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SPI_EXECUTE_WITH_ARGS(3) PostgreSQL 9.2.7 Documentation SPI_EXECUTE_WITH_ARGS(3)
SPI_execute_with_args - execute a command with out-of-line parameters
int SPI_execute_with_args(const char *command,
int nargs, Oid *argtypes,
Datum *values, const char *nulls,
bool read_only, long count)
SPI_execute_with_args executes a command that might include references to externally
supplied parameters. The command text refers to a parameter as $n, and the call specifies
data types and values for each such symbol. read_only and count have the same
interpretation as in SPI_execute.
The main advantage of this routine compared to SPI_execute is that data values can be
inserted into the command without tedious quoting/escaping, and thus with much less risk
of SQL-injection attacks.
Similar results can be achieved with SPI_prepare followed by SPI_execute_plan; however,
when using this function the query plan is always customized to the specific parameter
values provided. For one-time query execution, this function should be preferred. 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.
const char * command
number of input parameters ($1, $2, etc.)
Oid * argtypes
an array containing the OIDs of the data types of the parameters
Datum * values
an array of actual parameter values
const char * nulls
an array describing which parameters are null
If nulls is NULL then SPI_execute_with_args assumes that no parameters are null.
true for read-only execution
maximum number of rows to return, or 0 for no limit
The return value is the same as for SPI_execute.
SPI_processed and SPI_tuptable are set as in SPI_execute if successful.
PostgreSQL 9.2.7 2014-02-17 SPI_EXECUTE_WITH_ARGS(3)
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