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Mention that toplevel is part of pg_stat_statements key.
While at it, also document that toplevel is always true if pg_stat_statements.track is set to top. Author: Julien Rouhaud Reported-By: Fujii Masao Discussion: https://postgr.es/m/a878d5ea-64a7-485e-5d2f-177618ebc52d@oss.nttdata.com
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@ -46,8 +46,8 @@
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<para>
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The statistics gathered by the module are made available via a
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view named <structname>pg_stat_statements</structname>. This view
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contains one row for each distinct database ID, user ID and query
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ID (up to the maximum number of distinct statements that the module
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contains one row for each distinct database ID, user ID, query ID and
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toplevel (up to the maximum number of distinct statements that the module
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can track). The columns of the view are shown in
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<xref linkend="pgstatstatements-columns"/>.
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</para>
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@ -93,6 +93,8 @@
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</para>
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<para>
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True if the query was executed as a top level statement
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(if <varname>pg_stat_statements.track</varname> is set to
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<literal>all</literal>, otherwise always false)
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</para></entry>
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</row>
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