Provided by: postgresql-doc-11_11.5-1_all bug

NAME

       SPI_getvalue - return the string value of the specified column

SYNOPSIS

       char * SPI_getvalue(HeapTuple row, TupleDesc rowdesc, int colnumber)

DESCRIPTION

       SPI_getvalue returns the string representation of the value of the specified column.

       The result is returned in memory allocated using palloc. (You can use pfree to release the
       memory when you don't need it anymore.)

ARGUMENTS

       HeapTuple row
           input row to be examined

       TupleDesc rowdesc
           input row description

       int colnumber
           column number (count starts at 1)

RETURN VALUE

       Column value, or NULL if the column is null, colnumber is out of range (SPI_result is set
       to SPI_ERROR_NOATTRIBUTE), or no output function is available (SPI_result is set to
       SPI_ERROR_NOOUTFUNC).