Portal SPI_cursor_open_with_args(const char *name, const char *command, int nargs, Oid *argtypes, Datum *values, const char *nulls, bool read_only, int cursorOptions)
up a cursor (internally, a portal) that will execute the
specified query. Most of the parameters have the same meanings as
the corresponding parameters to
For one-time query execution, this function should be
SPI_cursor_open. If the
same command is to be executed with many different parameters,
either method might be faster, depending on the cost of
re-planning versus the benefit of custom plans.
The passed-in parameter data will be copied into the cursor's portal, so it can be freed while the cursor still exists.
name for portal, or NULL to let the system select a name
number of input parameters ($1, $2, etc.)
an array of length nargs, containing the OIDs of the data types of the parameters
an array of length nargs, containing the actual parameter values
an array of length nargs, describing which parameters are null
If nulls is NULL then
SPI_cursor_open_with_args assumes that no
parameters are null. Otherwise, each entry of the
nulls array should be ' ' if the corresponding parameter
value is non-null, or 'n' if the
corresponding parameter value is null. (In the latter case,
the actual value in the corresponding values entry doesn't matter.) Note that
nulls is not a text string, just
an array: it does not need a '\0'
true for read-only execution
integer bit mask of cursor options; zero produces default behavior
Pointer to portal containing the cursor. Note there is no
error return convention; any error will be reported via
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