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SPI_getbinval
Name
SPI_getbinval -- Returns the binary value
of the specified attribute
Synopsis
SPI_getbinval(tuple, tupdesc, fnumber, isnull)
Inputs
- HeapTuple tuple
-
Input tuple to be examined
- TupleDesc tupdesc
-
Input tuple description
- int fnumber
-
Attribute number
Outputs
- Datum
-
Attribute binary value
- bool * isnull
-
flag for null value in attribute
- SPI_result
-
Description
SPI_getbinval returns the
specified attribute's value in internal form (as a Datum).
Usage
Attribute numbers are 1 based.
Algorithm
Does not allocate new space for the datum. In the case of a
pass-by- reference data type, the Datum will be a pointer into
the given tuple.