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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.