Provided by: postgresql-doc-10_10.23-0ubuntu0.18.04.2_all 

NAME
SPI_getrelname - return the name of the specified relation
SYNOPSIS
char * SPI_getrelname(Relation rel)
DESCRIPTION
SPI_getrelname returns a copy of the name of the specified relation. (You can use pfree to release the
copy of the name when you don't need it anymore.)
ARGUMENTS
Relation rel
input relation
RETURN VALUE
The name of the specified relation.
PostgreSQL 10.23 2022 SPI_GETRELNAME(3)