Choose string between two chars that repeat multiple times in a string - sql

I have a string '"&"abc1"#"1"&""abc2"#"2"&""abc3"#"3"&""abc1"#"4
I just want to extract each int into separate variables. Currently I have
note endtext = "#"
and endnum = "&"
WHILE #N < LEN(#TextField)
BEGIN
SET #read1 = (
SELECT SUBSTRING(#TextFieled,
CHARINDEX(#endtext, #TextFieled) + #N --Increment 2 so skips to next "
, CHARINDEX(#endnum,#TextFieled) - CHARINDEX(#endtext, #TextFieled)) --MANY CHARS TO GO FOR
)
SELECT #read1
SET #N = #N + CHARINDEX(#read1, #TextFieled) --next strating point
END
But it is not returning only numbers. I think the problem lies with the fact that the nums I want to pick are located in repeated strings, so I'm not sure how to alter my loop to skip.

For readability and debug-ability use variable to store CHARINDEX
DECLARE
#N int = 2,
#TextField varchar(100) = '"&"abc1"#"1"&""abc2"#"2"&""abc3"#"3"&""abc1"#"4',
#read1 varchar(10),
#endtext varchar(3) = '"#"',
#endnum varchar(3) = '"&"',
#Start int,
#Finish int
WHILE #N < LEN(#TextField)
BEGIN
SET #Start = CHARINDEX(#endtext, #TextField, #N)
SET #Finish =CHARINDEX(#endnum, #TextField, #N)
IF #Finish = 0 SET #Finish = LEN(#TextField) + 1
SET #read1 = (SELECT SUBSTRING(#TextField, #Start + 3, #Finish - #Start - 3))
SELECT #read1 xRead
SET #N = #Finish + 1 --next strating point
END

Related

While Loop does not complete its execution in the stored procedure in SQL Server

I am writing a store procedure that accepts two inputs such as startingNumber=A00001 and EndingNumber=A00049 which should generate number as follows and insert in the table:
A00001
A00002
A00003
A00004
.
.
.
A00049
But the stored procedure is not working as desired and it keeps on executing and does not get completed. Can anyone help me to figure out where it went wrong and how to solve it. Is it the appropriate approach for doing such things and i would be more happy if someone could give me some other alternative solutions.
Here is the stored procedure that i have written:
CREATE PROCEDURE [dbo].[spInsertNumbers]
#StartingNumber nvarchar(25),
#EndingNumber nvarchar(25)
AS
Declare #StartIndex int
Declare #EndIndex int
Declare #Series varchar(5)
Declare #StartNumber int
Declare #EndNumber int
Declare #No nvarchar(25)
Declare #StartCounter int
Declare #EndCounter int
Declare #Number varchar(15)
--Getting the letter
set #Series = substring(#StartingNumber, 1, 1)
--Getting the starting index of the starting and ending Number
set #StartIndex = patindex('%[1-9]%', #StartingNumber)
set #EndIndex = patindex('%[1-9]%', #EndingNumber)
--Getting the starting and ending number
set #StartNumber = substring(#StartingNumber, #StartIndex, 6)
set #EndNumber = substring(#EndingNumber, #EndIndex, 6)
--Converting number string to integer
set #StartCounter = Convert(int, #StartNumber)
set #EndCounter = Convert(int, #EndNumber)
while (#StartCounter <= #EndCounter)
set #Number = CONVERT(varchar, #StartCounter)
if #StartCounter >= 1 and #StartCounter < 10
set #No = #Series + '0000' + #Number
if #StartCounter >= 10 and #StartCounter < 100
set #No= #Series + '000' + #Number
if #StartCounter >= 100 and #StartCounter < 1000
set #No= #Series + '00' + #Number
if #StartCounter >= 1000 and #StartCounter < 10000
set #No= #Series + '0' + #Number
if #StartCounter >= 10000 and #StartCounter < 100000
set #No= #Series + #Number
BEGIN
Insert into TestingNumber(Number)
Values(#No);
set #StartCounter = #StartCounter + 1
END
you should write BEGIN after while. Otherwise, it makes an infinite loop at your procedure.
CREATE PROCEDURE [dbo].[spInsertNumbers]
#StartingNumber nvarchar(25),
#EndingNumber nvarchar(25)
AS
Declare #StartIndex int
Declare #EndIndex int
Declare #Series varchar(5)
Declare #StartNumber int
Declare #EndNumber int
Declare #No nvarchar(25)
Declare #StartCounter int
Declare #EndCounter int
Declare #Number varchar(15)
--Getting the letter
set #Series = substring(#StartingNumber, 1, 1)
--Getting the starting index of the starting and ending Number
set #StartIndex = patindex('%[1-9]%', #StartingNumber)
set #EndIndex = patindex('%[1-9]%', #EndingNumber)
--Getting the starting and ending number
set #StartNumber = substring(#StartingNumber, #StartIndex, 6)
set #EndNumber = substring(#EndingNumber, #EndIndex, 6)
--Converting number string to integer
set #StartCounter = Convert(int, #StartNumber)
set #EndCounter = Convert(int, #EndNumber)
while (#StartCounter <= #EndCounter)
BEGIN
set #Number = CONVERT(varchar, #StartCounter)
if #StartCounter >= 1 and #StartCounter < 10
set #No = #Series + '0000' + #Number
if #StartCounter >= 10 and #StartCounter < 100
set #No= #Series + '000' + #Number
if #StartCounter >= 100 and #StartCounter < 1000
set #No= #Series + '00' + #Number
if #StartCounter >= 1000 and #StartCounter < 10000
set #No= #Series + '0' + #Number
if #StartCounter >= 10000 and #StartCounter < 100000
set #No= #Series + #Number
Insert into TestingNumber(Number)
Values(#No);
set #StartCounter = #StartCounter + 1
END

How to compare two strings based on percent match in SQL

I want to post a solution to a interesting problem I was facing in T-SQL.
The problem:
Compare two string fields based on a percent match.
In addition, the two strings may have the words in them translocated.
For example: "Joni Bravo" and "Bravo Joni". These two strings should return a match of 100%, which means that position is not relevant. Few more things worth noting are that this code is made to compare strings that have space as delimiter in them. If the first string doesnt have space the match is set to 100% without actual check. This was not developed, because the strings this function is ment to compare always contain two or more words. Also, it is written on MS SQL Server 2017 if that mathers.
So here is the solution, hope this helps anyone :)
gl
/****** Object: UserDefinedFunction [dbo].[STRCOMP] Script Date: 29/03/2018 15:31:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE FUNCTION [dbo].[STRCOMP] (
-- Add the parameters for the function here
#name_1 varchar(255),#name_2 varchar(255)
)
RETURNS float
AS
BEGIN
-- Declare the return variable and any needed variable here
declare #p int = 0;
declare #c int = 0;
declare #br int = 0;
declare #p_temp int = 0;
declare #emergency_stop int = 0;
declare #fixer int = 0;
declare #table1_temp table (
row_id int identity(1,1),
str1 varchar (255));
declare #table2_temp table (
row_Id int identity(1,1),
str2 varchar (255));
declare #n int = 1;
declare #count int = 1;
declare #result int = 0;
declare #total_result float = 0;
declare #result_temp int = 0;
declare #variable float = 0.0;
--clean the two strings from unwanted symbols and numbers
set #name_1 = REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(#name_1,'!',''),' ',' '),'1',''),'2',''),'3',''),'4',''),'5',''),'0',''),'6',''),'7',''),'8',''),'9','');
set #name_2 = REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(#name_2,'!',''),' ',' '),'1',''),'2',''),'3',''),'4',''),'5',''),'0',''),'6',''),'7',''),'8',''),'9','');
--check if the first string has more than one words inside. If the string does
--not have more than one words, return 100%
set #c = charindex(' ',substring(#name_1,#p,len(#name_1)));
IF(#c = 0)
BEGIN
RETURN 100.00
END;
--main logic of the operation. This is based on sound indexing and comparing the
--outcome. This loops through the string whole words and determines their soundex
--code and then compares it one against the other to produce a definitive number --showing the raw match between the two strings #name_1 and #name_2.
WHILE (#br != 2 or #emergency_stop = 20)
BEGIN
insert into #table1_temp(str1)
select substring (#name_1,#p,#c);
set #p = len(substring (#name_1,#p,#c))+2;
set #p = #p + #p_temp - #fixer;
set #p_temp = #p;
set #c = CASE WHEN charindex(' ',substring(#name_1,#p,len(#name_1))) = 0 THEN len(#name_1) ELSE charindex(' ',substring(#name_1,#p,len(#name_1))) END;
set #fixer = 1;
set #br = CASE WHEN charindex(' ',substring(#name_1,#p,len(#name_1))) = 0 THEN #br + 1 ELSE 0 END;
set #emergency_stop = #emergency_stop +1;
END;
set #p = 0;
set #br = 0;
set #emergency_stop = 0;
set #fixer = 0;
set #p_temp = 0;
set #c = charindex(' ',substring(#name_2,#p,len(#name_2)));
WHILE (#br != 2 or #emergency_stop = 20)
BEGIN
insert into #table2_temp(str2)
select substring (#name_2,#p,#c);
set #p = len(substring (#name_2,#p,#c))+2;
set #p = #p + #p_temp - #fixer;
set #p_temp = #p;
set #c = CASE WHEN charindex(' ',substring(#name_2,#p,len(#name_2))) = 0 THEN len(#name_2) ELSE charindex(' ',substring(#name_2,#p,len(#name_2))) END;
set #fixer = 1;
set #br = CASE WHEN charindex(' ',substring(#name_2,#p,len(#name_2))) = 0 THEN #br + 1 ELSE 0 END;
set #emergency_stop = #emergency_stop +1;
END;
WHILE((select str1 from #table1_temp where row_id = #n) is not null)
BEGIN
set #count = 1;
set #result = 0;
WHILE((select str2 from #table2_temp where row_id = #count) is not null)
BEGIN
set #result_temp = DIFFERENCE((select str1 from #table1_temp where row_id = #n),(select str2 from #table2_temp where row_id = #count));
IF(#result_temp > #result)
BEGIN
set #result = #result_temp;
END;
set #count = #count + 1;
END;
set #total_result = #total_result + #result;
set #n = #n + 1;
END;
--gather the results and transform them in a percent match.
set #variable = (select #total_result / (select max(row_count) from (
select max(row_id) as row_count from #table1_temp
union
select max(row_id) as row_count from #table2_temp) a));
RETURN #variable/4 * 100;
END
GO
PS: I decided to write it in a user-defined function just for the needs of my project.

SQL Server stored procedure: finding the values of Odd and even

I'm using #subno as Input. And I had to find the odd and even numbers. 16 is not a fix and it can be any other number. My question is how to find the odd and even number of my input?
Lastly, subno includes ( . ) dot at any position. e.g 123456.789123 I need to find the odd and even number of "123456" and the odd and even number of "789123" the dot ( . ) is the separator.
Once you find the odd for the left side, sum them up together. Once you find the even number for left side sum it up as well and then add the total odd to the total even values. That goes the same for the right side eg "789123".
Please help me. this is my 2nd week of trying to find the solution. Once you find all the total values for each side, multiply them together. example "123456" - total value of odd and even * the "789123" total value of odd and even.
It is for the the check digit validation. Validating the subscriber number. after validating through the calculation it should match the calculated reference number to the valid check digit number. It's the business rule. Kind of algorithm
create procedure ProcedureName
(#subno VARCHAR(16), --Input the 16 subscriber number
#result INT OUT,
)
as
begin
IF(LEN(#subno) <> 16)
SET #result = 1 -- INVALID RESULT
ELSE
IF(#subno % 2 = 0)
SET #result = #subno - even numbers
ELSE
SET #result = #subno --odd numbers
end
Please see below my sample work
-- this is the sample
create procedure ProcedureName
(
#subno VARCHAR(20), --Subscriber no
#result INT OUT, --result is invalid for 1, valid for 0
#payamt int
)
as
DECLARE #WA VARCHAR(2)
DECLARE #Weights varchar(9)
DECLARE #I INT
DECLARE #WD INT
DECLARE #WP INT
DECLARE #A INT
DECLARE #B INT
DECLARE #R INT
DECLARE #WR INT
SET #WR = 0
SET #R = 0
SET #A = 0
SET #B = 0
SET #WP = 0
SET #I = 0
BEGIN
IF (LEN(#subNo) = 7) AND (SUBSTRING(#subno,1,1) = '2') OR (SUBSTRING(#subno,1,1) = '9')
BEGIN
SET #result = 0 --VALID
END
ELSE IF(LEN(#subno) = 8) AND (SUBSTRING(#subno,1,1) = '2') OR
(SUBSTRING(#subno,1,1) = '9')
BEGIN
SET #result = 0 --VALID
END
ELSE IF(LEN(#subno) = 9)
BEGIN
SET #WA = SUBSTRING(#subno,1,2)
IF(#WA = '65')
set #result = 1 -- INVALID
else
BEGIN
SET #Weights = '12121212'
SET #WA = SUBSTRING(#subno,9,1)
SET #WD = 0
SET #I = 1
WHILE #I<9
BEGIN
SET #WP = cast(SUBSTRING(#Weights, #I,1)as int) * cast(SUBSTRING(#subno, #I, 1) as int)
IF(#WP > 9)
BEGIN
SET #A = SUBSTRING(CAST(#WP AS VARCHAR),1,1)
SET #B = SUBSTRING(CAST(#WP AS VARCHAR),2,1)
SET #WP = CAST(#A AS INT) + CAST(#B AS INT)
END
SET #WD = #WP + #WD
SET #I = #I + 1
END
SET #R = #WD % 10
IF(#R <> 0)
SET #WR = 10 - #R
ELSE
SET #WR = #R
IF(#WR <> CAST(#WA AS INT))
BEGIN
SET #result = 1 -- INVALID
END
ELSE
BEGIN
SET #result = 0 -- VALID
END
END
END
ELSE IF (LEN(#subno) = 10)
BEGIN
SET #I =1
SET #WD = 0
SET #Weights = '121212121'
SET #WA = SUBSTRING(#subno,10,1)
WHILE(#I < 10)
BEGIN
SET #WP = CAST(SUBSTRING(#Weights, #I, 1)AS INT) * CAST(SUBSTRING(#subno, #I, 1) AS INT)
IF(#WP > 9)
BEGIN
SET #A = SUBSTRING(CAST(#WP AS VARCHAR),1,1)
SET #B = SUBSTRING(CAST(#WP AS VARCHAR),2,1)
SET #WP = CAST(#A AS INT) + CAST(#B AS INT)
END
SET #WD = #WP + #WD
SET #I = #I + 1
END
SET #R = #WD % 10
IF(#R <> 0)
SET #WR = 10 - #R
ELSE
SET #WR = #R
IF (#WR<> #WA)
BEGIN
SET #result = 1 -- INVALID
END
ELSE
BEGIN
SET #result = 0 -- VALID
END
END
ELSE
SET #result = 1 -- INVALID
END
Split the values which u get . Then iterate iver each side and add them. Please see the sample below.
declare #v varchar (16) , #num1 varchar(20) , #num2 varchar(20)
set #v = '1234567.78906656'
select #num1 = substring(#v,0,charindex('.',#v))
select #num2 = substring(#v,charindex('.',#v)+1,len(#v))
--select #num1 = convert(int, substring(#v,0,charindex('.',#v)))
--select #num2 = substring(#v,charindex('.',#v)+1,len(#v))
declare #index int = 1 ,#len INT , #char CHAR
declare #TotalOddL int = 0
declare #TotalEvenL int = 0
DECLARE #FullTotL INT = 0
declare #TotalOddR int = 0
declare #TotalEvenR int = 0
DECLARE #FullTotR INT = 0
DECLARE #TEMP INT
set #len= LEN(#num1)
WHILE #index <= #len
BEGIN
set #char = SUBSTRING(#num1, #index, 1)
SET #TEMP = cast(#char as int)
IF(#TEMP % 2 = 0)
SET #TotalEvenL = #TotalEvenL + #char
else
SET #TotalOddL = #TotalOddL + #char
SET #FullTotL = #TotalEvenL + #TotalOddL
SET #index= #index+ 1
END
Select 'LeftSide total' , #FullTotL
Select 'Left Side odd' , #TotalOddL
Select 'Left Side Even' , #TotalEvenL
SET #index = 1
set #len= LEN(#num2)
WHILE #index <= #len
BEGIN
set #char = SUBSTRING(#num2, #index, 1)
SET #TEMP = cast(#char as int)
IF(#TEMP % 2 = 0)
SET #TotalEvenR= #TotalEvenR + #char
else
SET #TotalOddR = #TotalOddR + #char
SET #FullTotR = #TotalEvenR + #TotalOddR
SET #index= #index+ 1
END
select 'TotalRSide' , #FullTotR
select 'RsideOdd' , #TotalOddR
select 'RSideEven' , #TotalEvenR
select 'Multiplied value' , #FullTotR * #FullTotL
create or replace procedure prc_even_odd(i_number in number, o_result out varchar2)
as
begin
if (mod(i_number,2) = 0) then
o_result := 'EVEN';
else
o_result := 'ODD';
end prc_even;

search in a string creditcard numeric value

I want to find a credit card numeric value in a sql string.
for example;
DECLARE #value1 NVARCHAR(MAX) = 'The payment is the place 1234567812345678'
DECLARE #value2 NVARCHAR(MAX) = 'The payment is the place 123456aa7812345678'
DECLARE #value3 NVARCHAR(MAX) = 'The payment1234567812345678is the place'
The result should be :
#value1Result 1234567812345678
#value2Result NULL
#value3Result 1234567812345678
16 digits must be together without space.
How to do this in a sql script or a function?
edit :
if I want to find these 2 credit card value.
#value4 = 'card 1 is : 4034349183539301 and the other one is 3456123485697865'
how should I implement the scripts?
You can use PathIndex as
PATINDEX('%[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]%', yourStr)
if the result is 0 then it doesnt containg 16 digits other was it contains.
It can be used withing a Where statement or Select statement based on your needs
You can write as:
SELECT case when Len(LEFT(subsrt, PATINDEX('%[^0-9]%', subsrt + 't') - 1)) = 16
then LEFT(subsrt, PATINDEX('%[^0-9]%', subsrt + 't') - 1)
else ''
end
FROM (
SELECT subsrt = SUBSTRING(string, pos, LEN(string))
FROM (
SELECT string, pos = PATINDEX('%[0-9]%', string)
FROM table1
) d
) t
Demo
DECLARE #value1 NVARCHAR(MAX) = 'card 1 is : 4034349183539301 and the other one is 3456123485697865'
DECLARE #Lenght INT
,#Count INT
,#Candidate CHAR
,#cNum INT
,#result VARCHAR(16)
SELECT #Count = 1
SELECT #cNum = 0
SELECT #result = ''
SELECT #Lenght = LEN(#value1)
WHILE #Count <= #Lenght
BEGIN
SELECT #Candidate = SUBSTRING(#value1, #Count, 1)
IF #Candidate != ' '
AND ISNUMERIC(#Candidate) = 1
BEGIN
SET #cNum = #cNum + 1
SET #result = #result + #Candidate
END
ELSE
BEGIN
SET #cNum = 1
SET #result = ''
END
IF #cNum > 16
BEGIN
SELECT #result 'Credit Number'
END
SET #Count = #Count + 1
END
There you go kind sir.
DECLARE
#value3 NVARCHAR(MAX) = 'The payment1234567812345678is the place',
#MaxCount int,
#Count int,
#Numbers NVARCHAR(100)
SELECT #Count = 1
SELECT #Numbers = ''
SELECT #MaxCount = LEN(#value3)
WHILE #Count <= #MaxCount
BEGIN
IF (UNICODE(SUBSTRING(#value3,#Count,1)) >= 48 AND UNICODE(SUBSTRING(#value3,#Count,1)) <=57)
SELECT #Numbers = #Numbers + SUBSTRING(#value3,#Count,1)
SELECT #Count = #Count + 1
END
PRINT #Numbers
You can make this as a function if you are planning to use it a lot.

SQL proc to calculate check digit for 7 and 12 digit upc

I just had to scour the internet for this code yet again so I figured I would put it here so I can find it a little faster the next time and hopefully you found it a little faster too :)
Check this.
The code below can check digit in all GTIN's (EAN8, EAN13, EAN14, UPC/A, UPC/E)
CREATE FUNCTION [dbo].[check_digit]
(
#GTIN VARCHAR(14)
)
RETURNS TINYINT
AS
BEGIN
DECLARE #Index TINYINT,
#Multiplier TINYINT,
#Sum TINYINT,
#checksum TINYINT,
#result TINYINT,
#GTIN_strip VARCHAR(13)
SELECT #GTIN_strip = SUBSTRING(#GTIN,1,LEN(#GTIN)-1);
SELECT #Index = LEN(#GTIN_strip),
#Multiplier = 3,
#Sum = 0
WHILE #Index > 0
SELECT #Sum = #Sum + #Multiplier * CAST(SUBSTRING(#GTIN_strip, #Index, 1) AS TINYINT),
#Multiplier = 4 - #Multiplier,
#Index = #Index - 1
SELECT #checksum = CASE #Sum % 10
WHEN 0 THEN '0'
ELSE CAST(10 - #Sum % 10 AS CHAR(1))
END
IF (SUBSTRING(#GTIN,LEN(#GTIN),1) = #checksum)
RETURN 1; /*true*/
RETURN 0; /*false*/
END
CREATE FUNCTION [dbo].[fn_EAN13CheckDigit] (#Barcode nvarchar(12))
RETURNS nvarchar(13)
AS
BEGIN
DECLARE #SUM int , #COUNTER int, #RETURN varchar(13), #Val1 int, #Val2 int
SET #COUNTER = 1 SET #SUM = 0
WHILE #Counter < 13
BEGIN
SET #VAL1 = SUBSTRING(#Barcode,#counter,1) * 1
SET #VAL2 = SUBSTRING(#Barcode,#counter + 1,1) * 3
SET #SUM = #VAL1 + #SUM
SET #SUM = #VAL2 + #SUM
SET #Counter = #Counter + 2;
END
SET #SUM=(10-(#SUM%10))%10
SET #Return = #BARCODE + CONVERT(varchar,((#SUM)))
RETURN #Return
END
And here's a MySQL implementation as well.
Note it requires a 13 digit UPC/EAN13 as input, so you should LPAD your input as required.
drop function if exists barcodify;
delimiter //
at the last digit.
create function barcodify(upc varchar(15))
returns varchar(15)
sql security invoker
begin
declare i, r, odd, even,result int;
set odd=0;
set even =0;
set i = length(upc);
while i > 0 do
set r = substring(upc, i, 1) ;
if(i % 2 >0) then set odd = odd + r;
else set even = even + r;
end if;
set i = i - 1;
end while;
set result = (3*odd)+even;
if result % 10 =0 then return 0;
else return (10 - (result %10));
end if;
end //
delimiter ;
Here's my implementation of a function in Oracle.
CREATE OR REPLACE FUNCTION GenerateCheckDigit(pUPC IN VARCHAR2) RETURN INT
IS
vCheckDigit INT;
BEGIN
WITH barcodeData AS
(
SELECT pUPC barcode FROM dual
)
SELECT
10-REPLACE(MOD(SUM(SUBSTR(barcode, -LEVEL, 1) * DECODE(MOD(LEVEL-1, 2), 1, 1, 3)),10),0,10) INTO vCheckDigit
FROM barcodeData
CONNECT BY LEVEL <= LENGTH(barcode);
RETURN vCheckDigit;
END;
To calculate the last digit.
https://segovoni.medium.com/sql-server-function-to-calculate-gs1-barcode-check-digit-d55b478ff645
CREATE FUNCTION dbo.udf_GetGS1EAN13CheckDigit
(
#ACode AS VARCHAR(12)
)
RETURNS SMALLINT
AS BEGIN
/*
Author: Sergio Govoni
Notes: Calculate the check-digit of a GS1 EAN13 code
Version: 1.0
*/
DECLARE
#tmpCode AS VARCHAR(12)
,#tmpMulSup AS VARCHAR(8000)
,#tmp AS VARCHAR(8000)
,#i AS INT
,#j AS INT
,#z AS INT
,#SumDEven AS INT
,#SumDOdd AS INT
,#List AS VARCHAR(8000)
,#tmpList AS VARCHAR(8000)
,#CheckSum AS SMALLINT
SET #SumDEven = 0
SET #SumDOdd = 0
SET #List = ''
SET #tmpList = ''
SET #tmp = ''
SET #tmpCode = #ACode
/* 0. List builder */
SET #j = LEN(#tmpCode) + 1
SET #i = 1
WHILE (#i <= LEN(#tmpCode)) BEGIN SET #List = #List + '|' + LTRIM(RTRIM(STR(#j))) + ';' + SUBSTRING(#tmpCode, #i, 1) SET #j = (#j - 1) SET #i = (#i + 1) END /* 1. Add up the digits in even position */ SET #i = 1 SET #tmpList = #List WHILE (CHARINDEX('|', #tmpList) > 0)
BEGIN
SET #j = CHARINDEX('|', #tmpList)
SET #z = CHARINDEX(';', #tmpList)
IF (CAST(SUBSTRING(#tmpList, (#j + 1), (#z - (#j + 1))) AS INTEGER) % 2) = 0
BEGIN
SET #SumDEven = #SumDEven + CAST(SUBSTRING(#tmpList, (#z + 1), 1) AS INTEGER)
END
SET #tmpList = SUBSTRING(#tmpList, (#z + 2), LEN(#tmpList))
END
/* 2. Multiply the result of the previous step (the first step) to 3 (three) */
SET #SumDEven = (#SumDEven * 3)
/* 3. Add up the digits in the odd positions */
SET #i = 1
SET #tmpList = #List
WHILE (CHARINDEX('|', #tmpList) > 0)
BEGIN
SET #j = CHARINDEX('|', #tmpList)
SET #z = CHARINDEX(';', #tmpList)
IF (CAST(SUBSTRING(#tmpList, (#j + 1), (#z - (#j + 1))) AS INTEGER) % 2) <> 0
BEGIN
SET #SumDOdd = #SumDOdd + CAST(SUBSTRING(#tmpList, (#z + 1), 1) AS INTEGER)
END
SET #tmpList = SUBSTRING(#tmpList, (#z + 2), LEN(#tmpList))
END
/* 4. Add up the results obtained in steps two and three */
SET #CheckSum = (#SumDEven + #SumDOdd)
/* 5. Subtract the upper multiple of 10 from the result obtained in step four */
IF ((#CheckSum % 10) = 0)
BEGIN
/* If the result of the four step is a multiple of Ten (10), like
Twenty, Thirty, Forty and so on,
the check-digit will be equal to zero, otherwise the check-digit will be
the result of the fifth step
*/
SET #CheckSum = 0
END
ELSE BEGIN
SET #tmpMulSup = LTRIM(RTRIM(STR(#CheckSum)))
SET #i = 0
WHILE #i <= (LEN(#tmpMulSup) - 1)
BEGIN
SET #tmp = #tmp + SUBSTRING(#tmpMulSup, #i, 1)
IF (#i = LEN(#tmpMulSup) - 1)
BEGIN
SET #tmp = LTRIM(RTRIM(STR(CAST(#tmp AS INTEGER) + 1)))
SET #tmp = #tmp + '0'
END
SET #i = (#i + 1)
END
SET #CheckSum = CAST(#tmp AS INTEGER) - #CheckSum
END
RETURN #CheckSum
END;
CREATE FUNCTION sfn_ean_chkdigit(#barcode varchar(20))
RETURNS CHAR(1)
AS
BEGIN
DECLARE #chk_digit int, #chk int
DECLARE #num TABLE (num int)
IF LEN(#barcode) NOT IN (7, 12) RETURN NULL
INSERT INTO #num
SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL
SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL
SELECT 9 UNION ALL SELECT 10 UNION ALL SELECT 11 UNION ALL SELECT 12
SELECT #chk_digit = SUM(CONVERT(int, SUBSTRING(#barcode, LEN(#barcode) - num + 1, 1)) * CASE WHEN num % 2 = 1 THEN 3 ELSE 1 END)
FROM #num
WHERE num <= LEN(#barcode)
SELECT #chk_digit = (10 - (#chk_digit % 10)) % 10
RETURN CHAR(ASCII('0') + #chk_digit)
END
Num unico script
select lpad('123456789012',12,'0') || ( (r+1)*10 - soma )%10
from (select sum(v::int * case when i%2=0 then 3 else 1 end) soma,
round(sum(v::int * case when i%2=0 then 3 else 1 end)/10.0) r
from unnest(string_to_array(lpad('123456789012',12,'0'),null)) with ordinality d(v,i)
) a