diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 3a83ab2216c..d04dd747af8 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -16847,7 +16847,7 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup()); <entry><type>bigint</type></entry> <entry> Disk space used by the specified fork (<literal>'main'</literal>, - <literal>'fsm'</literal> or <literal>'vm'</>) + <literal>'fsm'</literal>, <literal>'vm'</>, or <literal>'init'</>) of the specified table or index </entry> </row> @@ -16951,14 +16951,16 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup()); <para> <function>pg_relation_size</> accepts the OID or name of a table, index or - toast table, and returns the on-disk size in bytes. Specifying - <literal>'main'</literal> or leaving out the second argument returns the - size of the main data fork of the relation. Specifying - <literal>'fsm'</literal> returns the size of the - Free Space Map (see <xref linkend="storage-fsm">) associated with the - relation. Specifying <literal>'vm'</literal> returns the size of the - Visibility Map (see <xref linkend="storage-vm">) associated with the - relation. Note that this function shows the size of only one fork; + toast table, and returns the on-disk size in bytes. + Specifying <literal>'main'</literal> or leaving out the second argument + returns the size of the main data fork of the relation. + Specifying <literal>'fsm'</literal> returns the size of the Free Space + Map (see <xref linkend="storage-fsm">) associated with the relation. + Specifying <literal>'vm'</literal> returns the size of the Visibility + Map (see <xref linkend="storage-vm">) associated with the relation. + Specifying <literal>'init'</literal> returns the size of the + initialization fork, if any, associated with the relation. + Note that this function shows the size of only one fork; for most purposes it is more convenient to use the higher-level functions <function>pg_total_relation_size</> or <function>pg_table_size</>. |