PostgreSQL 9.5.2 Documentation
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# SPI_getbinval

## Name

SPI_getbinval -- return the binary value of the specified column

## Synopsis

    Datum SPI_getbinval(HeapTuple row, TupleDesc rowdesc, int colnumber,
                        bool * isnull)

## Description

`SPI_getbinval` returns the value of the specified column in the internal form (as type `Datum`).

This function does not allocate new space for the datum. In the case of a pass-by-reference data type, the return value will be a pointer into the passed row.

## Arguments

`HeapTuple `row``

  input row to be examined

`TupleDesc `rowdesc``

  input row description

`int `colnumber``

  column number (count starts at 1)

`bool * `isnull``

  flag for a null value in the column

## Return Value

The binary value of the column is returned. The variable pointed to by `isnull` is set to true if the column is null, else to false.

`SPI_result` is set to `SPI_ERROR_NOATTRIBUTE` on error.

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