SQLite Forum

Sum precision ?
The `decimal_sum()` SQL function is available (as an extension) in the
[prerelease snapshot][1].  That function does unlimited-precision decimal
arithmetic.  It returns an exact answer.

The decimal_sum() function uses more CPU cycles than sum(), obviously.

The decimal_sum() function is built into the CLI in the prerelease snapshot
But in order to use it in your applications, you will have to load it as
an extension.

[1]: https://sqlite.org/download.html