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1 | 1 | <!--
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2 | 2 | Documentation of the system catalogs, directed toward PostgreSQL developers
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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 | -->
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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
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1738 | 1738 | extremely general statistics (such as NULL-ness) are given dedicated
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1739 | 1739 | columns in <structname>pg_statistic</structname>. Everything else
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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.
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1742 | 1742 | For more information see
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1743 | 1743 | <filename>src/include/catalog/pg_statistic.h</filename>.
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1803 | 1803 | <entry><type>int2</type></entry>
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1804 | 1804 | <entry></entry>
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1805 | 1805 | <entry>A code number indicating the kind of statistics stored in the Nth
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1806 |
| - "slot" of the <structname>pg_statistic</structname> row. |
| 1806 | + <quote>slot</quote> of the <structname>pg_statistic</structname> row. |
1807 | 1807 | </entry>
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1808 | 1808 | </row>
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1809 | 1809 |
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1812 | 1812 | <entry><type>oid</type></entry>
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1813 | 1813 | <entry>pg_operator.oid</entry>
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1814 | 1814 | <entry>An operator used to derive the statistics stored in the
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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.
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1817 | 1817 | </entry>
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1818 | 1818 | </row>
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1822 | 1822 | <entry><type>float4[]</type></entry>
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1823 | 1823 | <entry></entry>
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1824 | 1824 | <entry>Numerical statistics of the appropriate kind for the Nth
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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>
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1827 | 1827 | </row>
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1828 | 1828 |
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1831 | 1831 | <entry><type>text[]</type></entry>
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1832 | 1832 | <entry></entry>
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1833 | 1833 | <entry>Column data values of the appropriate kind for the Nth
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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
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1836 | 1836 | to external textual form and stored as TEXT datums.
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1837 | 1837 | </entry>
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