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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.