Sander Jansen wrote: > I need to store NaNs in my database and able to retrieve them as well. > > Since sqlite will give me back 0.0 when I call sqlite3_column_double > and a result contains a NAN, > I was wondering what the best way is to retrieve a NAN from the database. > > Here's what I currently do in peudo code: > > if (sqlite3_column_type(column)==SQLITE_FLOAT) > value = sqlite3_column_double(column); > else > value = NAN; > > Now, the doc says that > > "The value returned by sqlite3_column_type() is only meaningful if no > type conversions have occurred as described below." > > Am I correctly assuming the "no type conversions have occurred" means > "no type conversions on that (row,column) of the result set"? I mean > next time I call sqlite3_column_type() on the same column but on the > next row of the result set, it will still give the correct answer? > > Thanks, > > Sander > That sounds correct, yes.
One suggestion--if the column will always have either a float or NAN, why not just not insert anything if you have NAN, and then test for NULL? HTH, Gerry _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
