在我们的数据库中,我们对数字 0 到 9 和字母表中所有非誓言的字母组合的所有内容都使用主键。包括字母 Y。我创建了这张表来组织它。
CREATE Table Base31
(ID varchar(1),
NumberValue bigint)
GO
Insert into Base31 SELECT '0', '0'
Insert into Base31 SELECT '1', '1'
Insert into Base31 SELECT '2', '2'
Insert into Base31 SELECT '3', '3'
Insert into Base31 SELECT '4', '4'
Insert into Base31 SELECT '5', '5'
Insert into Base31 SELECT '6', '6'
Insert into Base31 SELECT '7', '7'
Insert into Base31 SELECT '8', '8'
Insert into Base31 SELECT '9', '9'
Insert into Base31 SELECT 'B', '10'
Insert into Base31 SELECT 'C', '11'
Insert into Base31 SELECT 'D', '12'
Insert into Base31 SELECT 'F', '13'
Insert into Base31 SELECT 'G', '14'
Insert into Base31 SELECT 'H', '15'
Insert into Base31 SELECT 'J', '16'
Insert into Base31 SELECT 'K', '17'
Insert into Base31 SELECT 'L', '18'
Insert into Base31 SELECT 'M', '19'
Insert into Base31 SELECT 'N', '20'
Insert into Base31 SELECT 'P', '21'
Insert into Base31 SELECT 'Q', '22'
Insert into Base31 SELECT 'R', '23'
Insert into Base31 SELECT 'S', '24'
Insert into Base31 SELECT 'T', '25'
Insert into Base31 SELECT 'V', '26'
Insert into Base31 SELECT 'W', '27'
Insert into Base31 SELECT 'X', '28'
Insert into Base31 SELECT 'Y', '29'
Insert into Base31 SELECT 'Z', '30'
我正在尝试将这些主键转换为数值,但我一直在运行 int 限制。我已经更改了所有内容以使用大的 int 数据类型。如何获得使用大 int 数据类型的算术?
GO
CREATE Proc Base_31 @v varchar(8)
as
DECLARE @Ai bigint
DECLARE @Bi bigint
DECLARE @Ci bigint
DECLARE @Di bigint
DECLARE @Ei bigint
DECLARE @Fi bigint
DECLARE @Gi bigint
DECLARE @Hi bigint
SELECT @Ai = NumberValue from Base31 where RIGHT(@v,1) = ID
SELECT @Bi = (NumberValue * POWER(31,1)) from Base31 where LEFT(RIGHT(@v,2),1) = ID
SELECT @Ci = (NumberValue * POWER(31,2)) from Base31 where LEFT(RIGHT(@v,3),1) = ID
SELECT @Di = (NumberValue * POWER(31,3)) from Base31 where LEFT(RIGHT(@v,4),1) = ID
SELECT @Ei = (NumberValue * POWER(31,4)) from Base31 where LEFT(RIGHT(@v,5),1) = ID
SELECT @Fi = (NumberValue * POWER(31,5)) from Base31 where LEFT(RIGHT(@v,6),1) = ID
SELECT @Gi = (NumberValue * POWER(31,6)) from Base31 where LEFT(RIGHT(@v,7),1) = ID
SELECT @Hi = (NumberValue * POWER(31,7)) from Base31 where LEFT( @v ,1) = ID
SELECT @v AS Original
, Cast(@Ai AS bigint)
+ Cast(@Bi AS bigint)
+ Cast(@Ci AS bigint)
+ Cast(@Di AS bigint)
+ Cast(@Ei AS bigint)
+ Cast(@Fi AS bigint)
+ Cast(@Gi AS bigint)
+ Cast(@Hi AS bigint)
as [Base 31 converted]
GO