<div id="docs-body">
 <div class="section">
  <div class="titlepage">
   <div>
    <div>
     <h3 class="title">
      <a name="performance-schema-summary-tables">
      </a>
      29.12.20 Performance Schema Summary Tables
     </h3>
    </div>
   </div>
  </div>
  <div class="toc">
   <dl class="toc">
    <dt>
     <span class="section">
      <a href="performance-schema-wait-summary-tables.html">
       29.12.20.1 Wait Event Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-stage-summary-tables.html">
       29.12.20.2 Stage Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-statement-summary-tables.html">
       29.12.20.3 Statement Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-statement-histogram-summary-tables.html">
       29.12.20.4 Statement Histogram Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-transaction-summary-tables.html">
       29.12.20.5 Transaction Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-objects-summary-global-by-type-table.html">
       29.12.20.6 Object Wait Summary Table
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-file-summary-tables.html">
       29.12.20.7 File I/O Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-table-wait-summary-tables.html">
       29.12.20.8 Table I/O and Lock Wait Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-socket-summary-tables.html">
       29.12.20.9 Socket Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-memory-summary-tables.html">
       29.12.20.10 Memory Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-error-summary-tables.html">
       29.12.20.11 Error Summary Tables
      </a>
     </span>
    </dt>
    <dt>
     <span class="section">
      <a href="performance-schema-status-variable-summary-tables.html">
       29.12.20.12 Status Variable Summary Tables
      </a>
     </span>
    </dt>
   </dl>
  </div>
  <p>
   Summary tables provide aggregated information for terminated
        events over time. The tables in this group summarize event data
        in different ways.
  </p>
  <p>
   Each summary table has grouping columns that determine how to
        group the data to be aggregated, and summary columns that
        contain the aggregated values. Tables that summarize events in
        similar ways often have similar sets of summary columns and
        differ only in the grouping columns used to determine how events
        are aggregated.
  </p>
  <p>
   Summary tables can be truncated with
   <a class="link" href="truncate-table.html" title="15.1.37 TRUNCATE TABLE Statement">
    <code class="literal">
     TRUNCATE TABLE
    </code>
   </a>
   . Generally, the
        effect is to reset the summary columns to 0 or
   <code class="literal">
    NULL
   </code>
   , not to remove rows. This enables you to
        clear collected values and restart aggregation. That might be
        useful, for example, after you have made a runtime configuration
        change. Exceptions to this truncation behavior are noted in
        individual summary table sections.
  </p>
  <h4>
   <a name="idm46045069365072">
   </a>
   Wait Event Summaries
  </h4>
  <div class="table">
   <a name="idm46045069364384">
   </a>
   <p class="title">
    <b>
     Table 29.5 Performance Schema Wait Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema wait event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_by_account_by_event_name
         </code>
        </a>
       </td>
       <td>
        Wait events per account and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_by_host_by_event_name
         </code>
        </a>
       </td>
       <td>
        Wait events per host name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_by_instance
         </code>
        </a>
       </td>
       <td>
        Wait events per instance
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_by_thread_by_event_name
         </code>
        </a>
       </td>
       <td>
        Wait events per thread and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_by_user_by_event_name
         </code>
        </a>
       </td>
       <td>
        Wait events per user name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-wait-summary-tables.html" title="29.12.20.1 Wait Event Summary Tables">
         <code class="literal">
          events_waits_summary_global_by_event_name
         </code>
        </a>
       </td>
       <td>
        Wait events per event name
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069340128">
   </a>
   Stage Summaries
  </h4>
  <div class="table">
   <a name="idm46045069339440">
   </a>
   <p class="title">
    <b>
     Table 29.6 Performance Schema Stage Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema stage event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-stage-summary-tables.html" title="29.12.20.2 Stage Summary Tables">
         <code class="literal">
          events_stages_summary_by_account_by_event_name
         </code>
        </a>
       </td>
       <td>
        Stage events per account and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-stage-summary-tables.html" title="29.12.20.2 Stage Summary Tables">
         <code class="literal">
          events_stages_summary_by_host_by_event_name
         </code>
        </a>
       </td>
       <td>
        Stage events per host name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-stage-summary-tables.html" title="29.12.20.2 Stage Summary Tables">
         <code class="literal">
          events_stages_summary_by_thread_by_event_name
         </code>
        </a>
       </td>
       <td>
        Stage waits per thread and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-stage-summary-tables.html" title="29.12.20.2 Stage Summary Tables">
         <code class="literal">
          events_stages_summary_by_user_by_event_name
         </code>
        </a>
       </td>
       <td>
        Stage events per user name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-stage-summary-tables.html" title="29.12.20.2 Stage Summary Tables">
         <code class="literal">
          events_stages_summary_global_by_event_name
         </code>
        </a>
       </td>
       <td>
        Stage waits per event name
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069318208">
   </a>
   Statement Summaries
  </h4>
  <div class="table">
   <a name="idm46045069317520">
   </a>
   <p class="title">
    <b>
     Table 29.7 Performance Schema Statement Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema statement event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-histogram-summary-tables.html" title="29.12.20.4 Statement Histogram Summary Tables">
         <code class="literal">
          events_statements_histogram_by_digest
         </code>
        </a>
       </td>
       <td>
        Statement histograms per schema and digest value
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-histogram-summary-tables.html" title="29.12.20.4 Statement Histogram Summary Tables">
         <code class="literal">
          events_statements_histogram_global
         </code>
        </a>
       </td>
       <td>
        Statement histogram summarized globally
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_account_by_event_name
         </code>
        </a>
       </td>
       <td>
        Statement events per account and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_digest
         </code>
        </a>
       </td>
       <td>
        Statement events per schema and digest value
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_host_by_event_name
         </code>
        </a>
       </td>
       <td>
        Statement events per host name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_program
         </code>
        </a>
       </td>
       <td>
        Statement events per stored program
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_thread_by_event_name
         </code>
        </a>
       </td>
       <td>
        Statement events per thread and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_by_user_by_event_name
         </code>
        </a>
       </td>
       <td>
        Statement events per user name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-statement-summary-tables.html" title="29.12.20.3 Statement Summary Tables">
         <code class="literal">
          events_statements_summary_global_by_event_name
         </code>
        </a>
       </td>
       <td>
        Statement events per event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-prepared-statements-instances-table.html" title="29.12.6.4 The prepared_statements_instances Table">
         <code class="literal">
          prepared_statements_instances
         </code>
        </a>
       </td>
       <td>
        Prepared statement instances and statistics
       </td>
      </tr>
     </tbody>
    </table>
   </div>
   <div class="table-contents">
    <table cellpadding="0" cellspacing="0" style="position: fixed; top: 0px; display: none; left: 401px; width: 739px;">
     <thead>
      <tr>
       <th style="width: 413.281px;">
        Table Name
       </th>
       <th style="width: 324.719px;">
        Description
       </th>
      </tr>
     </thead>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069280752">
   </a>
   Transaction Summaries
  </h4>
  <div class="table">
   <a name="idm46045069280064">
   </a>
   <p class="title">
    <b>
     Table 29.8 Performance Schema Transaction Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema transaction event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-transaction-summary-tables.html" title="29.12.20.5 Transaction Summary Tables">
         <code class="literal">
          events_transactions_summary_by_account_by_event_name
         </code>
        </a>
       </td>
       <td>
        Transaction events per account and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-transaction-summary-tables.html" title="29.12.20.5 Transaction Summary Tables">
         <code class="literal">
          events_transactions_summary_by_host_by_event_name
         </code>
        </a>
       </td>
       <td>
        Transaction events per host name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-transaction-summary-tables.html" title="29.12.20.5 Transaction Summary Tables">
         <code class="literal">
          events_transactions_summary_by_thread_by_event_name
         </code>
        </a>
       </td>
       <td>
        Transaction events per thread and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-transaction-summary-tables.html" title="29.12.20.5 Transaction Summary Tables">
         <code class="literal">
          events_transactions_summary_by_user_by_event_name
         </code>
        </a>
       </td>
       <td>
        Transaction events per user name and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-transaction-summary-tables.html" title="29.12.20.5 Transaction Summary Tables">
         <code class="literal">
          events_transactions_summary_global_by_event_name
         </code>
        </a>
       </td>
       <td>
        Transaction events per event name
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069258624">
   </a>
   Object Wait Summaries
  </h4>
  <div class="table">
   <a name="idm46045069257936">
   </a>
   <p class="title">
    <b>
     Table 29.9 Performance Schema Object Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema object event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-objects-summary-global-by-type-table.html" title="29.12.20.6 Object Wait Summary Table">
         <code class="literal">
          objects_summary_global_by_type
         </code>
        </a>
       </td>
       <td>
        Object summaries
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069248832">
   </a>
   File I/O Summaries
  </h4>
  <div class="table">
   <a name="idm46045069248144">
   </a>
   <p class="title">
    <b>
     Table 29.10 Performance Schema File I/O Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema file I/O event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-file-summary-tables.html" title="29.12.20.7 File I/O Summary Tables">
         <code class="literal">
          file_summary_by_event_name
         </code>
        </a>
       </td>
       <td>
        File events per event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-file-summary-tables.html" title="29.12.20.7 File I/O Summary Tables">
         <code class="literal">
          file_summary_by_instance
         </code>
        </a>
       </td>
       <td>
        File events per file instance
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069236080">
   </a>
   Table I/O and Lock Wait Summaries
  </h4>
  <div class="table">
   <a name="idm46045069235360">
   </a>
   <p class="title">
    <b>
     Table 29.11 Performance Schema Table I/O and Lock Wait Event
Summary Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema table I/O and lock event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-table-wait-summary-tables.html#performance-schema-table-io-waits-summary-by-index-usage-table" title="29.12.20.8.2 The table_io_waits_summary_by_index_usage Table">
         <code class="literal">
          table_io_waits_summary_by_index_usage
         </code>
        </a>
       </td>
       <td>
        Table I/O waits per index
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-table-wait-summary-tables.html#performance-schema-table-io-waits-summary-by-table-table" title="29.12.20.8.1 The table_io_waits_summary_by_table Table">
         <code class="literal">
          table_io_waits_summary_by_table
         </code>
        </a>
       </td>
       <td>
        Table I/O waits per table
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-table-wait-summary-tables.html#performance-schema-table-lock-waits-summary-by-table-table" title="29.12.20.8.3 The table_lock_waits_summary_by_table Table">
         <code class="literal">
          table_lock_waits_summary_by_table
         </code>
        </a>
       </td>
       <td>
        Table lock waits per table
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069220000">
   </a>
   Socket Summaries
  </h4>
  <div class="table">
   <a name="idm46045069219312">
   </a>
   <p class="title">
    <b>
     Table 29.12 Performance Schema Socket Event Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema socket event summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-socket-summary-tables.html" title="29.12.20.9 Socket Summary Tables">
         <code class="literal">
          socket_summary_by_event_name
         </code>
        </a>
       </td>
       <td>
        Socket waits and I/O per event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-socket-summary-tables.html" title="29.12.20.9 Socket Summary Tables">
         <code class="literal">
          socket_summary_by_instance
         </code>
        </a>
       </td>
       <td>
        Socket waits and I/O per instance
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069207200">
   </a>
   Memory Summaries
  </h4>
  <div class="table">
   <a name="idm46045069206512">
   </a>
   <p class="title">
    <b>
     Table 29.13 Performance Schema Memory Operation Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema memory operation summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-memory-summary-tables.html" title="29.12.20.10 Memory Summary Tables">
         <code class="literal">
          memory_summary_by_account_by_event_name
         </code>
        </a>
       </td>
       <td>
        Memory operations per account and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-memory-summary-tables.html" title="29.12.20.10 Memory Summary Tables">
         <code class="literal">
          memory_summary_by_host_by_event_name
         </code>
        </a>
       </td>
       <td>
        Memory operations per host and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-memory-summary-tables.html" title="29.12.20.10 Memory Summary Tables">
         <code class="literal">
          memory_summary_by_thread_by_event_name
         </code>
        </a>
       </td>
       <td>
        Memory operations per thread and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-memory-summary-tables.html" title="29.12.20.10 Memory Summary Tables">
         <code class="literal">
          memory_summary_by_user_by_event_name
         </code>
        </a>
       </td>
       <td>
        Memory operations per user and event name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-memory-summary-tables.html" title="29.12.20.10 Memory Summary Tables">
         <code class="literal">
          memory_summary_global_by_event_name
         </code>
        </a>
       </td>
       <td>
        Memory operations globally per event name
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069185280">
   </a>
   Error Summaries
  </h4>
  <div class="table">
   <a name="idm46045069184592">
   </a>
   <p class="title">
    <b>
     Table 29.14 Performance Schema Error Summary Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema error summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-error-summary-tables.html" title="29.12.20.11 Error Summary Tables">
         <code class="literal">
          events_errors_summary_by_account_by_error
         </code>
        </a>
       </td>
       <td>
        Errors per account and error code
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-error-summary-tables.html" title="29.12.20.11 Error Summary Tables">
         <code class="literal">
          events_errors_summary_by_host_by_error
         </code>
        </a>
       </td>
       <td>
        Errors per host and error code
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-error-summary-tables.html" title="29.12.20.11 Error Summary Tables">
         <code class="literal">
          events_errors_summary_by_thread_by_error
         </code>
        </a>
       </td>
       <td>
        Errors per thread and error code
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-error-summary-tables.html" title="29.12.20.11 Error Summary Tables">
         <code class="literal">
          events_errors_summary_by_user_by_error
         </code>
        </a>
       </td>
       <td>
        Errors per user and error code
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-error-summary-tables.html" title="29.12.20.11 Error Summary Tables">
         <code class="literal">
          events_errors_summary_global_by_error
         </code>
        </a>
       </td>
       <td>
        Errors per error code
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
  <h4>
   <a name="idm46045069163488">
   </a>
   Status Variable Summaries
  </h4>
  <div class="table">
   <a name="idm46045069162768">
   </a>
   <p class="title">
    <b>
     Table 29.15 Performance Schema Error Status Variable Summary
Tables
    </b>
   </p>
   <div class="table-contents">
    <table frame="box" rules="all" summary="A reference that lists all Performance Schema status variable summary tables.">
     <colgroup>
      <col style="width: 28%"/>
      <col style="width: 71%"/>
     </colgroup>
     <thead>
      <tr>
       <th>
        Table Name
       </th>
       <th>
        Description
       </th>
      </tr>
     </thead>
     <tbody>
      <tr>
       <td>
        <a class="link" href="performance-schema-status-variable-summary-tables.html" title="29.12.20.12 Status Variable Summary Tables">
         <code class="literal">
          status_by_account
         </code>
        </a>
       </td>
       <td>
        Session status variables per account
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-status-variable-summary-tables.html" title="29.12.20.12 Status Variable Summary Tables">
         <code class="literal">
          status_by_host
         </code>
        </a>
       </td>
       <td>
        Session status variables per host name
       </td>
      </tr>
      <tr>
       <td>
        <a class="link" href="performance-schema-status-variable-summary-tables.html" title="29.12.20.12 Status Variable Summary Tables">
         <code class="literal">
          status_by_user
         </code>
        </a>
       </td>
       <td>
        Session status variables per user name
       </td>
      </tr>
     </tbody>
    </table>
   </div>
  </div>
  <br class="table-break"/>
 </div>
 <br/>
</div>
