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From: "Frank Millman" <frank@chagford.com>
Newsgroups: comp.lang.python
Subject: Re: Problem with sqlite3 and Decimal (fwd)
Date: Sat, 12 Dec 2015 07:22:42 +0200
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"Igor Korot"  wrote in message 
news:CA+FnnTyZY_1=62Rbk_kKZ39tkeoA6JVmFn9qs17aS-2YD4dVnA@mail.gmail.com...
>
> Yes, I saw your post to sqlite3 ML.
> And I do know that by default sqlite3 does not have many types supported.
>
> However, all you need to do is save it as DECIMAL(10,2).
> It is supported is sqlite3 and it will have NUMERIC affinity (ref 1)
> or REAL (ref 2), which means the data will
> be stored as decimals and not a string.
>

Do you mean CREATE TABLE fmtemp (acno INT, balance DECIMAL(10,2));  ?

I tried that, but I got exactly the same result.

The answer, as explained by several people on the sqlite3 ML, is that 
sqlite3 does not have a true decimal type and therefore uses floating point 
internally. As we all know from many questions asked on this forum, floating 
point and exact decimal representation are incompatible.

Frank