spi_fnumber(7)
NAME
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
RETURN VALUE
- Column number (count starts at 1), or SPI_ERROR_NOATTRIBUTE if the
named column was not found.