int SPI_execute_plan(SPIPlanPtr plan, Datum * values, const char * nulls, bool read_only, long count)
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
- SPIPlanPtr plan
prepared statement (returned by
- 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.
If nulls is NULL then
SPI_execute_planassumes 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' terminator.
- bool read_only
true for read-only execution
- long count
maximum number of rows to return, or 0 for no limit
The return value is the same as for
SPI_execute, with the following additional possible error (negative) results:
if plan is NULL or invalid, or count is less than 0
if values is NULL and plan was prepared with some parameters
SPI_processed and SPI_tuptable are set as in
SPI_execute if successful.