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SPI_FNUMBER(3)          PostgreSQL 9.5.0 Documentation          SPI_FNUMBER(3)


SPI_fnumber - determine the column number for the specified column name


int SPI_fnumber(TupleDesc rowdesc, const char * colname)


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.


TupleDesc rowdesc input row description const char * colname column name


Column number (count starts at 1), or SPI_ERROR_NOATTRIBUTE if the named column was not found. PostgreSQL 9.5.0 2016 SPI_FNUMBER(3)

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