{"id":23114,"date":"2022-11-24T01:49:33","date_gmt":"2022-11-23T20:19:33","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-conversion-function-in-sql-server\/"},"modified":"2022-11-24T01:49:33","modified_gmt":"2022-11-23T20:19:33","slug":"solved-conversion-function-in-sql-server","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-conversion-function-in-sql-server\/","title":{"rendered":"[Solved] Conversion function in SQL Server"},"content":{"rendered":"

[ad_1]
\n<\/p>\n

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<\/div>\n
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Seems like you want to turn a base36 number into a base10 number. <\/p>\n

Then you could create a function for base conversion.<\/p>\n

The function<\/strong>\n<\/p>\n

create function dbo.fnBase36ToBase10(@input varchar(8))\nreturns int\nas\nbegin\n  declare @base36string varchar(8) = upper(@input);\n  declare @result int = 0;\n  declare @basechars varchar(36) = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';\n  declare @N int = 36;\n  declare @digit char(1);\n  declare @pow int = 0;\n\n  while @pow < len(@base36string)\n  begin\n    set @Digit = substring(reverse(@base36string),@Pow+1,1);\n    set @result = @result + (charindex(@Digit, @basechars)-1) * power(@N, @pow);\n    set @pow = @pow + 1;\n  end\n  return @result;\nend;\nGO\n<\/code><\/pre>\n
Example using the function<\/strong>\n<\/p>\n
select code, (dbo.fnBase36ToBase10(code) - 234) as num\nfrom (values\n ('99'),('9A'),('9B'),('9C')\n,('9Z'),('A0')\n,('A9'),('AA'),('AB')\n) AS codes(code)\norder by num;\n<\/code><\/pre>\n
Returns:<\/strong>\n<\/p>\n
code    num\n99      99\n9A      100\n9B      101\n9C      102\n9Z      125\nA0      126\nA9      135\nAA      136\nAB      137\n<\/code><\/pre>\n
And if creating a function isn’t an option.
\nThen you could join to a Tally Table that contains the conversion between the
\nBase36 and Base10 numbers.<\/p>\n
Example:<\/strong>\n<\/p>\n
IF OBJECT_ID('tempdb..#Base36ToBase10') IS NOT NULL DROP TABLE #Base36ToBase10;\nCREATE TABLE #Base36ToBase10 (base36 varchar(2) COLLATE Latin1_General_CS_AS primary key, base10 int);\n\n-- Fill Tally Table\n;WITH CHARS AS \n(\n    select 0 as n, convert(char(1),0) as c \n    union all \n    select n+1, iif(n<9,convert(char(1),n+1),char(n+56)) \n    from CHARS where n < 35\n)\ninsert into #Base36ToBase10 (base36, base10)\nselect \n concat(c2.c,c1.c) as b36, \n (c2.n*36+c1.n) as b10\nfrom CHARS c1\ncross join CHARS c2\norder by c2.c, c1.c;\n\ndeclare @codes table (code varchar(2));\ninsert into @codes (code) values\n ('99'),('9A'),('9B'),('9C')\n,('9Z'),('A0')\n,('A9'),('AA'),('AB')\n;\n\nselect code, (b36to10.base10 - 234) as num\nfrom @codes AS codes\njoin #Base36ToBase10 as b36to10 \n  on codes.code collate Latin1_General_CS_AS = b36to10.base36\norder by num;\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            1<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Conversion function in SQL Server <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Seems like you want to turn a base36 number into a base10 number. Then you could create a function for base conversion. The function create function dbo.fnBase36ToBase10(@input varchar(8)) returns int as begin declare @base36string varchar(8) = upper(@input); declare @result int = 0; declare @basechars varchar(36) = ‘0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ’; declare @N int = 36; declare @digit … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[413,341,500],"class_list":["post-23114","post","type-post","status-publish","format-standard","hentry","category-solved","tag-function","tag-sql","tag-sql-server"],"yoast_head":"\n[Solved] Conversion function in SQL Server - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-conversion-function-in-sql-server\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Conversion function in SQL Server - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Seems like you want to turn a base36 number into a base10 number. Then you could create a function for base conversion. The function create function dbo.fnBase36ToBase10(@input varchar(8)) returns int as begin declare @base36string varchar(8) = upper(@input); declare @result int = 0; declare @basechars varchar(36) = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'; declare @N int = 36; declare @digit ... 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Then you could create a function for base conversion. The function create function dbo.fnBase36ToBase10(@input varchar(8)) returns int as begin declare @base36string varchar(8) = upper(@input); declare @result int = 0; declare @basechars varchar(36) = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'; declare @N int = 36; declare @digit ... 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