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>SPI_prepare_cursor</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN60539"
></A
><H2
>Name</H2
>SPI_prepare_cursor -- prepare a statement, without executing it yet</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN60544"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>SPIPlanPtr SPI_prepare_cursor(const char * <TT
CLASS="PARAMETER"
>command</TT
>, int <TT
CLASS="PARAMETER"
>nargs</TT
>,
Oid * <TT
CLASS="PARAMETER"
>argtypes</TT
>, int <TT
CLASS="PARAMETER"
>cursorOptions</TT
>)</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN60550"
></A
><H2
>Description</H2
><P
> <CODE
CLASS="FUNCTION"
>SPI_prepare_cursor</CODE
> is identical to
<CODE
CLASS="FUNCTION"
>SPI_prepare</CODE
>, except that it also allows specification
of the planner's <SPAN
CLASS="QUOTE"
>"cursor options"</SPAN
> parameter. This is a bit mask
having the values shown in <TT
CLASS="FILENAME"
>nodes/parsenodes.h</TT
>
for the <TT
CLASS="STRUCTFIELD"
>options</TT
> field of <TT
CLASS="STRUCTNAME"
>DeclareCursorStmt</TT
>.
<CODE
CLASS="FUNCTION"
>SPI_prepare</CODE
> always takes the cursor options as zero.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN60560"
></A
><H2
>Arguments</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>const char * <TT
CLASS="PARAMETER"
>command</TT
></TT
></DT
><DD
><P
> command string
</P
></DD
><DT
><TT
CLASS="LITERAL"
>int <TT
CLASS="PARAMETER"
>nargs</TT
></TT
></DT
><DD
><P
> number of input parameters (<TT
CLASS="LITERAL"
>$1</TT
>, <TT
CLASS="LITERAL"
>$2</TT
>, etc.)
</P
></DD
><DT
><TT
CLASS="LITERAL"
>Oid * <TT
CLASS="PARAMETER"
>argtypes</TT
></TT
></DT
><DD
><P
> pointer to an array containing the <ACRONYM
CLASS="ACRONYM"
>OID</ACRONYM
>s of
the data types of the parameters
</P
></DD
><DT
><TT
CLASS="LITERAL"
>int <TT
CLASS="PARAMETER"
>cursorOptions</TT
></TT
></DT
><DD
><P
> integer bit mask of cursor options; zero produces default behavior
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN60590"
></A
><H2
>Return Value</H2
><P
> <CODE
CLASS="FUNCTION"
>SPI_prepare_cursor</CODE
> has the same return conventions as
<CODE
CLASS="FUNCTION"
>SPI_prepare</CODE
>.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN60595"
></A
><H2
>Notes</H2
><P
> Useful bits to set in <TT
CLASS="PARAMETER"
>cursorOptions</TT
> include
<TT
CLASS="SYMBOL"
>CURSOR_OPT_SCROLL</TT
>,
<TT
CLASS="SYMBOL"
>CURSOR_OPT_NO_SCROLL</TT
>,
<TT
CLASS="SYMBOL"
>CURSOR_OPT_FAST_PLAN</TT
>,
<TT
CLASS="SYMBOL"
>CURSOR_OPT_GENERIC_PLAN</TT
>, and
<TT
CLASS="SYMBOL"
>CURSOR_OPT_CUSTOM_PLAN</TT
>. Note in particular that
<TT
CLASS="SYMBOL"
>CURSOR_OPT_HOLD</TT
> is ignored.
</P
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