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Second phase of committing Rod Taylor's pg_depend/pg_constraint patch.

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pg_relcheck is gone; CHECK, UNIQUE, PRIMARY KEY, and FOREIGN KEY
constraints all have real live entries in pg_constraint.  pg_depend
exists, and RESTRICT/CASCADE options work on most kinds of DROP;
however, pg_depend is not yet very well populated with dependencies.
(Most of the ones that are present at this point just replace formerly
hardwired associations, such as the implicit drop of a relation's pg_type
entry when the relation is dropped.)  Need to add more logic to create
dependency entries, improve pg_dump to dump constraints in place of
indexes and triggers, and add some regression tests.
This commit is contained in:
Tom Lane
2002-07-12 18:43:19 +00:00
parent 791a40f943
commit 7c6df91dda
77 changed files with 4074 additions and 1987 deletions
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31
doc/src/sgml/ref/drop_language.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_language.sgml,v 1.14 2002/05/18 15:44:47 petere Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_language.sgml,v 1.15 2002/07/12 18:43:13 tgl Exp $
PostgreSQL documentation
-->
@ -21,7 +21,7 @@ PostgreSQL documentation
<date>1999-07-20</date>
</refsynopsisdivinfo>
<synopsis>
DROP [ PROCEDURAL ] LANGUAGE <replaceable class="PARAMETER">name</replaceable>
DROP [ PROCEDURAL ] LANGUAGE <replaceable class="PARAMETER">name</replaceable> [ CASCADE | RESTRICT ]
</synopsis>
<refsect2 id="R2-SQL-DROPLANGUAGE-1">
@ -43,7 +43,26 @@ DROP [ PROCEDURAL ] LANGUAGE <replaceable class="PARAMETER">name</replaceable>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>CASCADE</term>
<listitem>
<para>
Automatically drop objects that depend on the language
(such as functions in the language).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>RESTRICT</term>
<listitem>
<para>
Refuse to drop the language if there are any dependent objects.
This is the default.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
@ -112,14 +131,6 @@ ERROR: Language "<replaceable class="parameter">name</replaceable>" doesn't exis
<xref linkend="sql-createlanguage" endterm="sql-createlanguage-title">
for information on how to create procedural languages.
</para>
<para>
No checks are made if functions or trigger procedures registered
in this language still exist. To re-enable them without having
to drop and recreate all the functions, the pg_proc's prolang
attribute of the functions must be adjusted to the new object
ID of the recreated pg_language entry for the PL.
</para>
</refsect2>
</refsect1>