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These are refugees from doc_prototype. They can be rendered with the DITA Open Toolkit version 2.3.3 by: /tmp/dita-ot-2.3.3/bin/dita \ -i impala.ditamap \ -f html5 \ -o $(mktemp -d) \ -filter impala_html.ditaval Change-Id: I8861e99adc446f659a04463ca78c79200669484f Reviewed-on: http://gerrit.cloudera.org:8080/5014 Reviewed-by: John Russell <jrussell@cloudera.com> Tested-by: John Russell <jrussell@cloudera.com>
45 lines
1.7 KiB
XML
45 lines
1.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="having">
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<title>HAVING Clause</title>
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<prolog>
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<metadata>
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<data name="Category" value="Impala"/>
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<data name="Category" value="SQL"/>
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<data name="Category" value="Querying"/>
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<data name="Category" value="Aggregate Functions"/>
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<data name="Category" value="Developers"/>
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<data name="Category" value="Data Analysts"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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Performs a filter operation on a <codeph>SELECT</codeph> query, by examining the results of aggregation
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functions rather than testing each individual table row. Therefore, it is always used in conjunction with a
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function such as <codeph><xref href="impala_count.xml#count">COUNT()</xref></codeph>,
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<codeph><xref href="impala_sum.xml#sum">SUM()</xref></codeph>,
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<codeph><xref href="impala_avg.xml#avg">AVG()</xref></codeph>,
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<codeph><xref href="impala_min.xml#min">MIN()</xref></codeph>, or
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<codeph><xref href="impala_max.xml#max">MAX()</xref></codeph>, and typically with the
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<codeph><xref href="impala_group_by.xml#group_by">GROUP BY</xref></codeph> clause also.
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</p>
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<p conref="../shared/impala_common.xml#common/restrictions_blurb"/>
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<p rev="2.0.0">
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The filter expression in the <codeph>HAVING</codeph> clause cannot include a scalar subquery.
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</p>
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<p conref="../shared/impala_common.xml#common/related_info"/>
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<p>
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<xref href="impala_select.xml#select"/>,
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<xref href="impala_group_by.xml#group_by"/>,
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<xref href="impala_aggregate_functions.xml#aggregate_functions"/>
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</p>
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</conbody>
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</concept>
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