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doc: Add pg_stat_reset and related functions to index
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@ -1573,7 +1573,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_get_activity</function>(<type>integer</type>)</literal></entry>
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<entry><literal><function>pg_stat_get_activity</function>(<type>integer</type>)</literal><indexterm><primary>pg_stat_get_activity</primary></indexterm></entry>
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<entry><type>setof record</type></entry>
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<entry>
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Returns a record of information about the backend with the specified PID, or
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@ -1584,7 +1584,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_clear_snapshot()</function></literal></entry>
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<entry><literal><function>pg_stat_clear_snapshot()</function></literal><indexterm><primary>pg_stat_clear_snapshot</primary></indexterm></entry>
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<entry><type>void</type></entry>
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<entry>
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Discard the current statistics snapshot
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@ -1592,7 +1592,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_reset()</function></literal></entry>
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<entry><literal><function>pg_stat_reset()</function></literal><indexterm><primary>pg_stat_reset</primary></indexterm></entry>
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<entry><type>void</type></entry>
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<entry>
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Reset all statistics counters for the current database to zero
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@ -1601,7 +1601,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_reset_shared</function>(text)</literal></entry>
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<entry><literal><function>pg_stat_reset_shared</function>(text)</literal><indexterm><primary>pg_stat_reset_shared</primary></indexterm></entry>
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<entry><type>void</type></entry>
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<entry>
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Reset some cluster-wide statistics counters to zero, depending on the
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@ -1612,7 +1612,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_reset_single_table_counters</function>(oid)</literal></entry>
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<entry><literal><function>pg_stat_reset_single_table_counters</function>(oid)</literal><indexterm><primary>pg_stat_reset_single_table_counters</primary></indexterm></entry>
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<entry><type>void</type></entry>
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<entry>
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Reset statistics for a single table or index in the current database to
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@ -1621,7 +1621,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
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</row>
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<row>
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<entry><literal><function>pg_stat_reset_single_function_counters</function>(oid)</literal></entry>
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<entry><literal><function>pg_stat_reset_single_function_counters</function>(oid)</literal><indexterm><primary>pg_stat_reset_single_function_counters</primary></indexterm></entry>
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<entry><type>void</type></entry>
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<entry>
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Reset statistics for a single function in the current database to
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