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<div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="statsql"></a>Database Statistics</h2></div></div></div><p>
The statistics utility can be used to print out information on
tables in a database. A detailed description of the statistics
utility is described at <a href="../api_reference/C/db_stat.html" class="olink">db_stat</a>
. This
section describes how to use the utility with a SQL database.
</p><p>
The first step in getting statistics on a table is to find the
internal name for the table. The internal table name is
<code class="literal">table#####</code>, where the number is the rootpage
number, which can be retrieved using the following SQL statement:
</p><code class="code">
SELECT rootpage FROM sqlite_master WHERE name='[table name]';
</code>
For example, if the root page is 10, the internal table name
will be <code class="literal">table00010</code>.
<p>
In order to run the <span class="command"><strong>db_stat</strong></span> utility,
first add a <a href="../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a>
file to the journal directory.
In the file, add the following line:
</p><code class="code">
add_data_dir ..
</code><p>
Then execute the following command in the directory
with the database:
<span class="command"><strong>db_stat -d [file name] -h [journal directory] -s [internal table name]</strong></span>.
That command will print out information on the table.
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