Within a PL/SQL procedure, wrap a query or refcursor in HTML table
It seems really easy if you are using SQL*Plus to use
SQL> set markup html on;
and get some lovely results t开发者_如何学Goo the SQL*Plus window. we have an oracle job that runs overnight and sends an email of results to a number of people. I would like to wrap a sql statement in an HTML table to be in that message. What is the best way of doing that?
From posting over On the DBA site I got close to the answer that I was looking for. Tom Kyte has a great blog post with a function that does exactly what I was hoping for. In short here is what I implemented:
I created a function that took a sys_refcursor as a variable:
CREATE OR REPLACE FUNCTION fncRefCursor2HTML(rf SYS_REFCURSOR) RETURN CLOB
IS
lRetVal CLOB;
lHTMLOutput XMLType;
lXSL CLOB;
lXMLData XMLType;
lContext DBMS_XMLGEN.CTXHANDLE;
BEGIN
-- get a handle on the ref cursor --
lContext := DBMS_XMLGEN.NEWCONTEXT(rf);
-- setNullHandling to 1 (or 2) to allow null columns to be displayed --
DBMS_XMLGEN.setNullHandling(lContext,1);
-- create XML from ref cursor --
lXMLData := DBMS_XMLGEN.GETXMLTYPE(lContext,DBMS_XMLGEN.NONE);
-- this is a generic XSL for Oracle's default XML row and rowset tags --
-- " " is a non-breaking space --
lXSL := lXSL || q'[<?xml version="1.0" encoding="ISO-8859-1"?>]';
lXSL := lXSL || q'[<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">]';
lXSL := lXSL || q'[ <xsl:output method="html"/>]';
lXSL := lXSL || q'[ <xsl:template match="/">]';
lXSL := lXSL || q'[ <html>]';
lXSL := lXSL || q'[ <body>]';
lXSL := lXSL || q'[ <table border="1">]';
lXSL := lXSL || q'[ <tr bgcolor="cyan">]';
lXSL := lXSL || q'[ <xsl:for-each select="/ROWSET/ROW[1]/*">]';
lXSL := lXSL || q'[ <th><xsl:value-of select="name()"/></th>]';
lXSL := lXSL || q'[ </xsl:for-each>]';
lXSL := lXSL || q'[ </tr>]';
lXSL := lXSL || q'[ <xsl:for-each select="/ROWSET/*">]';
lXSL := lXSL || q'[ <tr>]';
lXSL := lXSL || q'[ <xsl:for-each select="./*">]';
lXSL := lXSL || q'[ <td><xsl:value-of select="text()"/> </td>]';
lXSL := lXSL || q'[ </xsl:for-each>]';
lXSL := lXSL || q'[ </tr>]';
lXSL := lXSL || q'[ </xsl:for-each>]';
lXSL := lXSL || q'[ </table>]';
lXSL := lXSL || q'[ </body>]';
lXSL := lXSL || q'[ </html>]';
lXSL := lXSL || q'[ </xsl:template>]';
lXSL := lXSL || q'[</xsl:stylesheet>]';
-- XSL transformation to convert XML to HTML --
lHTMLOutput := lXMLData.transform(XMLType(lXSL));
-- convert XMLType to Clob --
lRetVal := lHTMLOutput.getClobVal();
RETURN lRetVal;
END;
Then to test it in a Test window in PL/SQL Developer
declare
l_cursor sys_refcursor;
begin
open l_cursor for select * from employees;
:x:= fncRefCursor2HTML(l_cursor);
close l_cursor;
end;
This is something that I have been hoping to find for a long time. THANKS Tom Kyte!
One option is to use hypertext functions HTF:
set define off
create table so14t (id number, data varchar2(25));
insert all
into so14t values(101, 'one hundred & one')
into so14t values(202, 'two hundred & two')
into so14t values(303, 'three hundred & three')
select 1 from dual;
declare
v_html varchar2(32767);
begin
v_html := htf.tableopen;
for i in (select * from so14t) loop
v_html := v_html || htf.tablerowopen;
v_html := v_html || htf.tabledata(i.id);
v_html := v_html || htf.tabledata(htf.escape_sc(i.data));
v_html := v_html || htf.tablerowclose;
end loop;
v_html := v_html || htf.tableclose;
dbms_output.put_line(v_html);
end;
/
Prints (formatted for readability):
<TABLE ><TR><TD>101</TD><TD>one hundred & one</TD></TR>
<TR><TD>202</TD><TD>two hundred & two</TD></TR>
<TR><TD>303</TD><TD>three hundred & three</TD></TR></TABLE>
加载中,请稍侯......
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