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1 | 1 | <!-- |
2 | 2 | Documentation of the system catalogs, directed toward PostgreSQL developers |
3 | | - $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.24 2001/09/10 05:46:41 ishii Exp $ |
| 3 | + $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.25 2001/09/13 15:55:22 petere Exp $ |
4 | 4 | --> |
5 | 5 |
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6 | 6 | <chapter id="catalogs"> |
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1737 | 1737 | to assume very much about what sort of statistics it stores. Only |
1738 | 1738 | extremely general statistics (such as NULL-ness) are given dedicated |
1739 | 1739 | columns in <structname>pg_statistic</structname>. Everything else |
1740 | | - is stored in"slots", which are groups of associated columns whose |
| 1740 | + is stored in<quote>slots</quote>, which are groups of associated columns whose |
1741 | 1741 | content is identified by a code number in one of the slot's columns. |
1742 | 1742 | For more information see |
1743 | 1743 | <filename>src/include/catalog/pg_statistic.h</filename>. |
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1803 | 1803 | <entry><type>int2</type></entry> |
1804 | 1804 | <entry></entry> |
1805 | 1805 | <entry>A code number indicating the kind of statistics stored in the Nth |
1806 | | -"slot" of the <structname>pg_statistic</structname> row. |
| 1806 | +<quote>slot</quote> of the <structname>pg_statistic</structname> row. |
1807 | 1807 | </entry> |
1808 | 1808 | </row> |
1809 | 1809 |
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|
1812 | 1812 | <entry><type>oid</type></entry> |
1813 | 1813 | <entry>pg_operator.oid</entry> |
1814 | 1814 | <entry>An operator used to derive the statistics stored in the |
1815 | | - Nth"slot". For example, a histogram slot would show the"<" |
| 1815 | + Nth<quote>slot</quote>. For example, a histogram slot would show the<literal><</literal> |
1816 | 1816 | operator that defines the sort order of the data. |
1817 | 1817 | </entry> |
1818 | 1818 | </row> |
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1822 | 1822 | <entry><type>float4[]</type></entry> |
1823 | 1823 | <entry></entry> |
1824 | 1824 | <entry>Numerical statistics of the appropriate kind for the Nth |
1825 | | -"slot", or NULL if the slot kind does not involve numerical values. |
| 1825 | +<quote>slot</quote>, or NULL if the slot kind does not involve numerical values. |
1826 | 1826 | </entry> |
1827 | 1827 | </row> |
1828 | 1828 |
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|
1831 | 1831 | <entry><type>text[]</type></entry> |
1832 | 1832 | <entry></entry> |
1833 | 1833 | <entry>Column data values of the appropriate kind for the Nth |
1834 | | -"slot", or NULL if the slot kind does not store any data values. |
| 1834 | +<quote>slot</quote>, or NULL if the slot kind does not store any data values. |
1835 | 1835 | For datatype independence, all column data values are converted |
1836 | 1836 | to external textual form and stored as TEXT datums. |
1837 | 1837 | </entry> |
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