10-17-2018
From small amount of view and replies I didn't think anyone was particularly interested. The views seem to have gone up a lot though so here it is.
I echoed to a variable but appended nulls and hex encoded to preserve them. Had to also trim the white space from the end but it worked. Could just have easily used printf and inserted nulls using flags but I got this working and it was good enough.
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LEARN ABOUT CENTOS
spi_execute_plan
SPI_EXECUTE_PLAN(3) PostgreSQL 9.2.7 Documentation SPI_EXECUTE_PLAN(3)
NAME
SPI_execute_plan - execute a statement prepared by SPI_prepare
SYNOPSIS
int SPI_execute_plan(SPIPlanPtr plan, Datum * values, const char * nulls,
bool read_only, long count)
DESCRIPTION
SPI_execute_plan executes a statement prepared by SPI_prepare or one of its siblings. read_only and count have the same interpretation as
in SPI_execute.
ARGUMENTS
SPIPlanPtr plan
prepared statement (returned by SPI_prepare)
Datum * values
An array of actual parameter values. Must have same length as the statement's number of arguments.
const char * nulls
An array describing which parameters are null. Must have same length as the statement's number of arguments. n indicates a null value
(entry in values will be ignored); a space indicates a nonnull value (entry in values is valid).
If nulls is NULL then SPI_execute_plan assumes that no parameters are null.
bool read_only
true for read-only execution
long count
maximum number of rows to return, or 0 for no limit
RETURN VALUE
The return value is the same as for SPI_execute, with the following additional possible error (negative) results:
SPI_ERROR_ARGUMENT
if plan is NULL or invalid, or count is less than 0
SPI_ERROR_PARAM
if values is NULL and plan was prepared with some parameters
SPI_processed and SPI_tuptable are set as in SPI_execute if successful.
PostgreSQL 9.2.7 2014-02-17 SPI_EXECUTE_PLAN(3)