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.
Deliver First Class Web Sites: 101 Essential Checklists Want to learn how to make your web sites usable and accessible? Want to ensure that your sites meet current best practice, without spending hours trawling through incomprehensible specifications and recommendations from dozens of different books, research papers, and web sites? Want to make sure that the sites you build are "right the first time," requiring no costly redevelopments?
Free Sample Chapters