PostgreSQL 8.3.1 Documentation
Prev | Fast Backward |  | Fast Forward | Next

# SPI_fnumber

## 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.

Prev | Home | Next
SPI_fname | Up | SPI_getvalue