Roland Bock e4bcc27463 is_null() throws for invalid rows ... result_row objects can be constructed with raw result rows representing the end of the result set. Field values must not be accessed for such rows. Thus, is_null() now throws an exception when called for a field of an invalid row.		2013-08-15 09:32:24 +02:00
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sqlpp11	is_null() throws for invalid rows	2013-08-15 09:32:24 +02:00