SPI_cursor_find — find an existing cursor by name
Portal SPI_cursor_find(const char * name)
SPI_cursor_find finds an existing portal by
name. This is primarily useful to resolve a cursor name returned
as text by some other function.
const char * namename of the portal
pointer to the portal with the specified name, or
NULL if none was found
Beware that this function can return a Portal object
that does not have cursor-like properties; for example it might not
return tuples. If you simply pass the Portal pointer
to other SPI functions, they can defend themselves against such
cases, but caution is appropriate when directly inspecting
the Portal.