diff options
Diffstat (limited to 'doc/src/sgml/catalogs.sgml')
| -rw-r--r-- | doc/src/sgml/catalogs.sgml | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index 2c2190f13d3..9096ee5d517 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -279,11 +279,6 @@ </row> <row> - <entry><link linkend="catalog-pg-tablesample-method"><structname>pg_tablesample_method</structname></link></entry> - <entry>table sampling methods</entry> - </row> - - <row> <entry><link linkend="catalog-pg-tablespace"><structname>pg_tablespace</structname></link></entry> <entry>tablespaces within this database cluster</entry> </row> @@ -6132,121 +6127,6 @@ </sect1> - <sect1 id="catalog-pg-tablesample-method"> - <title><structname>pg_tabesample_method</structname></title> - - <indexterm zone="catalog-pg-tablesample-method"> - <primary>pg_am</primary> - </indexterm> - - <para> - The catalog <structname>pg_tablesample_method</structname> stores - information about table sampling methods which can be used in - <command>TABLESAMPLE</command> clause of a <command>SELECT</command> - statement. - </para> - - <table> - <title><structname>pg_tablesample_method</> Columns</title> - - <tgroup cols="4"> - <thead> - <row> - <entry>Name</entry> - <entry>Type</entry> - <entry>References</entry> - <entry>Description</entry> - </row> - </thead> - <tbody> - - <row> - <entry><structfield>oid</structfield></entry> - <entry><type>oid</type></entry> - <entry></entry> - <entry>Row identifier (hidden attribute; must be explicitly selected)</entry> - </row> - - <row> - <entry><structfield>tsmname</structfield></entry> - <entry><type>name</type></entry> - <entry></entry> - <entry>Name of the sampling method</entry> - </row> - - <row> - <entry><structfield>tsmseqscan</structfield></entry> - <entry><type>bool</type></entry> - <entry></entry> - <entry>If true, the sampling method scans the whole table sequentially. - </entry> - </row> - - <row> - <entry><structfield>tsmpagemode</structfield></entry> - <entry><type>bool</type></entry> - <entry></entry> - <entry>If true, the sampling method always reads the pages completely. - </entry> - </row> - - <row> - <entry><structfield>tsminit</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry><quote>Initialize the sampling scan</quote> function</entry> - </row> - - <row> - <entry><structfield>tsmnextblock</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry><quote>Get next block number</quote> function</entry> - </row> - - <row> - <entry><structfield>tsmnexttuple</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry><quote>Get next tuple offset</quote> function</entry> - </row> - - <row> - <entry><structfield>tsmexaminetuple</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry>Function which examines the tuple contents and decides if to - return it, or zero if none</entry> - </row> - - <row> - <entry><structfield>tsmend</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry><quote>End the sampling scan</quote> function</entry> - </row> - - <row> - <entry><structfield>tsmreset</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry><quote>Restart the state of sampling scan</quote> function</entry> - </row> - - <row> - <entry><structfield>tsmcost</structfield></entry> - <entry><type>regproc</type></entry> - <entry><literal><link linkend="catalog-pg-proc"><structname>pg_proc</structname></link>.oid</literal></entry> - <entry>Costing function</entry> - </row> - - </tbody> - </tgroup> - </table> - - </sect1> - - <sect1 id="catalog-pg-tablespace"> <title><structname>pg_tablespace</structname></title> |
