ECPGdebug(int on, FILE
*stream) turns on debug
logging if called with the first argument non-zero. Debug logging
is done on stream. Most
SQL statement log their arguments and results.
The most important function, ECPGdo, logs
all SQL statements with both the expanded
string, i.e. the string with all the input variables inserted,
and the result from the PostgreSQL
server. This can be very useful when searching for errors in your
SQL statements.