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Allow the types of parameters to PREPARE to be inferred. If a parameter's

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data type is unspecified or is declared to be "unknown", the type will
be inferred from the context in which the parameter is used. This was
already possible for protocol-level prepared statements.
This commit is contained in:
Neil Conway
2006-01-15 22:18:47 +00:00
parent f7ea931287
commit 106a3695f5
6 changed files with 95 additions and 60 deletions
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13
doc/src/sgml/ref/execute.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/execute.sgml,v 1.12 2004/09/30 04:23:27 neilc Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/execute.sgml,v 1.13 2006/01/15 22:18:46 neilc Exp $
PostgreSQL documentation
-->
@@ -25,7 +25,7 @@ PostgreSQL documentation
<refsynopsisdiv>
<synopsis>
EXECUTE <replaceable class="PARAMETER">plan_name</replaceable> [ (<replaceable class="PARAMETER">parameter</replaceable> [, ...] ) ]
EXECUTE <replaceable class="PARAMETER">name</replaceable> [ (<replaceable class="PARAMETER">parameter</replaceable> [, ...] ) ]
</synopsis>
</refsynopsisdiv>
@@ -60,7 +60,7 @@ EXECUTE <replaceable class="PARAMETER">plan_name</replaceable> [ (<replaceable c
<variablelist>
<varlistentry>
<term><replaceable class="PARAMETER">plan_name</replaceable></term>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
<para>
The name of the prepared statement to execute.
@@ -73,10 +73,9 @@ EXECUTE <replaceable class="PARAMETER">plan_name</replaceable> [ (<replaceable c
<listitem>
<para>
The actual value of a parameter to the prepared statement. This
must be an expression yielding a value of a type compatible with
the data type specified for this parameter position in the
<command>PREPARE</command> command that created the prepared
statement.
must be an expression yielding a value that is compatible with
the data type of this parameter, as was determined when the
prepared statement was created.
</para>
</listitem>
</varlistentry>