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NAME="SPI-SPI-SAVEPLAN"
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>SPI_saveplan</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN61553"
></A
><H2
>Name</H2
>SPI_saveplan -- save a prepared statement</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN61558"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>SPIPlanPtr SPI_saveplan(SPIPlanPtr <TT
CLASS="PARAMETER"
>plan</TT
>)</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN61561"
></A
><H2
>Description</H2
><P
> <CODE
CLASS="FUNCTION"
>SPI_saveplan</CODE
> copies a passed statement (prepared by
<CODE
CLASS="FUNCTION"
>SPI_prepare</CODE
>) into memory that will not be freed
by <CODE
CLASS="FUNCTION"
>SPI_finish</CODE
> nor by the transaction manager,
and returns a pointer to the copied statement. This gives you the
ability to reuse prepared statements in the subsequent invocations of
your procedure in the current session.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN61567"
></A
><H2
>Arguments</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>SPIPlanPtr <TT
CLASS="PARAMETER"
>plan</TT
></TT
></DT
><DD
><P
> the prepared statement to be saved
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN61576"
></A
><H2
>Return Value</H2
><P
> Pointer to the copied statement; or <TT
CLASS="SYMBOL"
>NULL</TT
> if unsuccessful.
On error, <TT
CLASS="VARNAME"
>SPI_result</TT
> is set thus:
<P
></P
></P><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="SYMBOL"
>SPI_ERROR_ARGUMENT</TT
></DT
><DD
><P
> if <TT
CLASS="PARAMETER"
>plan</TT
> is <TT
CLASS="SYMBOL"
>NULL</TT
> or invalid
</P
></DD
><DT
><TT
CLASS="SYMBOL"
>SPI_ERROR_UNCONNECTED</TT
></DT
><DD
><P
> if called from an unconnected procedure
</P
></DD
></DL
></DIV
><P>
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN61594"
></A
><H2
>Notes</H2
><P
> The originally passed-in statement is not freed, so you might wish to do
<CODE
CLASS="FUNCTION"
>SPI_freeplan</CODE
> on it to avoid leaking memory
until <CODE
CLASS="FUNCTION"
>SPI_finish</CODE
>.
</P
><P
> In most cases, <CODE
CLASS="FUNCTION"
>SPI_keepplan</CODE
> is preferred to this
function, since it accomplishes largely the same result without needing
to physically copy the prepared statement's data structures.
</P
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