlview1 AS SELECT xmlcomment('test');
|
|
CREATE VIEW xmlview2 AS SELECT xmlconcat('hello', 'you');
|
|
CREATE VIEW xmlview3 AS SELECT xmlelement(name element, xmlattributes (1 as ":one:", 'deuce' as two), 'content&');
|
|
CREATE VIEW xmlview4 AS SELECT xmlelement(name employee, xmlforest(name, age, salary as pay)) FROM emp;
|
|
CREATE VIEW xmlview5 AS SELECT xmlparse(content '<abc>x</abc>');
|
|
CREATE VIEW xmlview6 AS SELECT xmlpi(name foo, 'bar');
|
|
CREATE VIEW xmlview7 AS SELECT xmlroot(xml '<foo/>', version no value, standalone yes);
|
|
CREATE VIEW xmlview8 AS SELECT xmlserialize(content 'good' as char(10));
|
|
CREATE VIEW xmlview9 AS SELECT xmlserialize(content 'good' as text);
|
|
SELECT table_name, view_definition FROM information_schema.views
|
|
WHERE table_name LIKE 'xmlview%' ORDER BY 1;
|
|
table_name | view_definition
|
|
------------+------------------------------------------------------------------------------------------------------------
|
|
xmlview1 | SELECT xmlcomment('test'::text) AS xmlcomment;
|
|
xmlview2 | SELECT XMLCONCAT('hello'::xml, 'you'::xml) AS "xmlconcat";
|
|
xmlview3 | SELECT XMLELEMENT(NAME element, XMLATTRIBUTES(1 AS ":one:", 'deuce' AS two), 'content&') AS "xmlelement";
|
|
xmlview4 | SELECT XMLELEMENT(NAME employee, XMLFOREST(name AS name, age AS age, salary AS pay)) AS "xmlelement" +
|
|
| FROM emp;
|
|
xmlview5 | SELECT XMLPARSE(CONTENT '<abc>x</abc>'::text STRIP WHITESPACE) AS "xmlparse";
|
|
xmlview6 | SELECT XMLPI(NAME foo, 'bar'::text) AS "xmlpi";
|
|
xmlview7 | SELECT XMLROOT('<foo/>'::xml, VERSION NO VALUE, STANDALONE YES) AS "xmlroot";
|
|
xmlview8 | SELECT (XMLSERIALIZE(CONTENT 'good'::xml AS character(10)))::character(10) AS "xmlserialize";
|
|
xmlview9 | SELECT XMLSERIALIZE(CONTENT 'good'::xml AS text) AS "xmlserialize";
|
|
(9 rows)
|
|
|
|
-- Text XPath expressions evaluation
|
|
SELECT xpath('/value', data) FROM xmltest;
|
|
xpath
|
|
----------------------
|
|
{<value>one</value>}
|
|
{<value>two</value>}
|
|
(2 rows)
|
|
|
|
SELECT xpath(NULL, NULL) IS NULL FROM xmltest;
|
|
?column?
|
|
----------
|
|
t
|
|
t
|
|
(2 rows)
|
|
|
|
SELECT xpath('', '<!-- error -->');
|
|
ERROR: empty XPath expression
|
|
CONTEXT: SQL function "xpath" statement 1
|
|
SELECT xpath('//text()', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
|
|
xpath
|
|
----------------
|
|
{"number one"}
|
|
(1 row)
|
|
|
|
SELECT xpath('//loc:piece/@id', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
|
|
xpath
|
|
-------
|
|
{1,2}
|
|
(1 row)
|
|
|
|
SELECT xpath('//loc:piece', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
|
|
xpath
|
|
------------------------------------------------------------------------------------------------------------------------------------------------
|
|
{"<local:piece xmlns:local=\"http://127.0.0.1\" id=\"1\">number one</local:piece>","<local:piece xmlns:local=\"http://127.0.0.1\" id=\"2\"/>"}
|
|
(1 row)
|
|
|
|
SELECT xpath('//loc:piece', '<local:data xmlns:local="http://127.0.0.1" xmlns="http://127.0.0.2"><local:piece id="1"><internal>number one</internal><internal2/></local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
|
|
xpath
|
|
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
{"<local:piece xmlns:local=\"http://127.0.0.1\" xmlns=\"http://127.0.0.2\" id=\"1\"><internal>number one</internal><internal2/></local:piece>","<local:piece xmlns:local=\"http://127.0.0.1\" id=\"2\"/>"}
|
|
(1 row)
|
|
|
|
SELECT xpath('//b', '<a>one <b>two</b> three <b>etc</b></a>');
|
|
xpath
|
|
-------------------------
|
|
{<b>two</b>,<b>etc</b>}
|
|
(1 row)
|
|
|
|
SELECT xpath('//text()', '<root><</root>');
|
|
xpath
|
|
--------
|
|
{<}
|
|
(1 row)
|
|
|
|
SELECT xpath('//@value', '<root value="<"/>');
|
|
xpath
|
|
--------
|
|
{<}
|
|
(1 row)
|
|
|
|
SELECT xpath('''<<invalid>>''', '<root/>');
|
|
xpath
|
|
---------------------------
|
|
{<<invalid>>}
|
|
(1 row)
|
|
|
|
SELECT xpath('count(//*)', '<root><sub/><sub/></root>');
|
|
xpath
|
|
-------
|
|
{3}
|
|
(1 row)
|
|
|
|
SELECT xpath('count(//*)=0', '<root><sub/><sub/></root>');
|
|
xpath
|
|
---------
|
|
{false}
|
|
(1 row)
|
|
|
|
SELECT xpath('count(//*)=3', '<root><sub/><sub/></root>');
|
|
xpath
|
|
--------
|
|
{true}
|
|
(1 row)
|
|
|
|
SELECT xpath('name(/*)', '<root><sub/><sub/></root>');
|
|
xpath
|
|
--------
|
|
{root}
|
|
(1 row)
|
|
|
|
SELECT xpath('/nosuchtag', '<root/>');
|
|
xpath
|
|
-------
|
|
{}
|
|
(1 row)
|
|
|
|
SELECT xpath('root', '<root/>');
|
|
xpath
|
|
-----------
|
|
{<root/>}
|
|
(1 row)
|
|
|
|
-- Round-trip non-ASCII data through xpath().
|
|
DO $$
|
|
DECLARE
|
|
xml_declaration text := '<?xml version="1.0" encoding="ISO-8859-1"?>';
|
|
degree_symbol text;
|
|
res xml[];
|
|
BEGIN
|
|
-- Per the documentation, except when the server encoding is UTF8, xpath()
|
|
-- may not work on non-ASCII data. The untranslatable_character and
|
|
-- undefined_function traps below, currently dead code, will become relevant
|
|
-- if we remove this limitation.
|
|
IF current_setting('server_encoding') <> 'UTF8' THEN
|
|
RAISE LOG 'skip: encoding % unsupported for xpath',
|
|
current_setting('server_encoding');
|
|
RETURN;
|
|
END IF;
|
|
|
|
degree_symbol := convert_from('\xc2b0', 'UTF8');
|
|
res := xpath('text()', (xml_declaration ||
|
|
'<x>' || degree_symbol || '</x>')::xml);
|
|
IF degree_symbol <> res[1]::text THEN
|
|
RAISE 'expected % (%), got % (%)',
|
|
degree_symbol, convert_to(degree_symbol, 'UTF8'),
|
|
res[1], convert_to(res[1]::text, 'UTF8');
|
|
END IF;
|
|
EXCEPTION
|
|
-- character with byte sequence 0xc2 0xb0 in encoding "UTF8" has no equivalent in encoding "LATIN8"
|
|
WHEN untranslatable_character
|
|
-- default conversion function for encoding "UTF8" to "MULE_INTERNAL" does not exist
|
|
OR undefined_function
|
|
-- unsupported XML feature
|
|
OR feature_not_supported THEN
|
|
RAISE LOG 'skip: %', SQLERRM;
|
|
END
|
|
$$;
|
|
-- Test xmlexists and xpath_exists
|
|
SELECT xmlexists('//town[text() = ''Toronto'']' PASSING BY REF '<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>');
|
|
xmlexists
|
|
-----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xmlexists('//town[text() = ''Cwmbran'']' PASSING BY REF '<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>');
|
|
xmlexists
|
|
-----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xmlexists('count(/nosuchtag)' PASSING BY REF '<root/>');
|
|
xmlexists
|
|
-----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xpath_exists('//town[text() = ''Toronto'']','<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>'::xml);
|
|
xpath_exists
|
|
--------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xpath_exists('//town[text() = ''Cwmbran'']','<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>'::xml);
|
|
xpath_exists
|
|
--------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xpath_exists('count(/nosuchtag)', '<root/>'::xml);
|
|
xpath_exists
|
|
--------------
|
|
t
|
|
(1 row)
|
|
|
|
INSERT INTO xmltest VALUES (4, '<menu><beers><name>Budvar</name><cost>free</cost><name>Carling</name><cost>lots</cost></beers></menu>'::xml);
|
|
INSERT INTO xmltest VALUES (5, '<menu><beers><name>Molson</name><cost>free</cost><name>Carling</name><cost>lots</cost></beers></menu>'::xml);
|
|
INSERT INTO xmltest VALUES (6, '<myns:menu xmlns:myns="http://myns.com"><myns:beers><myns:name>Budvar</myns:name><myns:cost>free</myns:cost><myns:name>Carling</myns:name><myns:cost>lots</myns:cost></myns:beers></myns:menu>'::xml);
|
|
INSERT INTO xmltest VALUES (7, '<myns:menu xmlns:myns="http://myns.com"><myns:beers><myns:name>Molson</myns:name><myns:cost>free</myns:cost><myns:name>Carling</myns:name><myns:cost>lots</myns:cost></myns:beers></myns:menu>'::xml);
|
|
SELECT COUNT(id) FROM xmltest WHERE xmlexists('/menu/beer' PASSING data);
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xmlexists('/menu/beer' PASSING BY REF data BY REF);
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xmlexists('/menu/beers' PASSING BY REF data);
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xmlexists('/menu/beers/name[text() = ''Molson'']' PASSING BY REF data);
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/menu/beer',data);
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/menu/beers',data);
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/menu/beers/name[text() = ''Molson'']',data);
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/myns:menu/myns:beer',data,ARRAY[ARRAY['myns','http://myns.com']]);
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/myns:menu/myns:beers',data,ARRAY[ARRAY['myns','http://myns.com']]);
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(id) FROM xmltest WHERE xpath_exists('/myns:menu/myns:beers/myns:name[text() = ''Molson'']',data,ARRAY[ARRAY['myns','http://myns.com']]);
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
CREATE TABLE query ( expr TEXT );
|
|
INSERT INTO query VALUES ('/menu/beers/cost[text() = ''lots'']');
|
|
SELECT COUNT(id) FROM xmltest, query WHERE xmlexists(expr PASSING BY REF data);
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
-- Test xml_is_well_formed and variants
|
|
SELECT xml_is_well_formed_document('<foo>bar</foo>');
|
|
xml_is_well_formed_document
|
|
-----------------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed_document('abc');
|
|
xml_is_well_formed_document
|
|
-----------------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed_content('<foo>bar</foo>');
|
|
xml_is_well_formed_content
|
|
----------------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed_content('abc');
|
|
xml_is_well_formed_content
|
|
----------------------------
|
|
t
|
|
(1 row)
|
|
|
|
SET xmloption TO DOCUMENT;
|
|
SELECT xml_is_well_formed('abc');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<abc/>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<foo>bar</foo>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<foo>bar</foo');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<foo><bar>baz</foo>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<pg:foo xmlns:pg="http://postgresql.org/stuff">bar</my:foo>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<pg:foo xmlns:pg="http://postgresql.org/stuff">bar</pg:foo>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<invalidentity>&</abc>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<undefinedentity>&idontexist;</abc>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<invalidns xmlns=''<''/>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<relativens xmlns=''relative''/>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT xml_is_well_formed('<twoerrors>&idontexist;</unbalanced>');
|
|
xml_is_well_formed
|
|
--------------------
|
|
f
|
|
(1 row)
|
|
|
|
SET xmloption TO CONTENT;
|
|
SELECT xml_is_well_formed('abc');
|
|
xml_is_well_formed
|
|
--------------------
|
|
t
|
|
(1 row)
|
|
|
|
-- Since xpath() deals with namespaces, it's a bit stricter about
|
|
-- what's well-formed and what's not. If we don't obey these rules
|
|
-- (i.e. ignore namespace-related errors from libxml), xpath()
|
|
-- fails in subtle ways. The following would for example produce
|
|
-- the xml value
|
|
-- <invalidns xmlns='<'/>
|
|
-- which is invalid because '<' may not appear un-escaped in
|
|
-- attribute values.
|
|
-- Since different libxml versions emit slightly different
|
|
-- error messages, we suppress the DETAIL in this test.
|
|
\set VERBOSITY terse
|
|
SELECT xpath('/*', '<invalidns xmlns=''<''/>');
|
|
ERROR: could not parse XML document
|
|
\set VERBOSITY default
|
|
-- Again, the XML isn't well-formed for namespace purposes
|
|
SELECT xpath('/*', '<nosuchprefix:tag/>');
|
|
ERROR: could not parse XML document
|
|
DETAIL: line 1: Namespace prefix nosuchprefix on tag is not defined
|
|
<nosuchprefix:tag/>
|
|
^
|
|
CONTEXT: SQL function "xpath" statement 1
|
|
-- XPath deprecates relative namespaces, but they're not supposed to
|
|
-- throw an error, only a warning.
|
|
SELECT xpath('/*', '<relativens xmlns=''relative''/>');
|
|
WARNING: line 1: xmlns: URI relative is not absolute
|
|
<relativens xmlns='relative'/>
|
|
^
|
|
xpath
|
|
--------------------------------------
|
|
{"<relativens xmlns=\"relative\"/>"}
|
|
(1 row)
|
|
|
|
-- External entity references should not leak filesystem information.
|
|
SELECT XMLPARSE(DOCUMENT '<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/passwd">]><foo>&c;</foo>');
|
|
xmlparse
|
|
-----------------------------------------------------------------
|
|
<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/passwd">]><foo>&c;</foo>
|
|
(1 row)
|
|
|
|
SELECT XMLPARSE(DOCUMENT '<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/no.such.file">]><foo>&c;</foo>');
|
|
xmlparse
|
|
-----------------------------------------------------------------------
|
|
<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/no.such.file">]><foo>&c;</foo>
|
|
(1 row)
|
|
|
|
-- This might or might not load the requested DTD, but it mustn't throw error.
|
|
SELECT XMLPARSE(DOCUMENT '<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"><chapter> </chapter>');
|
|
xmlparse
|
|
------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"><chapter> </chapter>
|
|
(1 row)
|
|
|
|
-- XMLPATH tests
|
|
CREATE TABLE xmldata(data xml);
|
|
INSERT INTO xmldata VALUES('<ROWS>
|
|
<ROW id="1">
|
|
<COUNTRY_ID>AU</COUNTRY_ID>
|
|
<COUNTRY_NAME>Australia</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID>
|
|
</ROW>
|
|
<ROW id="2">
|
|
<COUNTRY_ID>CN</COUNTRY_ID>
|
|
<COUNTRY_NAME>China</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID>
|
|
</ROW>
|
|
<ROW id="3">
|
|
<COUNTRY_ID>HK</COUNTRY_ID>
|
|
<COUNTRY_NAME>HongKong</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID>
|
|
</ROW>
|
|
<ROW id="4">
|
|
<COUNTRY_ID>IN</COUNTRY_ID>
|
|
<COUNTRY_NAME>India</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID>
|
|
</ROW>
|
|
<ROW id="5">
|
|
<COUNTRY_ID>JP</COUNTRY_ID>
|
|
<COUNTRY_NAME>Japan</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID><PREMIER_NAME>Sinzo Abe</PREMIER_NAME>
|
|
</ROW>
|
|
<ROW id="6">
|
|
<COUNTRY_ID>SG</COUNTRY_ID>
|
|
<COUNTRY_NAME>Singapore</COUNTRY_NAME>
|
|
<REGION_ID>3</REGION_ID><SIZE unit="km">791</SIZE>
|
|
</ROW>
|
|
</ROWS>');
|
|
-- XMLTABLE with columns
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME/text()' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
id | _id | country_name | country_id | region_id | size | unit | premier_name
|
|
----+-----+--------------+------------+-----------+------+------+---------------
|
|
1 | 1 | Australia | AU | 3 | | | not specified
|
|
2 | 2 | China | CN | 3 | | | not specified
|
|
3 | 3 | HongKong | HK | 3 | | | not specified
|
|
4 | 4 | India | IN | 3 | | | not specified
|
|
5 | 5 | Japan | JP | 3 | | | Sinzo Abe
|
|
6 | 6 | Singapore | SG | 3 | 791 | km | not specified
|
|
(6 rows)
|
|
|
|
CREATE VIEW xmltableview1 AS SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME/text()' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
SELECT * FROM xmltableview1;
|
|
id | _id | country_name | country_id | region_id | size | unit | premier_name
|
|
----+-----+--------------+------------+-----------+------+------+---------------
|
|
1 | 1 | Australia | AU | 3 | | | not specified
|
|
2 | 2 | China | CN | 3 | | | not specified
|
|
3 | 3 | HongKong | HK | 3 | | | not specified
|
|
4 | 4 | India | IN | 3 | | | not specified
|
|
5 | 5 | Japan | JP | 3 | | | Sinzo Abe
|
|
6 | 6 | Singapore | SG | 3 | 791 | km | not specified
|
|
(6 rows)
|
|
|
|
\sv xmltableview1
|
|
CREATE OR REPLACE VIEW public.xmltableview1 AS
|
|
SELECT "xmltable".id,
|
|
"xmltable"._id,
|
|
"xmltable".country_name,
|
|
"xmltable".country_id,
|
|
"xmltable".region_id,
|
|
"xmltable".size,
|
|
"xmltable".unit,
|
|
"xmltable".premier_name
|
|
FROM ( SELECT xmldata.data
|
|
FROM xmldata) x,
|
|
LATERAL XMLTABLE(('/ROWS/ROW'::text) PASSING (x.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
|
|
EXPLAIN (COSTS OFF) SELECT * FROM xmltableview1;
|
|
QUERY PLAN
|
|
-----------------------------------------
|
|
Nested Loop
|
|
-> Seq Scan on xmldata
|
|
-> Table Function Scan on "xmltable"
|
|
(3 rows)
|
|
|
|
EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
|
|
QUERY PLAN
|
|
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Nested Loop
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
-> Seq Scan on public.xmldata
|
|
Output: xmldata.data
|
|
-> Table Function Scan on "xmltable"
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
|
|
(7 rows)
|
|
|
|
-- errors
|
|
SELECT * FROM XMLTABLE (ROW () PASSING null COLUMNS v1 timestamp) AS f (v1, v2);
|
|
ERROR: XMLTABLE function has 1 columns available but 2 columns specified
|
|
-- XMLNAMESPACES tests
|
|
SELECT * FROM XMLTABLE(XMLNAMESPACES('http://x.y' AS zz),
|
|
'/zz:rows/zz:row'
|
|
PASSING '<rows xmlns="http://x.y"><row><a>10</a></row></rows>'
|
|
COLUMNS a int PATH 'zz:a');
|
|
a
|
|
----
|
|
10
|
|
(1 row)
|
|
|
|
CREATE VIEW xmltableview2 AS SELECT * FROM XMLTABLE(XMLNAMESPACES('http://x.y' AS zz),
|
|
'/zz:rows/zz:row'
|
|
PASSING '<rows xmlns="http://x.y"><row><a>10</a></row></rows>'
|
|
COLUMNS a int PATH 'zz:a');
|
|
SELECT * FROM xmltableview2;
|
|
a
|
|
----
|
|
10
|
|
(1 row)
|
|
|
|
SELECT * FROM XMLTABLE(XMLNAMESPACES(DEFAULT 'http://x.y'),
|
|
'/rows/row'
|
|
PASSING '<rows xmlns="http://x.y"><row><a>10</a></row></rows>'
|
|
COLUMNS a int PATH 'a');
|
|
ERROR: DEFAULT namespace is not supported
|
|
SELECT * FROM XMLTABLE('.'
|
|
PASSING '<foo/>'
|
|
COLUMNS a text PATH 'foo/namespace::node()');
|
|
a
|
|
--------------------------------------
|
|
http://www.w3.org/XML/1998/namespace
|
|
(1 row)
|
|
|
|
-- used in prepare statements
|
|
PREPARE pp AS
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
EXECUTE pp;
|
|
id | _id | country_name | country_id | region_id | size | unit | premier_name
|
|
----+-----+--------------+------------+-----------+------+------+---------------
|
|
1 | 1 | Australia | AU | 3 | | | not specified
|
|
2 | 2 | China | CN | 3 | | | not specified
|
|
3 | 3 | HongKong | HK | 3 | | | not specified
|
|
4 | 4 | India | IN | 3 | | | not specified
|
|
5 | 5 | Japan | JP | 3 | | | Sinzo Abe
|
|
6 | 6 | Singapore | SG | 3 | 791 | km | not specified
|
|
(6 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS "COUNTRY_NAME" text, "REGION_ID" int);
|
|
COUNTRY_NAME | REGION_ID
|
|
--------------+-----------
|
|
India | 3
|
|
Japan | 3
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id FOR ORDINALITY, "COUNTRY_NAME" text, "REGION_ID" int);
|
|
id | COUNTRY_NAME | REGION_ID
|
|
----+--------------+-----------
|
|
1 | India | 3
|
|
2 | Japan | 3
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id int PATH '@id', "COUNTRY_NAME" text, "REGION_ID" int);
|
|
id | COUNTRY_NAME | REGION_ID
|
|
----+--------------+-----------
|
|
4 | India | 3
|
|
5 | Japan | 3
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id int PATH '@id');
|
|
id
|
|
----
|
|
4
|
|
5
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id FOR ORDINALITY);
|
|
id
|
|
----
|
|
1
|
|
2
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id int PATH '@id', "COUNTRY_NAME" text, "REGION_ID" int, rawdata xml PATH '.');
|
|
id | COUNTRY_NAME | REGION_ID | rawdata
|
|
----+--------------+-----------+------------------------------------------------------------------
|
|
4 | India | 3 | <ROW id="4"> +
|
|
| | | <COUNTRY_ID>IN</COUNTRY_ID> +
|
|
| | | <COUNTRY_NAME>India</COUNTRY_NAME> +
|
|
| | | <REGION_ID>3</REGION_ID> +
|
|
| | | </ROW>
|
|
5 | Japan | 3 | <ROW id="5"> +
|
|
| | | <COUNTRY_ID>JP</COUNTRY_ID> +
|
|
| | | <COUNTRY_NAME>Japan</COUNTRY_NAME> +
|
|
| | | <REGION_ID>3</REGION_ID><PREMIER_NAME>Sinzo Abe</PREMIER_NAME>+
|
|
| | | </ROW>
|
|
(2 rows)
|
|
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS id int PATH '@id', "COUNTRY_NAME" text, "REGION_ID" int, rawdata xml PATH './*');
|
|
id | COUNTRY_NAME | REGION_ID | rawdata
|
|
----+--------------+-----------+-----------------------------------------------------------------------------------------------------------------------------
|
|
4 | India | 3 | <COUNTRY_ID>IN</COUNTRY_ID><COUNTRY_NAME>India</COUNTRY_NAME><REGION_ID>3</REGION_ID>
|
|
5 | Japan | 3 | <COUNTRY_ID>JP</COUNTRY_ID><COUNTRY_NAME>Japan</COUNTRY_NAME><REGION_ID>3</REGION_ID><PREMIER_NAME>Sinzo Abe</PREMIER_NAME>
|
|
(2 rows)
|
|
|
|
SELECT * FROM xmltable('/root' passing '<root><element>a1a<!-- aaaa -->a2a<?aaaaa?> <!--z--> bbbb<x>xxx</x>cccc</element></root>' COLUMNS element text);
|
|
element
|
|
----------------------
|
|
a1aa2a bbbbxxxcccc
|
|
(1 row)
|
|
|
|
SELECT * FROM xmltable('/root' passing '<root><element>a1a<!-- aaaa -->a2a<?aaaaa?> <!--z--> bbbb<x>xxx</x>cccc</element></root>' COLUMNS element text PATH 'element/text()'); -- should fail
|
|
ERROR: more than one value returned by column XPath expression
|
|
-- CDATA test
|
|
select * from xmltable('d/r' passing '<d><r><c><![CDATA[<hello> &"<>!<a>foo</a>]]></c></r><r><c>2</c></r></d>' columns c text);
|
|
c
|
|
-------------------------
|
|
<hello> &"<>!<a>foo</a>
|
|
2
|
|
(2 rows)
|
|
|
|
-- XML builtin entities
|
|
SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>'</ent></a><a><ent>"</ent></a><a><ent>&</ent></a><a><ent><</ent></a><a><ent>></ent></a></x>' COLUMNS ent text);
|
|
ent
|
|
-----
|
|
'
|
|
"
|
|
&
|
|
<
|
|
>
|
|
(5 rows)
|
|
|
|
SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>'</ent></a><a><ent>"</ent></a><a><ent>&</ent></a><a><ent><</ent></a><a><ent>></ent></a></x>' COLUMNS ent xml);
|
|
ent
|
|
------------------
|
|
<ent>'</ent>
|
|
<ent>"</ent>
|
|
<ent>&</ent>
|
|
<ent><</ent>
|
|
<ent>></ent>
|
|
(5 rows)
|
|
|
|
EXPLAIN (VERBOSE, COSTS OFF)
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
QUERY PLAN
|
|
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Nested Loop
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
-> Seq Scan on public.xmldata
|
|
Output: xmldata.data
|
|
-> Table Function Scan on "xmltable"
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
|
|
(7 rows)
|
|
|
|
-- test qual
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS "COUNTRY_NAME" text, "REGION_ID" int) WHERE "COUNTRY_NAME" = 'Japan';
|
|
COUNTRY_NAME | REGION_ID
|
|
--------------+-----------
|
|
Japan | 3
|
|
(1 row)
|
|
|
|
EXPLAIN (VERBOSE, COSTS OFF)
|
|
SELECT xmltable.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]' PASSING data COLUMNS "COUNTRY_NAME" text, "REGION_ID" int) WHERE "COUNTRY_NAME" = 'Japan';
|
|
QUERY PLAN
|
|
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Nested Loop
|
|
Output: "xmltable"."COUNTRY_NAME", "xmltable"."REGION_ID"
|
|
-> Seq Scan on public.xmldata
|
|
Output: xmldata.data
|
|
-> Table Function Scan on "xmltable"
|
|
Output: "xmltable"."COUNTRY_NAME", "xmltable"."REGION_ID"
|
|
Table Function Call: XMLTABLE(('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]'::text) PASSING (xmldata.data) COLUMNS "COUNTRY_NAME" text, "REGION_ID" integer)
|
|
Filter: ("xmltable"."COUNTRY_NAME" = 'Japan'::text)
|
|
(8 rows)
|
|
|
|
-- should to work with more data
|
|
INSERT INTO xmldata VALUES('<ROWS>
|
|
<ROW id="10">
|
|
<COUNTRY_ID>CZ</COUNTRY_ID>
|
|
<COUNTRY_NAME>Czech Republic</COUNTRY_NAME>
|
|
<REGION_ID>2</REGION_ID><PREMIER_NAME>Milos Zeman</PREMIER_NAME>
|
|
</ROW>
|
|
<ROW id="11">
|
|
<COUNTRY_ID>DE</COUNTRY_ID>
|
|
<COUNTRY_NAME>Germany</COUNTRY_NAME>
|
|
<REGION_ID>2</REGION_ID>
|
|
</ROW>
|
|
<ROW id="12">
|
|
<COUNTRY_ID>FR</COUNTRY_ID>
|
|
<COUNTRY_NAME>France</COUNTRY_NAME>
|
|
<REGION_ID>2</REGION_ID>
|
|
</ROW>
|
|
</ROWS>');
|
|
INSERT INTO xmldata VALUES('<ROWS>
|
|
<ROW id="20">
|
|
<COUNTRY_ID>EG</COUNTRY_ID>
|
|
<COUNTRY_NAME>Egypt</COUNTRY_NAME>
|
|
<REGION_ID>1</REGION_ID>
|
|
</ROW>
|
|
<ROW id="21">
|
|
<COUNTRY_ID>SD</COUNTRY_ID>
|
|
<COUNTRY_NAME>Sudan</COUNTRY_NAME>
|
|
<REGION_ID>1</REGION_ID>
|
|
</ROW>
|
|
</ROWS>');
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
id | _id | country_name | country_id | region_id | size | unit | premier_name
|
|
----+-----+----------------+------------+-----------+------+------+---------------
|
|
1 | 1 | Australia | AU | 3 | | | not specified
|
|
2 | 2 | China | CN | 3 | | | not specified
|
|
3 | 3 | HongKong | HK | 3 | | | not specified
|
|
4 | 4 | India | IN | 3 | | | not specified
|
|
5 | 5 | Japan | JP | 3 | | | Sinzo Abe
|
|
6 | 6 | Singapore | SG | 3 | 791 | km | not specified
|
|
10 | 1 | Czech Republic | CZ | 2 | | | Milos Zeman
|
|
11 | 2 | Germany | DE | 2 | | | not specified
|
|
12 | 3 | France | FR | 2 | | | not specified
|
|
20 | 1 | Egypt | EG | 1 | | | not specified
|
|
21 | 2 | Sudan | SD | 1 | | | not specified
|
|
(11 rows)
|
|
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified')
|
|
WHERE region_id = 2;
|
|
id | _id | country_name | country_id | region_id | size | unit | premier_name
|
|
----+-----+----------------+------------+-----------+------+------+---------------
|
|
10 | 1 | Czech Republic | CZ | 2 | | | Milos Zeman
|
|
11 | 2 | Germany | DE | 2 | | | not specified
|
|
12 | 3 | France | FR | 2 | | | not specified
|
|
(3 rows)
|
|
|
|
EXPLAIN (VERBOSE, COSTS OFF)
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE',
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified')
|
|
WHERE region_id = 2;
|
|
QUERY PLAN
|
|
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
Nested Loop
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
-> Seq Scan on public.xmldata
|
|
Output: xmldata.data
|
|
-> Table Function Scan on "xmltable"
|
|
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
|
|
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
|
|
Filter: ("xmltable".region_id = 2)
|
|
(8 rows)
|
|
|
|
-- should fail, NULL value
|
|
SELECT xmltable.*
|
|
FROM (SELECT data FROM xmldata) x,
|
|
LATERAL XMLTABLE('/ROWS/ROW'
|
|
PASSING data
|
|
COLUMNS id int PATH '@id',
|
|
_id FOR ORDINALITY,
|
|
country_name text PATH 'COUNTRY_NAME' NOT NULL,
|
|
country_id text PATH 'COUNTRY_ID',
|
|
region_id int PATH 'REGION_ID',
|
|
size float PATH 'SIZE' NOT NULL,
|
|
unit text PATH 'SIZE/@unit',
|
|
premier_name text PATH 'PREMIER_NAME' DEFAULT 'not specified');
|
|
ERROR: null is not allowed in column "size"
|
|
-- if all is ok, then result is empty
|
|
-- one line xml test
|
|
WITH
|
|
x AS (SELECT proname, proowner, procost::numeric, pronargs,
|
|
array_to_string(proargnames,',') as proargnames,
|
|
case when proargtypes <> '' then array_to_string(proargtypes::oid[],',') end as proargtypes
|
|
FROM pg_proc WHERE proname = 'f_leak'),
|
|
y AS (SELECT xmlelement(name proc,
|
|
xmlforest(proname, proowner,
|
|
procost, pronargs,
|
|
proargnames, proargtypes)) as proc
|
|
FROM x),
|
|
z AS (SELECT xmltable.*
|
|
FROM y,
|
|
LATERAL xmltable('/proc' PASSING proc
|
|
COLUMNS proname name,
|
|
proowner oid,
|
|
procost float,
|
|
pronargs int,
|
|
proargnames text,
|
|
proargtypes text))
|
|
SELECT * FROM z
|
|
EXCEPT SELECT * FROM x;
|
|
proname | proowner | procost | pronargs | proargnames | proargtypes
|
|
---------+----------+---------+----------+-------------+-------------
|
|
(0 rows)
|
|
|
|
-- multi line xml test, result should be empty too
|
|
WITH
|
|
x AS (SELECT proname, proowner, procost::numeric, pronargs,
|
|
array_to_string(proargnames,',') as proargnames,
|
|
case when proargtypes <> '' then array_to_string(proargtypes::oid[],',') end as proargtypes
|
|
FROM pg_proc),
|
|
y AS (SELECT xmlelement(name data,
|
|
xmlagg(xmlelement(name proc,
|
|
xmlforest(proname, proowner, procost,
|
|
pronargs, proargnames, proargtypes)))) as doc
|
|
FROM x),
|
|
z AS (SELECT xmltable.*
|
|
FROM y,
|
|
LATERAL xmltable('/data/proc' PASSING doc
|
|
COLUMNS proname name,
|
|
proowner oid,
|
|
procost float,
|
|
pronargs int,
|
|
proargnames text,
|
|
proargtypes text))
|
|
SELECT * FROM z
|
|
EXCEPT SELECT * FROM x;
|
|
proname | proowner | procost | pronargs | proargnames | proargtypes
|
|
---------+----------+---------+----------+-------------+-------------
|
|
(0 rows)
|
|
|
|
CREATE TABLE xmltest2(x xml, _path text);
|
|
INSERT INTO xmltest2 VALUES('<d><r><ac>1</ac></r></d>', 'A');
|
|
INSERT INTO xmltest2 VALUES('<d><r><bc>2</bc></r></d>', 'B');
|
|
INSERT INTO xmltest2 VALUES('<d><r><cc>3</cc></r></d>', 'C');
|
|
INSERT INTO xmltest2 VALUES('<d><r><dc>2</dc></r></d>', 'D');
|
|
SELECT xmltable.* FROM xmltest2, LATERAL xmltable('/d/r' PASSING x COLUMNS a int PATH '' || lower(_path) || 'c');
|
|
a
|
|
---
|
|
1
|
|
2
|
|
3
|
|
2
|
|
(4 rows)
|
|
|
|
SELECT xmltable.* FROM xmltest2, LATERAL xmltable(('/d/r/' || lower(_path) || 'c') PASSING x COLUMNS a int PATH '.');
|
|
a
|
|
---
|
|
1
|
|
2
|
|
3
|
|
2
|
|
(4 rows)
|
|
|
|
SELECT xmltable.* FROM xmltest2, LATERAL xmltable(('/d/r/' || lower(_path) || 'c') PASSING x COLUMNS a int PATH 'x' DEFAULT ascii(_path) - 54);
|
|
a
|
|
----
|
|
11
|
|
12
|
|
13
|
|
14
|
|
(4 rows)
|
|
|
|
-- XPath result can be boolean or number too
|
|
SELECT * FROM XMLTABLE('*' PASSING '<a>a</a>' COLUMNS a xml PATH '.', b text PATH '.', c text PATH '"hi"', d boolean PATH '. = "a"', e integer PATH 'string-length(.)');
|
|
a | b | c | d | e
|
|
----------+---+----+---+---
|
|
<a>a</a> | a | hi | t | 1
|
|
(1 row)
|
|
|
|
\x
|
|
SELECT * FROM XMLTABLE('*' PASSING '<e>pre<!--c1--><?pi arg?><![CDATA[&ent1]]><n2>&deep</n2>post</e>' COLUMNS x xml PATH '/e/n2', y xml PATH '/');
|
|
-[ RECORD 1 ]-----------------------------------------------------------
|
|
x | <n2>&deep</n2>
|
|
y | <e>pre<!--c1--><?pi arg?><![CDATA[&ent1]]><n2>&deep</n2>post</e>+
|
|
|
|
|
|
|
\x
|
|
SELECT * FROM XMLTABLE('.' PASSING XMLELEMENT(NAME a) columns a varchar(20) PATH '"<foo/>"', b xml PATH '"<foo/>"');
|
|
a | b
|
|
--------+--------------
|
|
<foo/> | <foo/>
|
|
(1 row)
|
|
|