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Add to_regprocedure() and to_regoperator().

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These are natural complements to the functions added by commit
0886fc6a5c, but they weren't included
in the original patch for some reason.  Add them.

Patch by me, per a complaint by Tom Lane.  Review by Tatsuo
Ishii.
This commit is contained in:
Robert Haas
2014-04-16 12:21:43 -04:00
parent 1a81daab8b
commit dfc0219f64
7 changed files with 199 additions and 5 deletions
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28
doc/src/sgml/func.sgml
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@@ -15293,10 +15293,18 @@ SELECT pg_type_is_visible('myschema.widget'::regtype);
<primary>to_regproc</primary>
</indexterm>
<indexterm>
<primary>to_regprocedure</primary>
</indexterm>
<indexterm>
<primary>to_regoper</primary>
</indexterm>
<indexterm>
<primary>to_regoperator</primary>
</indexterm>
<indexterm>
<primary>to_regtype</primary>
</indexterm>
@@ -15481,11 +15489,21 @@ SELECT pg_type_is_visible('myschema.widget'::regtype);
<entry><type>regproc</type></entry>
<entry>get the oid of the named function</entry>
</row>
<row>
<entry><literal><function>to_regprocedure(<parameter>func_name</parameter>)</function></literal></entry>
<entry><type>regprocedure</type></entry>
<entry>get the oid of the named function</entry>
</row>
<row>
<entry><literal><function>to_regoper(<parameter>operator_name</parameter>)</function></literal></entry>
<entry><type>regoper</type></entry>
<entry>get the oid of the named operator</entry>
</row>
<row>
<entry><literal><function>to_regoperator(<parameter>operator_name</parameter>)</function></literal></entry>
<entry><type>regoperator</type></entry>
<entry>get the oid of the named operator</entry>
</row>
<row>
<entry><literal><function>to_regtype(<parameter>type_name</parameter>)</function></literal></entry>
<entry><type>regtype</type></entry>
@@ -15658,10 +15676,12 @@ SELECT collation for ('foo' COLLATE "de_DE");
<para>
The <function>to_regclass</function>, <function>to_regproc</function>,
<function>to_regoper</function> and <function>to_regtype</function>
translate relation, function, operator, and type names to objects of
type <type>regclass</>, <type>regproc</>, <type>regoper</> and
<type>regtype</>, respectively. These functions differ from a cast from
<function>to_regprocedure</function>, <function>to_regoper</function>,
<function>to_regoperator</function>, and <function>to_regtype</function>
functions translate relation, function, operator, and type names to objects
of type <type>regclass</>, <type>regproc</>, <type>regprocedure</type>,
<type>regoper</>, <type>regoperator</type>, and <type>regtype</>,
respectively. These functions differ from a cast from
text in that they don't accept a numeric OID, and that they return null
rather than throwing an error if the name is not found (or, for
<function>to_regproc</function> and <function>to_regoper</function>, if