vpruthi/doc-exports
1
0
Fork 0
forked from docs/doc-exports
Code Pull Requests Activity
doc-exports/docs/dws/dev/dws_04_0397.html
Lu, Huayi a24ca60074 DWS DEVELOPER 811 version 
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2023-01-19 13:37:49 +00:00

144 lines
22 KiB
HTML
Raw Blame History

<a name="EN-US_TOPIC_0000001098974816"></a><a name="EN-US_TOPIC_0000001098974816"></a>
<h1 class="topictitle1">Real-time TopSQL</h1>
<div id="body1500282066544"><p id="EN-US_TOPIC_0000001098974816__p654665313713">You can query real-time Top SQL in real-time resource monitoring views at different levels. The real-time resource monitoring view records the resource usage (including memory, disk, CPU time, and I/O) and performance alarm information during job running.</p>
<p id="EN-US_TOPIC_0000001098974816__p1926013415223">The following table describes the external interfaces of the real-time views.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000001098974816__table16116143418462"></a><a name="table16116143418462"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001098974816__table16116143418462" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Real-time resource monitoring views</caption><thead align="left"><tr id="EN-US_TOPIC_0000001098974816__row2269163474610"><th align="left" class="cellrowborder" valign="top" width="22.397760223977603%" id="mcps1.3.3.2.4.1.1"><p id="EN-US_TOPIC_0000001098974816__p8269434174616">Level</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="22.397760223977603%" id="mcps1.3.3.2.4.1.2"><p id="EN-US_TOPIC_0000001098974816__p1926911343463">Monitored Node</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="55.2044795520448%" id="mcps1.3.3.2.4.1.3"><p id="EN-US_TOPIC_0000001098974816__p8134194117326">View</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001098974816__row152692034164618"><td class="cellrowborder" rowspan="2" valign="top" width="22.397760223977603%" headers="mcps1.3.3.2.4.1.1 "><p id="EN-US_TOPIC_0000001098974816__p102691034154612">Query level/perf level</p>
</td>
<td class="cellrowborder" valign="top" width="22.397760223977603%" headers="mcps1.3.3.2.4.1.2 "><p id="EN-US_TOPIC_0000001098974816__p32693347462">Current CN</p>
</td>
<td class="cellrowborder" valign="top" width="55.2044795520448%" headers="mcps1.3.3.2.4.1.3 "><p id="EN-US_TOPIC_0000001098974816__p326915345461"><a href="dws_04_0706.html">GS_WLM_SESSION_STATISTICS</a></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row13270113404615"><td class="cellrowborder" valign="top" headers="mcps1.3.3.2.4.1.1 "><p id="EN-US_TOPIC_0000001098974816__p1270734194614">All CNs</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.3.2.4.1.2 "><p id="EN-US_TOPIC_0000001098974816__p13270203414462"><a href="dws_04_0841.html">PGXC_WLM_SESSION_STATISTICS</a></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row227114349461"><td class="cellrowborder" rowspan="2" valign="top" width="22.397760223977603%" headers="mcps1.3.3.2.4.1.1 "><p id="EN-US_TOPIC_0000001098974816__p1527143494613">Operator level</p>
</td>
<td class="cellrowborder" valign="top" width="22.397760223977603%" headers="mcps1.3.3.2.4.1.2 "><p id="EN-US_TOPIC_0000001098974816__p4271123411465">Current CN</p>
</td>
<td class="cellrowborder" valign="top" width="55.2044795520448%" headers="mcps1.3.3.2.4.1.3 "><p id="EN-US_TOPIC_0000001098974816__p162710344467"><a href="dws_04_0703.html">GS_WLM_OPERATOR_STATISTICS</a></p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row927116341462"><td class="cellrowborder" valign="top" headers="mcps1.3.3.2.4.1.1 "><p id="EN-US_TOPIC_0000001098974816__p927183474616">All CNs</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.3.2.4.1.2 "><p id="EN-US_TOPIC_0000001098974816__p1427112347460"><a href="dws_04_0838.html">PGXC_WLM_OPERATOR_STATISTICS</a></p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="note" id="EN-US_TOPIC_0000001098974816__n7a9652a1f8594abf8cd88b657df7f214"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001098974816__ul2046120281910"><li id="EN-US_TOPIC_0000001098974816__li13474165412533">The view level is determined by the resource monitoring level, that is, the <a href="dws_04_0922.html#EN-US_TOPIC_0000001145694507__section153571329142612">resource_track_level</a> configuration.</li><li id="EN-US_TOPIC_0000001098974816__li541810241581">The perf and operator levels affect the values of the <strong id="EN-US_TOPIC_0000001098974816__b109610138241">query_plan</strong> and <strong id="EN-US_TOPIC_0000001098974816__b724512182244">warning</strong> columns in <a href="dws_04_0706.html">GS_WLM_SESSION_STATISTICS</a>/<a href="dws_04_0839.html">PGXC_WLM_SESSION_INFO</a>. For details, see <a href="dws_04_0446.html">SQL Self-Diagnosis</a>.</li><li id="EN-US_TOPIC_0000001098974816__li5461102121920">Prefixes <strong id="EN-US_TOPIC_0000001098974816__b842352706112930">gs</strong> and <strong id="EN-US_TOPIC_0000001098974816__b842352706112934">pgxc</strong> indicate views showing single CN information and those showing cluster information, respectively. Common users can log in to a CN in the cluster to query only views with the <strong id="EN-US_TOPIC_0000001098974816__b09977810154">gs</strong> prefix.</li><li id="EN-US_TOPIC_0000001098974816__li9397175161910">When you query this type of views, there will be network latency, because the views obtain resource usage in real time.</li><li id="EN-US_TOPIC_0000001098974816__li11892347154112">If instance fault occurs, some SQL statement information may fail to be recorded in real-time resource monitoring views.</li><li id="EN-US_TOPIC_0000001098974816__li12942257154712"><a name="EN-US_TOPIC_0000001098974816__li12942257154712"></a><a name="li12942257154712"></a>SQL statements are recorded in real-time resource monitoring views as follows:<ul id="EN-US_TOPIC_0000001098974816__ul103140232483"><li id="EN-US_TOPIC_0000001098974816__li9187131204818">DDL statements are not recorded, such as the execution of <strong id="EN-US_TOPIC_0000001098974816__b673511168113">CREATE</strong>, <strong id="EN-US_TOPIC_0000001098974816__b18737171617112">ALTER</strong>, <strong id="EN-US_TOPIC_0000001098974816__b573781612119">DROP</strong>, <strong id="EN-US_TOPIC_0000001098974816__b673841619111">GRANT</strong>, <strong id="EN-US_TOPIC_0000001098974816__b10739191613114">REVOKE</strong>, and <strong id="EN-US_TOPIC_0000001098974816__b13740716718">VACUUM</strong> statements.</li><li id="EN-US_TOPIC_0000001098974816__li291031819217">DML statements are recorded, including:<ul id="EN-US_TOPIC_0000001098974816__ul1181627122110"><li id="EN-US_TOPIC_0000001098974816__li854324572112">the execution of <strong id="EN-US_TOPIC_0000001098974816__b119611531131914">SELECT</strong>, <strong id="EN-US_TOPIC_0000001098974816__b996763117197">INSERT</strong>, <strong id="EN-US_TOPIC_0000001098974816__b10967143111197">UPDATE</strong>, and <strong id="EN-US_TOPIC_0000001098974816__b196816315193">DELETE</strong></li><li id="EN-US_TOPIC_0000001098974816__li1735919495211">the execution of <strong id="EN-US_TOPIC_0000001098974816__b1163217419194">EXPLAIN ANALYZE</strong> and <strong id="EN-US_TOPIC_0000001098974816__b36321841161913">EXPLAIN PERFORMANCE</strong></li><li id="EN-US_TOPIC_0000001098974816__li1441016133813">the use of a query-level/perf-level view, which also supports the <strong id="EN-US_TOPIC_0000001098974816__b124512491787">CREATE TABLE AS</strong> syntax.</li></ul>
</li><li id="EN-US_TOPIC_0000001098974816__li7710585482">Statements in functions and stored procedures and statements used for calling functions and stored procedures are recorded. Statements in loop bodies (if any) of functions and stored procedures are not recorded.</li><li id="EN-US_TOPIC_0000001098974816__li6414171018483">Statements in anonymous blocks are not recorded.</li><li id="EN-US_TOPIC_0000001098974816__li11207121574815">Statements in transaction blocks are recorded. Statements in loop bodies (if any) of transaction blocks are not recorded.</li><li id="EN-US_TOPIC_0000001098974816__li13429101018253">Cursor statements are recorded.</li><li id="EN-US_TOPIC_0000001098974816__li173571617104518">Jobs in a redistribution process are not monitored.</li></ul>
</li></ul>
</div></div>
<div class="section" id="EN-US_TOPIC_0000001098974816__saa63a158e85e40e68a18bd4688ead5b4"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0000001098974816__ubc04aa478573496d9f6b686ff3b65df7"><li id="EN-US_TOPIC_0000001098974816__lb9997f9dc8cf4ceba6645db629a401d7">The GUC parameter <span id="EN-US_TOPIC_0000001098974816__ph4109115920243">enable_resource_track</span> is set to <strong id="EN-US_TOPIC_0000001098974816__b1634323194317">on</strong>. The default value is <strong id="EN-US_TOPIC_0000001098974816__b18341223204318">on</strong>.</li><li id="EN-US_TOPIC_0000001098974816__li1811301554419">The GUC parameter <a href="dws_04_0922.html#EN-US_TOPIC_0000001145694507__section153571329142612">resource_track_level</a> is set to <strong id="EN-US_TOPIC_0000001098974816__b842352706182051">query</strong>, <strong id="EN-US_TOPIC_0000001098974816__b12406108143614">perf</strong>, or <strong id="EN-US_TOPIC_0000001098974816__b842352706182054">operator</strong>. The default value is <strong id="EN-US_TOPIC_0000001098974816__b842352706182059">query</strong>.</li><li id="EN-US_TOPIC_0000001098974816__li1971045485">Job monitoring rules are as follows:<ul id="EN-US_TOPIC_0000001098974816__ul1955111017919"><li id="EN-US_TOPIC_0000001098974816__li85518102919">Jobs whose execution cost estimated by the optimizer is greater than or equal to <a href="dws_04_0922.html#EN-US_TOPIC_0000001145694507__section1089022732713">resource_track_cost</a>.</li><li id="EN-US_TOPIC_0000001098974816__li7116152219914">Long query jobs</li></ul>
</li><li id="EN-US_TOPIC_0000001098974816__ldef0eb69efa7404ba3c18ccfdc671f6a">If the Cgroups function is properly loaded, you can run the <strong id="EN-US_TOPIC_0000001098974816__b1268014288479">gs_cgroup -P</strong> command to view information about Cgroups.</li></ul>
<p id="EN-US_TOPIC_0000001098974816__p192091357195311">In the preceding prerequisites, enable_resource_track is a system-level parameter that specifies whether to enable resource monitoring. <a href="dws_04_0922.html#EN-US_TOPIC_0000001145694507__section153571329142612">resource_track_level</a> is a session-level parameter. You can set the resource monitoring level of a session as needed. The following table describes the values of the two parameters.</p>
<div class="tablenoborder"><a name="EN-US_TOPIC_0000001098974816__table874434715481"></a><a name="table874434715481"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001098974816__table874434715481" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Setting the resource monitoring level to collect statistics</caption><thead align="left"><tr id="EN-US_TOPIC_0000001098974816__row1782164764814"><th align="left" class="cellrowborder" valign="top" width="30.39%" id="mcps1.3.5.4.2.5.1.1"><p id="EN-US_TOPIC_0000001098974816__p5821947134818">enable_resource_track</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="29.270000000000003%" id="mcps1.3.5.4.2.5.1.2"><p id="EN-US_TOPIC_0000001098974816__p12821144724815">resource_track_level</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="20.830000000000002%" id="mcps1.3.5.4.2.5.1.3"><p id="EN-US_TOPIC_0000001098974816__p108212047154815">Query-Level Information</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="19.509999999999998%" id="mcps1.3.5.4.2.5.1.4"><p id="EN-US_TOPIC_0000001098974816__p1821194714489">Operator-Level Information</p>
</th>
</tr>
</thead>
<tbody><tr id="EN-US_TOPIC_0000001098974816__row2082115471488"><td class="cellrowborder" rowspan="4" valign="top" width="30.39%" headers="mcps1.3.5.4.2.5.1.1 "><p id="EN-US_TOPIC_0000001098974816__p1582314712480">on(default)</p>
</td>
<td class="cellrowborder" valign="top" width="29.270000000000003%" headers="mcps1.3.5.4.2.5.1.2 "><p id="EN-US_TOPIC_0000001098974816__p88231547194811">none</p>
</td>
<td class="cellrowborder" valign="top" width="20.830000000000002%" headers="mcps1.3.5.4.2.5.1.3 "><p id="EN-US_TOPIC_0000001098974816__p1682314744812">Not collected</p>
</td>
<td class="cellrowborder" valign="top" width="19.509999999999998%" headers="mcps1.3.5.4.2.5.1.4 "><p id="EN-US_TOPIC_0000001098974816__p2823114724816">Not collected</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row8823104754813"><td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.1 "><p id="EN-US_TOPIC_0000001098974816__p15823104710485">query(default)</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.2 "><p id="EN-US_TOPIC_0000001098974816__p78236476485">Collected</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.3 "><p id="EN-US_TOPIC_0000001098974816__p1782312479480">Not collected</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row1721717445116"><td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.1 "><p id="EN-US_TOPIC_0000001098974816__p62171044151115">perf</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.2 "><p id="EN-US_TOPIC_0000001098974816__p17217164451112">Collected</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.3 "><p id="EN-US_TOPIC_0000001098974816__p16217124471113">Not collected</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row128231477483"><td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.1 "><p id="EN-US_TOPIC_0000001098974816__p882394754817">operator</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.2 "><p id="EN-US_TOPIC_0000001098974816__p582317473486">Collected</p>
</td>
<td class="cellrowborder" valign="top" headers="mcps1.3.5.4.2.5.1.3 "><p id="EN-US_TOPIC_0000001098974816__p58231247164818">Collected</p>
</td>
</tr>
<tr id="EN-US_TOPIC_0000001098974816__row1182384712487"><td class="cellrowborder" valign="top" width="30.39%" headers="mcps1.3.5.4.2.5.1.1 "><p id="EN-US_TOPIC_0000001098974816__p19823114724815">off</p>
</td>
<td class="cellrowborder" valign="top" width="29.270000000000003%" headers="mcps1.3.5.4.2.5.1.2 "><p id="EN-US_TOPIC_0000001098974816__p148231647184820">none/query/operator</p>
</td>
<td class="cellrowborder" valign="top" width="20.830000000000002%" headers="mcps1.3.5.4.2.5.1.3 "><p id="EN-US_TOPIC_0000001098974816__p1882317479487">Not collected</p>
</td>
<td class="cellrowborder" valign="top" width="19.509999999999998%" headers="mcps1.3.5.4.2.5.1.4 "><p id="EN-US_TOPIC_0000001098974816__p19823174794812">Not collected</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001098974816__sedaa25b8495d4cb9ab8805916ec54d43"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001098974816__o0e362c38e9114b84a7d726ebf9c31299"><li id="EN-US_TOPIC_0000001098974816__l3436d26fb27a4c0b99ef4871df1d1190"><span>Query for the real-time CPU information in the <strong id="EN-US_TOPIC_0000001098974816__b1835482117489">gs_session_cpu_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__s5064e257bf524899811bc00deb24263e"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">gs_session_cpu_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__l5dadd686e5e54eea92acceb0453c06cc"><span>Query for the real-time memory information in the <strong id="EN-US_TOPIC_0000001098974816__b54545422478">gs_session_memory_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__s0a043415e5f24cbfa14b931c1cfae1cb"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">gs_session_memory_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__l546512205edb426780ce8a9d3afd6d45"><span>Query for the real-time resource information about the current CN in the <strong id="EN-US_TOPIC_0000001098974816__b7800141244717">gs_wlm_session_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__saa5937f152e644e0bd3ebaf47805e1a5"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">gs_wlm_session_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__l1ec2d6e86b894dd3b1c2e8f9d318be89"><span>Query for the real-time resource information about all CNs in the <strong id="EN-US_TOPIC_0000001098974816__b7878851144612">pgxc_wlm_session_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__s27fee00824544e709ed0948738c5d511"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">pgxc_wlm_session_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__li6506636184212"><span>Query for the real-time resource information about job operators on the current CN in the <strong id="EN-US_TOPIC_0000001098974816__b35695198463">gs_wlm_operator_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__screen13508193611424"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">gs_wlm_operator_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__li16168124584215"><span>Query for the real-time resource information about job operators on all CNs in the <strong id="EN-US_TOPIC_0000001098974816__b6527657184514">pgxc_wlm_operator_statistics</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__screen102271236181310"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">pgxc_wlm_operator_statistics</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__li6227153691312"><span>Query for the load management information about the jobs executed by the current user in the <strong id="EN-US_TOPIC_0000001098974816__b1942523435">PG_SESSION_WLMSTAT</strong> view.</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__screen16280113181415"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">pg_session_wlmstat</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li><li id="EN-US_TOPIC_0000001098974816__li1128041391410"><span>Query the job execution status of the current user on each CN in the <strong id="EN-US_TOPIC_0000001098974816__b783008183417">pgxc_wlm_workload_records</strong> view (this view is available when the dynamic load function is enabled, that is, <strong id="EN-US_TOPIC_0000001098974816__b1283116873420">enable_dynamic_workload</strong> is set to <strong id="EN-US_TOPIC_0000001098974816__b68319863417">on</strong>).</span><p><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001098974816__screen128010136142"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">SELECT</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="n">pgxc_wlm_workload_records</span><span class="p">;</span><span class="w"></span>
</pre></div></td></tr></table></div>
</div>
</p></li></ol>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0393.html">Resource Monitoring</a></div>
</div>
</div>
View Git Blame Copy Permalink