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Hi Christophe,

Bug reports are always appreciated.  Thank you.  These all look like
valid problems (except #4 of course -- please post this to the list so
that everyone can use it; it may go into a future release).

Thom

Christophe NIGAUD wrote:
> 
> Hello,
> 
> Firstly thanks for your great work on instantDB. It's really kind to have an
> easy-to-install database like this.
> 
> i notice some problems using 3.26 idb...
> 
> 1) Between : between clause doesn't work very kindly with negative numbers.
> Tries
> 
> "select myvalue from mytable where myvalue between -1 and 2" generate an
> SQLException.
> 
> we must put single quote like this :
> "select myvalue from mytable where myvalue between '-1' and 2"
> 
> but its not really the right syntax for a integer value, isn't it ?
> 
> 2) null values : relating to general comportment of any database like sybase,
> oracle or my sql
> 
> doing such sql in an empty table
> "select max(id) from mytable"
> should return null value. and instantDB does it. ok.
> 
> but doing such sql with the same empty table
> "select max(id)+1 from mytable"
> should although return a null value to.
> but instantDB return -2147483647 !
> 
> 3) again null values :
> 
> we can't do this : "select null from mytable"  (generate SQLException)
> that would be fine if we could.
> 
> 4) i give you a sql function ifnull(int, int, int) i made. Work's like
> isNull(int, int) sybase function but with an added 3rd parameters.
> i think this is usefull in managing identity columns like the following sql :
> 
> select ifnull(max(id), 1, max(id)+1) from mytable
> 
> to use it like isnull(int, int) sybase function, put the 1rst param into the
> 3rd param, like
> select ifnull(max(id), 1, max(id)) from mytable
> 
> if you want, extends it with long values fonctionality.
> 
> 5) your management of 'sql' function doesn't really work with aggregate
> functions...
> 
> example on a table with n rows (n>=2):
> 
> "select mod(6,2) from mytable" return n rows with a value of 0. ok
> "select max(id) from mytable"   return one row with a value of 5 for example.
> ok
> but
> "select mod(max(id),2) from mytable" return n rows with a value of 1. which
> is wrong.
> it should return me one row with a value of 1.
> 
> Again, thanks for your work.
> yours faithfully.
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