SQL Server 2008 :: Generate 8 Char Alphanumeric Unique Sequence

Apr 20, 2015

GENERATE 8 CHARACTER ALPHANUMERIC SEQUENCES

Requirements
• ALPHANUMERIC FORMAT – > AA00AA00………..ZZ99ZZ99
Last 8 bytes will alternate between 2 byte alpha/2 byte numeric
• Generate from Alphabets – A through Z Numbers -0 to 9
• Generate Unique Sequence (No Duplicates).
• Must Eliminate letters I and O

Output Expected
• AA00AA00………..ZZ99ZZ99
• Using 24 alphabets & 10 digits ,
24*24*10*10*24*24 = 3 317 760 000 records

Below is my Sql Function -

CREATE function [dbo].[SequenceComplexNEW]
(
@Id BIGINT
)
Returns char(8)

[Code] .....

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Generate 8 Character Alphanumeric Sequence

Apr 20, 2015

Requirements
•ALPHANUMERIC FORMAT – > AA00AA00………..ZZ99ZZ99
Last 8 bytes will alternate between 2 byte alpha/2 byte numeric
•Generate from Alphabets – A through Z Numbers -0 to 9
•Generate Unique Sequence (No Duplicates).
•Must Eliminate letters I and O
Output Expected
•AA00AA00………..ZZ99ZZ99
•Using 24 alphabets & 10 digits ,
24*24*10*10*24*24 = 3 317 760 000 records

Below is my Sql Function -

CREATE function [dbo].[SequenceComplexNEW]
(
@Id BIGINT
)
Returns char(8)
AS
BEGIN
DECLARE @OUT AS CHAR(8)--,@Id as Bigint

[Code] ....

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May 6, 2011

How do I convert (n)(var)char to time? I tried several ways including a simple:

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Conversion failed when converting date and/or time from character string.

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Apr 13, 2015

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Jun 30, 2015

In my asp.net project there are about 100 drop down list.I created a table to store data for drop down list in which including [DropdownID],[Order Sequence] and [Description] three columns. The sample like below. Data was input manually by a user. How to code to find out duplicate [OrderSequence]?

DropdownID--OrderSequence--Description
1-------------0--------------AAA
1-------------1--------------BBB
2-------------0--------------YYY
2-------------1--------------XXX
2-------------2--------------QQQ 'DUPLICATE OrderSequence
2-------------2--------------WWW 'DUPLICATE OrderSequence
2-------------3--------------RRR

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Oct 29, 2007

Dear all,

I'm new in writing t-sql. Now I want to perform the following task:

1) pass a non zero integer to sql procedure, the procedure will select fields from tableA, for example,

if input parameter is 5, the result is (the column seq no is not in tableA, I want to generate sequence no):

seq no Customer code Customer name
------------------------------------------------------------------
6 abcde Peter
7 efghi John
8 jklmn Mary
:
etc


How to do this?

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Mar 5, 2015

I want to make a query with the result like this, where Seqno is the result query which has repeating sequence number for same Field1

Field1Field2SeqNo
BVFUSBVFUS011
BVFUSBVFUS021
BVFUSBVFUS031
BVFRPBVFRP012
BVFRPBVFRP022

[Code] ....

I want the result also no ordered by Field1. it just as the natural order of the table..

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How can I get time difference of the following record :

STARTTIME ENDTIME
3:30 PM 4:30PM
7:30 PM 8:30PM

I have tried it by below query,

SELECT CONVERT(TIME,STARTTIME,108) - CONVERT(TIME,ENDTIME,108) FROM BATCH_MASTER

but it gives following error message

[color=red]Operand data type time is invalid for subtract operator.[/color]

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Generate Sequence Number In Sql???

Mar 15, 2005

Hi,
I have written the following StoredProcedure





Code:

create Procedure spCreateQuestion(
@QuestionName varchar(30)
)

as

declare @newAnswerId int
declare @newQuestionId int

set @QuestionName='New Question'

BEGIN TRANSACTION Q1

--Creates New QuestionId with AnswerId 0
INSERT INTO Questions(QuestionId,Name,AnswerId)
SELECT 1 + COALESCE(MAX(QuestionId), 0),RTRIM(@QuestionName),0
FROM Questions

--QuestionId just now created
SELECT @newQuestionId=QuestionId FROM Questions WHERE Name=@QuestionName

BEGIN TRANSACTION QA1

--Create an AnswerId
INSERT INTO Answers(AnswerId)
SELECT 1 + COALESCE(MAX(AnswerId), 0)
FROM Answers

--AnswerId just now created(I hope not the best way to do like this)
SELECT @newAnswerId=MAX(AnswerId) from Answers --is it the best way to call statement like this or any other way better than this

--update Questions Table with this new Answerid
UPDATE Questions
set
AnswerId=@newAnswerId
where QuestionId=@newQuestionId

COMMIT TRANSACTION QA1
COMMIT TRANSACTION Q1



I think the second Transaction is not locking the table.so some how i should be
able to get the newly create AnswerId

i can't use the identity column in my tables

Can some one please have a look at it and suggest me how do we go about it..

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Mar 20, 2007

helen writes "I have a sql table:
NAME AGE
Anna 10
Susan 5
Dina 12

Please help me to come up with a QUERY STATEMENT with this result:
SEQNO NAME AGE
1 Anna 10
2 Susan 5
3 Dina 12 "

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Generate Sequence Number Basing On Each Id

Mar 28, 2008

Hi all
anbody can help me writing sql code for this. All i need is to generate sequence basing on id_no
Ex: if ID=ABC(twice) in seq_col as abc --1
abc ---2
Tables which I have
Uniques_No ID_NO SEQ
---------------------------------------------
1 ABC
2 ABC
3 ABC
4 BBC
5 BBC


Expected results as below :
------------------

Uniques_No ID_NO SEQ
---------------------------------------------
1 ABC 1
2 ABC 2
3 ABC 3
4 BBC 1
5 BBC 2

Thanks in advance

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Sep 3, 2014

I'm trying to do a simple insert into a table, something like this:

insert into sometable (ID, somecolumn)
select 'Task-ID', somevalue from SomeOtherTable
where something = 'someothervalue'
(or something to that effect)

So, the SELECT would generate something that looks like this:

ID somecolumn
-- ----------
Task-ID somevalue1
Task-ID somevalue2
Task-ID somevalue3
(etc.)

Here's where my problem comes in: ID is a PK, and needs to be unique. What I need it to do is this:

ID somecolumn
-- ----------
Task-ID.1 somevalue1
Task-ID.2 somevalue2
Task-ID.3 somevalue3
(etc.)

What I don't know is, how do I programatically generate the number sequence? Note: I do not have admin rights to the table, i.e. I cannot just change a column to IDENTITY.

Also the 'Task-ID' must remain part of the ID; in other words, I can't just generate a GUID, and it needs to be easily identifiable.

What I'm hoping to do is rewrite my SQL like this:

insert into sometable (ID, somecolumn)
select 'Task-ID.' + (generated seq #), somevalue from SomeOtherTable
where something = 'someothervalue'

Is there an easy way to do this?

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SELECT Field1, Field2 FROM MyTable

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I have a procedure which updates a sequence number in a table such as the one below.


Seq Sequence_Id

------ ------------------
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This is the procedure ...

create procedure DBO.MIG_SYS_NEXTVAL(@sequence varchar(10), @sequence_id int)
as
begin

update mig_sys_sequences
set
@sequence_id = sequence_id = sequence_id + 1
where
seq = 'CSN'

return(@sequence_id)
end


The purpose of this is to generate a sequential number each time the procedure is called. This number would then be used in a number of different tables to allocate a unique id so that the id is unique across the different tables.


1). What is the most efficient way of allocating these unique ids? The tables that I plan to update will already be populated with data.

2). How would I call the above procedure from an UPDATE statement?

Many thanks,

Fred

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can someone pls show me a way to get an unique sequence at below senario:

PC1 & PC2 using their own local client progam to access to Database Server at SERVER1.
In the SERVER1, there is a table SEQUENCE in a database DATABASE1.
And the table's structure of SEQUENCE are SeqType & SeqNo.
Here is the sample data:

SeqType SeqNo
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DeliveryOrder 200

Now, how to prevent PC1 & PC2 to get a same Invoice No. if they request the Invoice No. at the same time?
Is it possible to lock the record Invoice when i perform a SELECT statement, then i update the Invoice to 101, lastly release the lock for Invoice?

pls advise. thanks.

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What I need is for row 8 to have UNS and row 9 to have UNS.1. In other words, any time the VISITNUM is UNS several times in a row, I need to add that ".X" suffix, but if a row has something other than UNS, I need to start over again the next time it's UNS again.

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KitID varchar(20),
SubjID varchar(20),
VISIT varchar(60),
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[code]....

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The tables never make it to the subscribers and replication continues on without error for the existing articles. No agents produce any errors and running the snapshot agent w/ verbose output provides no errors or insight into any possible issues.

I have tried:

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SELECT @@IDENTITY

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