Frequently Asked Questions (FAQ) for PostgreSQL
- Last updated: Tue Oct 9 16:07:30 EDT 2007
+ Last updated: Tue Oct 9 16:13:00 EDT 2007
Current maintainer: Bruce Momjian (bruce@momjian.us)
* The default C locale must be used during initdb because it is not
possible to know the next-greatest character in a non-C locale.
You can create a special text_pattern_ops index for such cases
- that work only for LIKE indexing.
+ that work only for LIKE indexing. It is also possible to use full
+ text indexing for word searches.
- In pre-8.0 releases, indexes often can not be used unless the data
- types exactly match the index's column types. This was particularly
- true of int2, int8, and numeric column indexes.
-
4.7) How do I see how the query optimizer is evaluating my query?
See the EXPLAIN manual page.
alink="#0000ff">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
- <P>Last updated: Tue Oct 9 16:07:30 EDT 2007</P>
+ <P>Last updated: Tue Oct 9 16:13:00 EDT 2007</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:bruce@momjian.us">bruce@momjian.us</A>)
<i>initdb</i> because it is not possible to know the next-greatest
character in a non-C locale. You can create a special
<CODE>text_pattern_ops</CODE> index for such cases that work only
- for <SMALL>LIKE</SMALL> indexing.
+ for <SMALL>LIKE</SMALL> indexing. It is also possible to use
+ full text indexing for word searches.
</LI>
</UL>
- <P>In pre-8.0 releases, indexes often can not be used unless the data
- types exactly match the index's column types. This was particularly
- true of int2, int8, and numeric column indexes.</P>
-
<H3 id="item4.7">4.7) How do I see how the query optimizer is
evaluating my query?</H3>