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POGetting XML from Five Different Oracle Tables
 

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  1. POGetting XML from Five Different Oracle Tables
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    <p>I need to get xml like </p> <pre><code>&lt;dataset code="123" title="" pubcode="456" minrows="0"&gt; &lt;schema code="s1" /&gt; &lt;!-- can be one --&gt; &lt;rowset code="rs1" /&gt; &lt;!-- can be one --&gt; &lt;sorter&gt; &lt;!-- field can be MORE than one --&gt; &lt;field name="field1" order="o1"/&gt; &lt;field name="field2" order="o2"/&gt; &lt;/sorter&gt; &lt;!-- filter can be MORE than one --&gt; &lt;filter type="filter1" value="val1" /&gt; &lt;filter type="filter2" value="val2" /&gt; &lt;/dataset&gt; </code></pre> <p>Where each tag corresponds to a a separate table. And each attribute in that tag is a column in the corresponding table Have written below sql for same</p> <pre><code> SELECT XMLELEMENT(NAME "dataset", XMLAttributes(ds.DataSet_Code AS "code",ds.DataSet_Title as "title",ds.pub_code as "pubcode",ds.Min_Rows as "minrowss"), XMLFOREST( (SELECT XMLElement("schema", XMLAttributes(fs.schema_code AS "code")) FROM File_Schema fs WHERE fr.dataset_code = ds.dataset_code), (SELECT XMLElement("rowset", XMLAttributes(fr.rowset_code AS "code")) FROM File_RowSet fr WHERE fr.dataset_code = ds.dataset_code), (SELECT XMLELEMENT(NAME "sorter", XMLAGG(XMLELEMENT(NAME "field", XMLATTRIBUTES(fsf.field_name AS "name",fsf.field_order AS "order") ) ) ) FROM File_sorter_field fsf WHERE fsf.dataset_code=ds.dataset_code), (SELECT XMLAGG(XMLELEMENT(NAME "filter", XMLATTRIBUTES(type AS "type",value AS "value"))) FROM File_Filter ff where ff.dataset_code=ds.dataset_code) )) FROM File_Product fp , File_DataSet ds WHERE fp.File_Name = ds.File_Name and fp.File_Name = 'abc' and ds.dataset_code ='123' ; </code></pre> <p>for which I get error like below</p> <pre><code> ORA-19208: parameter 1 of function XMLFOREST must be aliased 19208. 00000 - "parameter %s of function %s must be aliased" *Cause: The indicated parameter of the XML generation function has not been aliased, although it is an expression. *Action: Specify an alias for the expression using the AS clause. Error at Line: 19 Column: 5 </code></pre> <p>any help appreciated</p> <p><strong>as per KPater87 modified query to</strong> </p> <pre><code>SELECT XMLELEMENT(NAME "dataset", XMLAttributes(ds.DataSet_Code AS "code",ds.DataSet_Title as "title",ds.pub_code as "pubcode",ds.Min_Rows as "minrowss"), XMLConcat( SELECT XMLElement("schema", XMLAttributes(fs.schema_code AS "code")) FROM File_Schema fs WHERE fs.dataset_code = ds.dataset_code, SELECT XMLElement("rowset", XMLAttributes(fr.rowset_code AS "code")) FROM File_RowSet fr WHERE fr.dataset_code = ds.dataset_code, SELECT XMLELEMENT(NAME "sorter", XMLAGG(XMLELEMENT(NAME "field", XMLATTRIBUTES(fsf.field_name AS "name",fsf.field_order AS "order") ) ) ) FROM File_sorter_field fsf WHERE fsf.dataset_code=ds.dataset_code, SELECT XMLAGG(XMLELEMENT(NAME "filter", XMLATTRIBUTES(type AS "type",value AS "value"))) FROM File_Filter ff where ff.dataset_code=ds.dataset_code )) FROM File_DataSet ds WHERE ds.File_Name = 'abc' and ds.dataset_code ='123' ; </code></pre> <p>still get error </p> <p>ORA-00936: missing expression 00936. 00000 - "missing expression" *Cause:<br> *Action: Error at Line: 4 Column: 28</p>
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