forked from docs/doc-exports
Lu, Huayi
e6fa411af0
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
95 lines
8.2 KiB
HTML
95 lines
8.2 KiB
HTML
<a name="EN-US_TOPIC_0000001188323720"></a><a name="EN-US_TOPIC_0000001188323720"></a>
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<h1 class="topictitle1">PGXC_CLASS</h1>
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<div id="body8662426"><p id="EN-US_TOPIC_0000001188323720__en-us_topic_0059779367_p174191834711"><strong id="EN-US_TOPIC_0000001188323720__b625545924616">PGXC_CLASS</strong> records the replicated or distributed information for each table.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001188323720__t8d456bb3ba884bb59cfe4f551bda7218" frame="border" border="1" rules="all"><caption><b>Table 1 </b>PGXC_CLASS columns</caption><thead align="left"><tr id="EN-US_TOPIC_0000001188323720__r8a6dddd9d34c46929ad03142fc808d98"><th align="left" class="cellrowborder" valign="top" width="24.87%" id="mcps1.3.2.2.4.1.1"><p id="EN-US_TOPIC_0000001188323720__a771be9a5ea9943aaad64db5f817d9276"><strong id="EN-US_TOPIC_0000001188323720__b84235270691445">Name</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="17.73%" id="mcps1.3.2.2.4.1.2"><p id="EN-US_TOPIC_0000001188323720__a224775d9bec347c6b6605062697583d7">Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="57.4%" id="mcps1.3.2.2.4.1.3"><p id="EN-US_TOPIC_0000001188323720__abee735504f8b4c29868daab910996ad2">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_0000001188323720__r6951e56bc00a4d409bc02b729b5ab986"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__ad9d29e7d60f0470aa8d7da799eb229b6">pcrelid</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__a536bf9c2c49e412e8a6d0f4242547d6f">oid</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a46f59c07b4f242eabcc86a87f3948dda">Table OID</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r05e59054ad73420fb62a03a3f94fe6d0"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a26a341038cec490a8f9f6f237b4a94a8">pclocatortype</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__a909ffaafa2434d02b1cc106addb28923">"char"</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a4a2a840de05249249cb751593790ca40">Locator type</p>
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<ul id="EN-US_TOPIC_0000001188323720__u8b7fe0fe42514a49a1166c3eadc20a46"><li id="EN-US_TOPIC_0000001188323720__l79f68ab00c0b4ea7813ea726cc420291"><strong id="EN-US_TOPIC_0000001188323720__b8423527061554">H</strong>: hash</li><li id="EN-US_TOPIC_0000001188323720__l0b5932b71ba542adb20ac96635b9e61e"><strong id="EN-US_TOPIC_0000001188323720__b8423527061557">M</strong>: Modulo</li><li id="EN-US_TOPIC_0000001188323720__l0392c28a9fdf4a639c749adfd0958b6b"><strong id="EN-US_TOPIC_0000001188323720__b84235270615510">N</strong>: Round Robin</li><li id="EN-US_TOPIC_0000001188323720__ld25eb385e4534fbeb7fdc15d3d427273"><strong id="EN-US_TOPIC_0000001188323720__b84235270615515">R</strong>: Replicate</li></ul>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r8747babb58e1421aa4c76971ad9cc5b9"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a74b8113eed2b4405848fb342cd8fa112">pchashalgorithm</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__aa43ed01b67904a138fef4efc610d587e">smallint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__ad4a12e27a4674d1faa1a778c17adfd5f">Distributed tuple using the hash algorithm</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__rcd277885164a4d379af0c354a126509e"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a6f23d6a9bdaa439a8c1d0219c13bfcab">pchashbuckets</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__af6119f99ddcd48cf9eff8e0b357b01e6">smallint</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a21e509464b984536a124ceb3435ef2d3">Value of a harsh container</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r64c62d871fc84ab6bbdff774d1a1fe11"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a1e4c8a17be4e47098d8941e2d6828f0e">pgroup</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__ab746d95ce51d4f1fa19cd3b38008bb79">name</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__aae22db148c6a42d79365cf5c5ef0ecd4">Name of the node group</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__rd10edd4793254787999451c47c634426"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a521cd90d572f4c8aa6cb77e879ce6129">redistributed</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__ab91b9fc3fe0043d3afb32ef9e4bda4f0">"char"</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a199a3f65eeab4b919bb08a9911b416d5">The table has been redistributed.</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r5e0abb42174e4420bc2e1c0ee60b80c8"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__aabd602e9231b44d7b1dffb02f54e993a">redis_order</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__a41fb680ef51d4449a32e7b249e4bd74b">integer</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a5350387618e143f9adfb33d0f405060f">Redistribution sequence</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r92ee777d22354a45a393a5ec5bc62855"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a724899d57ebc4e179fcd2f5370775037">pcattnum</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__a1bd4d30b710e493cae0c5cc5426bad54">int2vector</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__aae27bdd6c6564580842af77a780a6fed">Column number used as a distribution key</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__r94c3cbf45a564021ac6ec8b06dc8dfb3"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__a4bb81d886e4c4c69b5f58ad354c618da">nodeoids</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__a4f733c5dd9f34311a65bbeefede368e9">oidvector_extend</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__a9601f9aaf2e34d3081f2bda825f0fa37">List of distributed table node OIDs</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0000001188323720__row6813154610397"><td class="cellrowborder" valign="top" width="24.87%" headers="mcps1.3.2.2.4.1.1 "><p id="EN-US_TOPIC_0000001188323720__p18815174663913">options</p>
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</td>
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<td class="cellrowborder" valign="top" width="17.73%" headers="mcps1.3.2.2.4.1.2 "><p id="EN-US_TOPIC_0000001188323720__p18815646123917">text</p>
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</td>
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<td class="cellrowborder" valign="top" width="57.4%" headers="mcps1.3.2.2.4.1.3 "><p id="EN-US_TOPIC_0000001188323720__p18815046193917">Extension status information. This is a reserved column in the system.</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_0561.html">System Catalogs</a></div>
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</div>
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</div>
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