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Remove restriction that cast functions cannot be volatile. This

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restriction was debatable to begin with, but it has now become obvious
that it breaks forward-porting of user-defined types; contrib/lo being
the most salient example.
This commit is contained in:
Tom Lane
2003-02-01 22:09:26 +00:00
parent e0a1ee2053
commit 6ba8af9d5d
2 changed files with 10 additions and 3 deletions
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4
doc/src/sgml/ref/create_cast.sgml
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@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/create_cast.sgml,v 1.8 2003/01/19 00:13:29 momjian Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/create_cast.sgml,v 1.9 2003/02/01 22:09:25 tgl Exp $ -->
<refentry id="SQL-CREATECAST">
<refmeta>
@ -143,7 +143,7 @@ SELECT 'The time is ' || CAST(now() AS text);
be schema-qualified. If it is not, the function will be looked
up in the path. The argument type must be identical to the
source type, the result data type must match the target type of
the cast. Cast functions must be marked immutable or stable.
the cast.
</para>
</listitem>
</varlistentry>