[tarantool-patches] Re: [PATCH 0/6] Introduce UNSIGNED type in SQL

[Kirill Yukhin <kyukhin@tarantool.org>]

Hello,

On 07 Jun 18:37, Nikita Pettik wrote:
> Branch: https://github.com/tarantool/tarantool/tree/np/introduce-uint
> Issues:
> https://github.com/tarantool/tarantool/issues/3810
> https://github.com/tarantool/tarantool/issues/4015
> 
> Current patch-set allows using UNSIGNED as a column type and operating
> on integer values in range up to [2^64 - 1]. This means that result of
> all basic routines such as arithmetic operations and built-in functions
> is extended to unsigned range.
> The basic idea under the hood is separating storing positive and
> negative integers into different memory cells. We've added new
> type of VDBE memory - MEM_UInt. Now all positive values are stored with
> featuring this flag; in turn, negative integers have MEM_Int type.
> It's quite similar to MP_* format types.
> 
> For more details see content of patches.
> 
> Nikita Pettik (6):
>   sql: refactor sql_atoi64()
>   sql: separate VDBE memory holding positive and negative ints
>   sql: refactor arithmetic operations to support unsigned ints
>   sql: make built-in functions operate on unsigned values
>   sql: introduce extended range for INTEGER type
>   sql: allow to specify UNSIGNED column type

I've checked the patchset into master.

--
Regards, Kirill Yukhin