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Support INOUT arguments in procedures

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In a top-level CALL, the values of INOUT arguments will be returned as a
result row.  In PL/pgSQL, the values are assigned back to the input
arguments.  In other languages, the same convention as for return a
record from a function is used.  That does not require any code changes
in the PL implementations.

Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
This commit is contained in:
Peter Eisentraut
2018-03-14 11:47:21 -04:00
parent 484a4a08ab
commit 33803f67f1
32 changed files with 792 additions and 50 deletions
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7
doc/src/sgml/ref/create_procedure.sgml
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@@ -96,8 +96,11 @@ CREATE [ OR REPLACE ] PROCEDURE
<listitem>
<para>
The mode of an argument: <literal>IN</literal> or <literal>VARIADIC</literal>.
If omitted, the default is <literal>IN</literal>.
The mode of an argument: <literal>IN</literal>,
<literal>INOUT</literal>, or <literal>VARIADIC</literal>. If omitted,
the default is <literal>IN</literal>. (<literal>OUT</literal>
arguments are currently not supported for procedures. Use
<literal>INOUT</literal> instead.)
</para>
</listitem>
</varlistentry>