SPI_fnumber (3) Linux Manual Page
SPI_fnumber – determine the column number for the specified column name
Synopsis
int SPI_fnumber(TupleDesc rowdesc, const char * colname)
Description
SPI_fnumber returns the column number for the column with the specified name. If colname refers to a system column (e.g., oid) then the appropriate negative column number will be returned. The caller should be careful to test the return value for exact equality to SPI_ERROR_NOATTRIBUTE to detect an error; testing the result for less than or equal to 0 is not correct unless system columns should be rejected.
Arguments
TupleDesc rowdesc- input row description
const char * colname
- column name