PostgreSQL Programmer's Guide
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# SPI_fnumber

## Name

SPI_fnumber — Finds the attribute number for specified attribute

    SPI_fnumber(tupdesc, fname)

### Inputs

TupleDesc `tupdesc`

  Input tuple description

char * `fname`

  Field name

### Outputs

int

  Attribute number

  Valid one-based index number of attribute
  SPI_ERROR_NOATTRIBUTE if the named attribute is not found

## Description

`SPI_fnumber` returns the attribute number for the attribute with name in fname.

## Usage

Attribute numbers are 1 based.

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