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Doc: Fix and tweak documentation for ANALYZE reporting 

The docs had some typos and grammar mistakes, and its indentation was
inconsistent.

Author: Amit Langote, Justin Pryzby
Discussion: https://postgr.es/m/20200116151930.GM26045@telsasoft.com
This commit is contained in:
Michael Paquier 2020-01-23 17:01:46 +09:00
parent f942dfb952
commit 5ba40b6231
1 changed files with 54 additions and 52 deletions
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106
doc/src/sgml/monitoring.sgml
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@ -3571,51 +3571,53 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
<entry><structfield>sample_blks_total</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Total number of heap blocks that will be sampled.
Total number of heap blocks that will be sampled.
</entry>
</row>
<row>
<entry><structfield>sample_blks_scanned</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Number of heap blocks scanned.
Number of heap blocks scanned.
</entry>
</row>
<row>
<entry><structfield>ext_stats_total</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Number of extended statistics.
Number of extended statistics.
</entry>
</row>
<row>
<entry><structfield>ext_stats_computed</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Number of computed extended statistics computed. This counter only advances when
the phase is <literal>computing extended statistics</literal>.
Number of extended statistics computed. This counter only advances
when the phase is <literal>computing extended statistics</literal>.
</entry>
</row>
<row>
<entry><structfield>child_tables_total</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Number of child tables.
Number of child tables.
</entry>
</row>
<row>
<entry><structfield>child_tables_done</structfield></entry>
<entry><type>bigint</type></entry>
<entry>
Number of child tables scanned. This counter only advances when the phase
is <literal>acquiring inherited sample rows</literal>.
Number of child tables scanned. This counter only advances when the
phase is <literal>acquiring inherited sample rows</literal>.
</entry>
</row>
<row>
<entry><structfield>current_child_table_relid</structfield></entry>
<entry><type>oid</type></entry>
<entry>OID of the child table currently being scanned. This field is only valid when
the phase is <literal>computing extended statistics</literal>.
<entry>
OID of the child table currently being scanned. This field is
only valid when the phase is
<literal>acquiring inherited sample rows</literal>.
</entry>
</row>
</tbody>
@ -3626,58 +3628,58 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid,
<title>ANALYZE phases</title>
<tgroup cols="2">
<thead>
<row>
<row>
<entry>Phase</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>initializing</literal></entry>
<entry>
<tbody>
<row>
<entry><literal>initializing</literal></entry>
<entry>
The command is preparing to begin scanning the heap. This phase is
expected to be very brief.
</entry>
</row>
<row>
<entry><literal>acquiring sample rows</literal></entry>
<entry>
</entry>
</row>
<row>
<entry><literal>acquiring sample rows</literal></entry>
<entry>
The command is currently scanning the table given by
<structfield>current_relid</structfield> to obtain sample rows.
</entry>
</row>
<row>
<entry><literal>acquiring inherited sample rows</literal></entry>
<entry>
The command is currently scanning child tables to obtain sample rows. Columns
<structfield>child_tables_total</structfield>,
<structfield>relid</structfield> to obtain sample rows.
</entry>
</row>
<row>
<entry><literal>acquiring inherited sample rows</literal></entry>
<entry>
The command is currently scanning child tables to obtain sample rows.
Columns <structfield>child_tables_total</structfield>,
<structfield>child_tables_done</structfield>, and
<structfield>current_child_table_relid</structfield> contain the progress
information for this phase.
</entry>
</row>
<row>
<entry><literal>computing statistics</literal></entry>
<entry>
The command is computing statistics from the samples rows obtained during
the table scan.
</entry>
</row>
<row>
<entry><literal>computing extended statistics</literal></entry>
<entry>
The command is computing extended statistics from the samples rows obtained
durring the table scan.
</entry>
</row>
<row>
<entry><literal>finalizing analyze</literal></entry>
<entry>
<structfield>current_child_table_relid</structfield> contain the
progress information for this phase.
</entry>
</row>
<row>
<entry><literal>computing statistics</literal></entry>
<entry>
The command is computing statistics from the sample rows obtained
during the table scan.
</entry>
</row>
<row>
<entry><literal>computing extended statistics</literal></entry>
<entry>
The command is computing extended statistics from the sample rows
obtained during the table scan.
</entry>
</row>
<row>
<entry><literal>finalizing analyze</literal></entry>
<entry>
The command is updating pg_class. When this phase is completed,
<command>ANALYZE</command> will end.
</entry>
</row>
</tbody>
</entry>
</row>
</tbody>
</tgroup>
</table>