On 9 May 2012 14:17, Pavel Ivanov <paiva...@gmail.com> wrote: >> As the last three statements are exactly the same (in meaning). >> Can someone explain what's happening? > > I think you've got trapped by double value storage imprecision. > Comparing double values for exact equality is pretty dangerous - two > numbers can differ in one last bit, be not equal and be displayed > identically when printed in decimal form. > > > Pavel >
I rather think that it is an affinity issue: http://www.sqlite.org/datatype3.html#affinity and http://www.sqlite.org/datatype3.html#comparisons Consider: sqlite> select 123.456='123.456'; 0 sqlite> select cast( 123.456 as real ) = '123.456'; 1 sqlite> select 123.456 = 0+'123.456'; 1 Regards, Simon _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
