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Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: luhuayi <luhuayi@huawei.com> Co-committed-by: luhuayi <luhuayi@huawei.com>
94 lines
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94 lines
7.0 KiB
HTML
<a name="EN-US_TOPIC_0000001811490901"></a><a name="EN-US_TOPIC_0000001811490901"></a>
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<h1 class="topictitle1">GS_COLUMN_TABLE_IO_STAT</h1>
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<div id="body0000001194280777"><p id="EN-US_TOPIC_0000001811490901__p1432448113816"><strong id="EN-US_TOPIC_0000001811490901__b17239103911411">GS_COLUMN_TABLE_IO_STAT</strong> displays the I/O of all column-store tables of the database on the current node. The value of each statistical column is the accumulated value since the instance was started.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001811490901__table39829710387" frame="border" border="1" rules="all"><caption><b>Table 1 </b>GS_COLUMN_TABLE_IO_STAT columns</caption><thead align="left"><tr id="EN-US_TOPIC_0000001811490901__row2032413817388"><th align="left" class="cellrowborder" valign="top" width="23.23%" id="mcps1.3.2.2.4.1.1"><p id="EN-US_TOPIC_0000001811490901__p113251813385"><strong id="EN-US_TOPIC_0000001811490901__b211750593043557">Column</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="19.189999999999998%" id="mcps1.3.2.2.4.1.2"><p id="EN-US_TOPIC_0000001811490901__p133255863812">Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="57.58%" id="mcps1.3.2.2.4.1.3"><p id="EN-US_TOPIC_0000001811490901__p1132517833814">Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0000001811490901__row032528123811"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p73262893816">schemaname</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p183262817388">Name</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p632615813812">Namespace of a table</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row1632614893819"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p1732678183813">relname</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p1832612813810">Name</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p132798193815">Table name</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row173272817385"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p103271813380">heap_read</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p032778193816">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p632719843810">Number of blocks logically read in the heap</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row1327178143817"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p3327586383">heap_hit</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p193286833815">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p132816853816">Number of block hits in the heap</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row83289883811"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p1432819853818">idx_read</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p1932811814386">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p9328984383">Number of blocks logically read in the index</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row332911812385"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p332968203813">idx_hit</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p10329188133819">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p132918153820">Number of block hits in the index</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row2032915863812"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p83299811381">cu_read</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p18330108103820">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p1833008183815">Number of logical reads in the Compression Unit</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row1433014817382"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p123301286385">cu_hit</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p1033078153810">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p11330487389">Number of hits in the Compression Unit</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row193308816388"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p163308810389">cidx_read</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p163311485381">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p15331118143811">Number of indexes logically read in the Compression Unit</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001811490901__row6331148173816"><td class="cellrowborder" valign="top" width="23.23%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001811490901__p173312803815">cidx_hit</p>
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</td>
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<td class="cellrowborder" valign="top" width="19.189999999999998%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001811490901__p833158153813">Bigint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.58%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001811490901__p193319853818">Number of index hits in the Compression Unit</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_04_0639.html">System Views</a></div>
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</div>
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</div>
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