diff options
Diffstat (limited to 'doc/src/sgml/html/catalog-pg-partitioned-table.html')
| -rw-r--r-- | doc/src/sgml/html/catalog-pg-partitioned-table.html | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/doc/src/sgml/html/catalog-pg-partitioned-table.html b/doc/src/sgml/html/catalog-pg-partitioned-table.html new file mode 100644 index 0000000..6c1b582 --- /dev/null +++ b/doc/src/sgml/html/catalog-pg-partitioned-table.html @@ -0,0 +1,71 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>53.37. pg_partitioned_table</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="catalog-pg-parameter-acl.html" title="53.36. pg_parameter_acl" /><link rel="next" href="catalog-pg-policy.html" title="53.38. pg_policy" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">53.37. <code class="structname">pg_partitioned_table</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-parameter-acl.html" title="53.36. pg_parameter_acl">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 53. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="catalog-pg-policy.html" title="53.38. pg_policy">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-PARTITIONED-TABLE"><div class="titlepage"><div><div><h2 class="title" style="clear: both">53.37. <code class="structname">pg_partitioned_table</code></h2></div></div></div><a id="id-1.10.4.39.2" class="indexterm"></a><p> + The catalog <code class="structname">pg_partitioned_table</code> stores + information about how tables are partitioned. + </p><div class="table" id="id-1.10.4.39.4"><p class="title"><strong>Table 53.37. <code class="structname">pg_partitioned_table</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_partitioned_table Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition"> + Column Type + </p> + <p> + Description + </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partrelid</code> <code class="type">oid</code> + (references <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">oid</code>) + </p> + <p> + The OID of the <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a> entry for this partitioned table + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partstrat</code> <code class="type">char</code> + </p> + <p> + Partitioning strategy; <code class="literal">h</code> = hash partitioned table, + <code class="literal">l</code> = list partitioned table, <code class="literal">r</code> = range partitioned table + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partnatts</code> <code class="type">int2</code> + </p> + <p> + The number of columns in the partition key + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partdefid</code> <code class="type">oid</code> + (references <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a>.<code class="structfield">oid</code>) + </p> + <p> + The OID of the <a class="link" href="catalog-pg-class.html" title="53.11. pg_class"><code class="structname">pg_class</code></a> entry for the default partition + of this partitioned table, or zero if this partitioned table does not + have a default partition + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partattrs</code> <code class="type">int2vector</code> + (references <a class="link" href="catalog-pg-attribute.html" title="53.7. pg_attribute"><code class="structname">pg_attribute</code></a>.<code class="structfield">attnum</code>) + </p> + <p> + This is an array of <code class="structfield">partnatts</code> values that + indicate which table columns are part of the partition key. For + example, a value of <code class="literal">1 3</code> would mean that the first + and the third table columns make up the partition key. A zero in this + array indicates that the corresponding partition key column is an + expression, rather than a simple column reference. + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partclass</code> <code class="type">oidvector</code> + (references <a class="link" href="catalog-pg-opclass.html" title="53.33. pg_opclass"><code class="structname">pg_opclass</code></a>.<code class="structfield">oid</code>) + </p> + <p> + For each column in the partition key, this contains the OID of the + operator class to use. See + <a class="link" href="catalog-pg-opclass.html" title="53.33. pg_opclass"><code class="structname">pg_opclass</code></a> for details. + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partcollation</code> <code class="type">oidvector</code> + (references <a class="link" href="catalog-pg-collation.html" title="53.12. pg_collation"><code class="structname">pg_collation</code></a>.<code class="structfield">oid</code>) + </p> + <p> + For each column in the partition key, this contains the OID of the + collation to use for partitioning, or zero if the column is not + of a collatable data type. + </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition"> + <code class="structfield">partexprs</code> <code class="type">pg_node_tree</code> + </p> + <p> + Expression trees (in <code class="function">nodeToString()</code> + representation) for partition key columns that are not simple column + references. This is a list with one element for each zero + entry in <code class="structfield">partattrs</code>. Null if all partition key columns + are simple references. + </p></td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="catalog-pg-parameter-acl.html" title="53.36. pg_parameter_acl">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-policy.html" title="53.38. pg_policy">Next</a></td></tr><tr><td width="40%" align="left" valign="top">53.36. <code class="structname">pg_parameter_acl</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 53.38. <code class="structname">pg_policy</code></td></tr></table></div></body></html>
\ No newline at end of file |