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Improve documentation for SQLSTATE error codes, per recent thread on

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-patches.
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Neil Conway
2004-05-14 18:04:02 +00:00
parent 9f944f0443
commit 0cb27df5c6
3 changed files with 53 additions and 24 deletions
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21
doc/src/sgml/errcodes.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/errcodes.sgml,v 1.3 2004/03/04 21:47:18 neilc Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/errcodes.sgml,v 1.4 2004/05/14 18:04:02 neilc Exp $ -->
<appendix id="errcodes-appendix">
<title><productname>PostgreSQL</productname> Error Codes</title>
@@ -9,13 +9,18 @@
</indexterm>
<para>
All messages emitted by the <productname>PostgreSQL</productname> server
are assigned five-character error codes that follow the SQL standard's
conventions for <quote>SQLSTATE</> codes. Applications that need to know
which error condition has occurred should usually test the error code,
rather than looking at the textual error message. The error codes are
less likely to change across <productname>PostgreSQL</productname> releases,
and also are not subject to change due to localization of error messages.
All messages emitted by the <productname>PostgreSQL</productname>
server are assigned five-character error codes that follow the SQL
standard's conventions for <quote>SQLSTATE</> codes. Applications
that need to know which error condition has occurred should usually
test the error code, rather than looking at the textual error
message. The error codes are less likely to change across
<productname>PostgreSQL</> releases, and also are not subject to
change due to localization of error messages. Note that some, but
not all, of the error codes produced by <productname>PostgreSQL</>
are defined by the SQL standard; some additional error codes for
conditions not defined by the standard have been invented or
borrowed from other databases.
</para>
<para>