SPI_fname - determine the column name for the specified column number

TupleDesc rowdesc input row description int colnumber column number (count starts at 1)

SPI_fname returns a copy of the column name of the specified column. (You can use pfree to release the copy of the name when you don't need it anymore.)

SPI_fname - determine the column name for the specified column number

The column name; NULL if colnumber is out of range. SPI_result set to SPI_ERROR_NOATTRIBUTE on error. PostgreSQL 17.5 2025 SPI_FNAME(3)

char * SPI_fname(TupleDesc rowdesc, int colnumber)