Encrypted Columns And Searches (partial And Full)
Dec 22, 2005
Hi,
For those implementing encrypted columns, what is the recommended approach when allowing users to also do partial searches on encrypted data? (ie email or creditcard info where the tables contain millions of rows). I understand one cannot have the encryption without performance impact, but the searches can be 10 to 20 times as long as when the info is stored in normal char(20) columns. Just looking as a way to try and lessen the impact.
Thanks
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Jul 20, 2005
Hi All,I have the following scenario. I have a table called Invoice. Thishas around 30 columns of which i have to do a retrieval based onfilter conditions on 10 columns. These filters need to be partialsearches i.e. for e.g the Customer name could be 'Arun', 'Parthiv','Aaron', now i should be able to search the customer as 'ar' and itshould return 'Arun' and 'Parthiv'. My concern is there are 10 columnson which this like '%x%' search has to be done and there willpractically be hudreds of thousands of rows. can anybody suggest me toimprove the performance of such a query. Currently what i am thinkinof isselect Id, Memo, .. FROM Invoice where CustomerName like '%' + @Name +'%' and etc.P.S. am using ASP.Net as the front end.
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Jan 23, 2006
I need to start encrypting several fields in a database and have been doing some testing with a test database first. I've run into problems when attempting to restore the database on either the same server (but different database) or to a separate server.
First, here's how i created the symmetric key and encrypted data in the original database:
create master key
encryption by password = 'testAppleA3';
create certificate test
with subject = 'test certificate',
EXPIRY_DATE = '1/1/2010';
create symmetric key sk_Test
with algorithm = triple_des
encryption by certificate test;
open symmetric key sk_Test decryption by certificate test;
insert into employees values (101,'Jane Doe',encryptbykey(key_guid('sk_Test'),'$200000'));
insert into employees values(102,'Bob Jones',encryptbykey(key_guid('sk_Test'),'$500000'));
select * from employees
--delete from employees
select id,name,cast(decryptbykey(salary) as varchar(10)) as salary from employees
close all symmetric keys
Next I backup up this test database and restore it to a new database on a different server (same issue if restore to different database but on same server).
Then if i attempt to open the key in the new database and decrypt:
open symmetric key sk_Test decryption by certificate test;
I get the error: An error occurred during decryption.
Ok, well not unexpected, so reading the forums, i try doing the below first in the new database:
ALTER MASTER KEY ADD ENCRYPTION BY SERVICE MASTER KEY
Then I try opening the key again and get the error again:
An error occurred during decryption.
So then it occurs to me, maybe i need to drop and recreate it so i do
drop symmetric key sk_test
then
create symmetric key sk_Test
with algorithm = triple_des
encryption by certificate test;
and then try to open it.
Same error!
So then i decide, let's drop everything, the master key, the certificate and then symmetric key:
drop symmetric key sk_test
drop certificate test
drop master key
Then recreate the master key:
create master key
encryption by password = 'testAppleA3';
Restore the certificate from a backup i had made to a file:
CREATE CERTIFICATE test
FROM FILE = 'c:storedcertsencryptiontestcert'
Recreate the symmetric key again:
create symmetric key sk_Test
with algorithm = triple_des
encryption by certificate test;
And now open the key only to get the error:
Cannot decrypt or encrypt using the specified certificate, either because it has no private key or because the password provided for the private key is incorrect.
So what am I doing wrong here? In this scenario I would appear to have lost all access to decrypt the data in the database despite restoring from a backup which restored the symmetric key and certificate and i obviously know the password for the master key.
I also tried running the command
ALTER MASTER KEY ADD ENCRYPTION BY SERVICE MASTER KEY
again but this does not resolve the issue.
Thx.
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Feb 21, 2004
BASIC QUESTION here:
Can you do JOINS with tables in a catalog?
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Jul 4, 2006
Hiya,
I have recently become responsible for a small database for a volunteer soccer league. I am reasonably savvy when it comes to development, but I have not had a lot of experience with administration before.
I need to do what I think must be pretty simple: set up full text indexing so I can use a CONTAINS search on a table. The table contains all of the fields the kids use, and each field has a number of divisions that typically play on that field; we use these 'favored divisions' to make scheduling a little easier. Now, one day when I have time, I will set up a proper, normalized, one-to-many relationship between the favored divisions and the playing fields, but right now it's basically like this:
fieldID (int, primary key, identity seed)
fieldName (varchar), e.g. High School Field
favored_divisions (varchar) - comma-delimited list of divisions, e.g. G10,B14,G12
I imagine it's probably database sacrilege to have a comma-delimited list like that, but we don't have the resources now to re-write that piece of the web application. My question is, in SQL Server 2005, what do I need to do to be able to do a full-text search on this field with the following query:
SELECT fieldID, fieldName
FROM playing_fields
WHERE CONTAINS(favored_divisions,'G10')
Right now the query runs and does not return an error, but does not return any results, either. IIRC, full-text indexing is enabled by default in SQL Server 2005, but I am not familiar with the procedure -- something about having to populate a catalog. Do I need to edit or set up a new index on the actual playing_fields table? What has to happen to make this work?
Thanks very much,
Sam
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Feb 9, 2005
i want to be able to do full text searches on a table that i have that already has data in it.. i created a new catalog, then started incremenetal population.. but nothing happened? will it only catalog the new data thats been entered into the table after i start incremental update? so since i have data in teh table already, would i need to do a full population first before i start incremenetal population?
thanks!
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May 25, 2007
That's right. My developers want full-text searching implemented on an encrypted XML datatype...on SQL Server Express, no less.
Whether this can be done seems to boil down to four questions:
1) Can the XML datatype be encrypted?
2) Can the XML datatype be full-text indexed?
3) Can encrypted data be full-text indexed?
4) Can encrypted XML data be full-text indexed?
So I'm diving into the documentation now, but if anybody out there already knows whether the answer to any of these questions is "No", please save me some time.
Oh, and they also want to substitute potato nuggets for fries, and biggie-size the whole thing.
e4 d5 xd5 Nf6
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Apr 26, 2007
I read a previous post that Raul responded to on the format of the data prefixing Symmetric key encrypted columns, is it possible to reproduce these from a client? Given I know the key name, i can pull back the first 16 for the GUID, for now 01000000 will work for the version, the IV can be created or read, but the last 8 bytes were marked as 'header', can I get an explanation on what this is or if it is required?
The purpose is in being able to do SQL Server compatible encryption on the client side, given a shared certificate for the public password. I certainly can do this with a CLR function and use my own encryption, but comparably it is dog slow, the built in SQL functions will encrypt/decrypt 100k rows in about 20 seconds or less on my test box, where as the CLR function takes 5.5 minutes. This performance difference is too huge to ignore.
I would like to be able to generate a SQL Server compatible prefix for a Symmetric keyed column or find a way to improve the CLR function performance of an AES_256 (rijndael) up to something at least remotely close to the built in functions.
Any help would be appreciated.
John Gooding
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Nov 6, 2014
I have idea on SMK, DMK and symmetric and asymmetric keys. I have also idea on TDE. But Is there any way to encrypt all the records of all the columns of a table in a database? actually I need to encrypt the database. Someone .... thinks that when someone will write select query he will get the encrypted records. As per as I am concerned it is not possible. I can encrypt the specific column using symmetric or other keys...
Is there any software or any tool which will provide encrypted records of database?
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Jul 20, 2005
I am new to database programming and was curious how others solve theproblem of storing encrypted in data in db table columns and thensubsequently searching for these records.The particular problem that I am facing is in dealing with (privacy)critical information like credit-card #s and SSNs or business criticalinformation like sales opportunity size or revenue in the database. Therequirement is that this data be stored encrypted (and not in theclear). Just limiting access to tables with this data isn't sufficient.Does any database provide native facilities to store specific columns asencrypted data ? The other option I have is to use something like RC4 toencrypt the data before storing them in the database.However, the subsequent problem is how do I search/sort on these columns? Its not a big deal if I have a few hundred records; I couldpotentially retrieve all the records, decrypt the specific fields andthen do in process searches/sorts. But what happens when I have (say) amillion records - I really don't want to suck in all that data and workon it but instead use the native db search/sort capabilities.Any suggestions and past experiences would be greatly appreciated.much thanks,~s
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Jun 29, 2015
I've a SQL server 2014 running on one of our server. We're in the process of implementing security steps for our databases. I've encrypted a column in one of the table in the database on the server. The issue is when I restore the backup on my local SQL server and run a query to decrypt the column data it gives me null values. On the other end when I decrypt the column data on the main server it works fine. I found a thread on this forum which states to do the following when restoring the encrypted database on different server.
USE [master];
GO
OPEN MASTER KEY DECRYPTION BY PASSWORD = 'StrongPassword';
ALTER MASTER KEY ADD ENCRYPTION BY SERVICE MASTER KEY;
GO
select File_Name
, CONVERT(nvarchar,DECRYPTBYKEY(File_Name))
from [test].[dbo].[Orders_Customer]
I tried doing above still no luck.
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Sep 13, 2005
I needed to do lookup on tables with approx 1 million records (how else do I know if record already exists?).
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Nov 1, 2004
Hello,
I'm looking at using full-text indexing for tables to query. I have some smaller fields (varchar(50) that stores names) that I was contemplating using full-text indexing for. I was just curious if it is worth it?
Basically the data that will be there are one-word names, without any spaces or whatnot.
Brian
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Jun 5, 2014
Are the XML tags searched, as well as, the contents within the tags, when an xml column is included in a full-text index? Or is it only the contents within the tags? Would I need to combine full-text search with XPath/XQuery to get at the actual tags?
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Sep 19, 2007
Hi,
I have tried this code from http://jtkane.spaces.live.com/Blog/cns!1pWDBCiDX1uvH5ATJmNCVLPQ!316.entry for full-text search on multiple tables & columns.
Here's my code:
SELECT * from [tStaffDir] AS e, [tStaffDir_PrevEmp] t,CONTAINSTABLE([tStaffDir], *, @Name) as AwhereA.[KEY] = e.[ID] andt.[ID] = e.[ID]
I have FT the both the tables above and I am able to get results from the [tStaffDir] table but not the [tStaffDir_PrevEmp] table.The [tStaffDir_PrevEmp] table does have a column (which is [ID]) that is indexed, unique and non-Nullable.Please advise what I should do and look out for.
Many Thanks.
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May 17, 2007
Dear all
I was doing research oh how to do some searches on dates that allow a bit of a freedom to the person searching. They should be able to specify the parameters.
For example how would you make a search for all events that happened on a specific day in any year,any month? example : every 18
Or how would you searh for values that happened in a specific month in any year and any day? eg. May
Or how would you search for values that happen in a specific year and any day and month? eg. 2007
Or how would you search for values that happen every 18 May?
I tried few things and can only work out the search for the year bit. The values are saved in the database as DateTime.
Any advice is apreciated.
Sincerely
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May 10, 2008
Hey everybody,
First thank you for all your help thus far. Now I'm stuck again. I've been doing a lot of reading on triggers and logging information into tables but I've been trying to capture how many times someone enters an item into the search box.
So every time somebody types Gumballs into the search box I want to capture it and the name of the person who is currently logged in. Is there away to do this? Maybe this is something that I should be checking in ASP.NET forums?
Thanks in advanced guys!
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May 13, 2006
I have a number of functions that require the input of parameters in order to ultimatly create a report under Reporting Services by making use of a Stored Procedure.
All the functions etc work as does the stored procedure, but it only works if I specify data that I know exists e.g.
DECLARE @return_value int
EXEC @return_value = [dbo].[spWTRalldatareportsummary]
@dt_src_date = N'04/28/2006',
@chr_div = N'NE',
@vch_portfolio_no = 3,
@vch_prop_cat = N'core'
SELECT 'Return Value' = @return_value
GO
How can I set this so that it will wild card the value. For example rather than having to specify
@chr_div = N'NE', I could specify something like
@chr_div = N *, so it would show both NE and SW values in the result set.
Anybody point me in a direction here. I have tried % but that does not seem to work, I get a
Msg 102, Level 15, State 1, Line 7
Incorrect syntax near '%'.
Thank in Advance
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May 31, 2007
This is what I have:
<asp:TextBox ID="TextBoxProjectCode" runat="server"></asp:TextBox>
<asp:Button ID="ButtonSearch" runat="server" Text="Search" /> <br>
<asp:TextBox ID="TextBoxProjectDate" runat="server" ></asp:TextBox>
<asp:Button ID="ButtonSearch" runat="server" Text="Search" />
SelectCommand="SELECT CLIENT_NAME, CLIENT_CODE, PROJECT_CODE, PROJECT_NAME, PROJECT_DESCRIPTION, EMPLOYEE_ID, ENTRY_DATE, ENTRY_TIME, ENTRY_DESCRIPTION, COMBINED_CODE, TIME_ENTRY_ID, BILLABLE FROM VIEW_TIME WHERE (EMPLOYEE_ID = @SELECT_EMPLOYEE_ID) ORDER BY ENTRY_DATE DESC" FilterExpression="PROJECT_CODE = '{0}' or ENTRY_DATE = '#{0}#' "
<FilterParameters>
<asp:ControlParameter ControlID="TextBoxProjectCode" Name="PROJECT_CODE" PropertyName="Text" Type="Int32" />
<asp:ControlParameter ControlID="TextBoxProjectDate" Name="ENTRY_DATE" PropertyName="Text" Type="DateTime" /></FilterParameters>
Why do I keep getting errors. What am I missing?
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Mar 7, 2005
Hi Everyone. I have created a procedure on sql to obtain information about two tables ( bookinfo and author). The procedure is :
CREATE PROCEDURE FindBookByAuthor
@Aname char
AS
select b.libcode, b.title, b.subject, a.authorname, b.instock
from bookinfo b join authorinfo a
on b.authorid = a.authorid
where a.authorname like '%' + @aname + '%'
GO
I have tested this procedure changing the variable @aname for the surname of the author. This works fine. The problem comes when I execute this procedure from web matrix. I use a textbox to obtain the data for the variable @aname. I send the data. What happens is that when I run the web page and look for a book through the author the select statement behaves differently and gives me a different output.
I would be glad to know why this happens
Thanks
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Jul 5, 2002
Hi, I am looking for an easy and efficiant way to add a boolean search function to an already existing search i have using ASP pages and MSSQL 2000 SPROCS.
Currently I have some code such as:
CREATE PROCEDURE sp_name
@var1 int = NULL,
@var2 varchar(50) = NULL
AS
SELECT blah, blah, blah
FROM sometable INNER JOIN anothertable ON anID = anID
WHERE (table1.column2 = COALESCE(@var1,table1.column2) AND table2.column4 = COALESCE(@var2,table2.column4))
and this works like a charm, if i pass a value into @var1 or @var 2 it gives back results where those crietera match, or if I pass no values in it returns all records.... anyways, you get the idea...
Now I would like to add the ability to introduce a 3rd variable, and have it run a boolean search on a varchar(2500) column. This column is a description field for an image so I would like to be able to search the descriptions by passing in something like 'car OR bike AND travel' and return all the records that have the words 'car' or 'bike' and 'travel' somewhere in the description field.
How can i do this? I am using SQL Server Standard Edition so I don't believe I have full text search functions available, (not sure if that would even help).
Thanks all for your support and guidance!
P.S. i would also like to maintain the functinality so that if all the @var# are blank it still returns all records.
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Apr 27, 2006
Hi,
I am writing a stored procedure to pull records from a table of personal data related to jobs applied for.
There are 3 tables involved, the jobs, the applicants and the applications.
I need to search on job title, job ref from the jobs table and on forename, surname and applicant ID from the applicants table.
There are some quirks here, if the user enters an applicant ID then we can simply scan the jobs table for that id where it also matches the job title wildcards, so that is quite easy to manage.
My own idea for the more complicated searches was to gather the unique ID's from the jobs table into a var, then do similar with the applicants and then search the applications table where both these ID's matched? I think that wouldn't work so well if using the 'WHERE IN()' clause for the main query?
So what approach would be best here to perform the second part of the SP if the client hasn't passed an ApplicantID?
Obviously the applications table has both JobID and ClientID's to relate back to the applicants table.
So can anyone help here, it seems a fairly complicated statement or set of statements would be required here.
Thanks in advance.
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Dec 22, 2006
Here is my requirement:
The script needs to enumerate the the databases in a givin instance of sql server. Then it needs to output the account with permissions on that server. Finally it then needs to search stored procedured for reference to specific file and account names loaded from a csv file. The results should be output to a text file or displayed in an exportable window format.
What I don t understand:
What do they mean by: account with permissions on that server, which account re they talking about
and what do they mean by the SP references a specific file and account name? how can an SP reference a file or account name. i have never seen that?
Thanks for help.
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Nov 3, 2005
For anybody that implemented fuzzy searches in SQL Server or any otherdatabase for that matter. I have implemented edit distance algorithm,specifically q-grams, in SQL Server and wanted to get some opinionsfrom anyone who used a similar algorithm in a DBMS.We are looking to implement fuzzy address search and are employingnumber of different techniques including synonyms for strings like"drive", "dr", "drv", etc... Number expansion, so 6 ave = Six Ave =6th Ave = 6... Now, we also have an implementation of edit distancealgorithm, which would cover misspellings and similar sounding words.One of the challenges is putting various techniques together. Synonymsand number expansion techniques go well together but no edit distance.Also, I am trying to figure out how to leverage edit distanceimplementation for 'contains' searches. So if a string like'Mississippi Municipal Building' would be returned if the Search is for'Misisipi Municipal'.Any thoughts?
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Apr 11, 2007
I have a database containing several tables with many different fields. I need to create an admin section that lets me search on one field or the combination of several. Does anyone have links to pages that offer a general overview for inhouse database search strategy and admin edits.
Thank you
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Jul 13, 2005
I have a form that loads a dataset. This dataset is composed from SQL statements using alias and unions. Basically it takes uses data from 3 tables. This dataset also has a alias column called ClientName that consists of either people's name or business name.In addition, the form also consist of a search field that allows user to enter the 'ClientName' to be searched (i.e. to search the alias column). So, my question is how can the alias column be searched (user can also enter % in the search field)Function QueryByService(ByVal searchClientNameText As String) As System.Data.DataSet
If InStr(Trim(searchClientNameText), "%")>0 Then searchStatement = "WHERE ClientName LIKE '" & searchClientNameText & "'"Else searchStatement = "WHERE ClientName = @searchClientNameText"End If
Dim queryString As String = "SELECT RTrim([People].[Given_Name])"& _"+ ' ' + RTrim([People].[Family_Name]) AS ClientName, [Event].[NumEvents],"& _"[Event].[Event_Ref]"& _"FROM [Event] INNER JOIN [People] ON [Event].[APP_Person_ID] = [People].[APP_Person_ID]"& _searchStatement + " "& _"UNION SELECT [Bus].[Organisation_Name],"& _"[Event].[NumEvents], [Event].[Event_Ref]"& _"FROM [Bus] INNER JOIN [Event] ON [Bus].[APP_Organisation_ID] = [Event].[APP_Organisation_ID] "& _searchStatement
..........End Function
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May 6, 2008
Hi Guys,
I have to work with a poorly designed table :(, that has columns
IDINT,
thisIDvarchar(50) null,
parentIDvarchar(50) null,
Titlevarchar(255) null,
Description varchar(8000) null,
ProductTypevarchar(255) null,
The reason it is poorly designed is the table is used to hold questions and answers, all with a 1:1 relationship. Instead of having ID, ProductType, Question, Answer they have unfortunately adopted the approach of the above i.e:
id 1
thisID 3
parentid nuLL
DESCRIPTION: this is a question
id 20
thisID 3_1
parentID 3
DESCRIPTION: this is the answer to the question above
So I am writing a sproc that does this using a temp table. I got this far:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:Spencer
-- =============================================
ALTER PROCEDURE [dbo].[GetFAQs]
-- Add the parameters for the stored procedure here
@ProductType varchar(255)
AS
BEGIN
SET NOCOUNT ON;
-- Insert statements for procedure here
CREATE TABLE TEMP
(
IDINT,
thisIDvarchar(50) null,
parentIDvarchar(50) null,
Titlevarchar(255) null,
DescriptionQvarchar(8000) null,
DescriptionAvarchar(8000) null,
ProductTypevarchar(255) null,
)
SELECT
ID,
thisID,
parentID,
Title,
DescriptionQ,
DescriptionA,
ProductType
FROM
A2Z
WHERE
ProductType = @ProductType AND parentID IS NULL
END
GO
This gets all my questions for that product type.
What I need to do is load the questions into my temp table and then run through the a2z table again gaining the answers to the questions (the parentid holds the question ID). The answers then will also get loaded into the temp table.
Any bright sparks out there that can help me?
Cheers
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Apr 19, 1999
I'm an SQL novice, but I know this must be a common problem.
I'm trying to select a recordset (using ASP), but I know I only want part of the recordset, and am not sure how to limit it ahead of time.
For example, the query will return about 500 rows, but I know I only want to use a small section of these records.
I want to give the user the ability to navigate through small sections of these 500 rows without having to get all rows all the time.
I know ahead of time which rows to get, but have no idea how to limit the recordset before I get it (there is no fields in the database to help).
This is what I'm doing now. "select * from xyz where id=xxx order by date desc;" I know I only want the first 10, or 10-20, or 400-410.
The way I'm doing it now, I'm getting the whole recordset each time, doing a "rs.move x" where x is where I want to start.
This is really a waste of network traffic and memory since my SQL server is on a different machine as the web server running ASP.
How do I do this?
Please email me if you could at pmt@vantagenet.com
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Sep 26, 2004
Hello - I was wondering if anyone knew how to do this -
I have a database with a field for Id, LName, GName, DOB. In the LName field, some of the names have * placed after the names. Is there a way I can search for the entries in LName with the * in the record?
Thank you!
Liz
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Sep 30, 2007
Hi Guys,
I have started a project using Linq for sql and SSCE. Everything goes well until I realize that SSCE can only run in full trust. Linq for sql is planned to support partial trust scenario. Any plans for such a support in Sql Compact Edition?
Dany
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Apr 12, 2008
The following code accepts a couple of parameters and creates a temp table to hold unpaid schedule rows (like invoices). Then is takes the payment amount passed and starts paying the oldest ones first, until it runs out of money or pays a partial. When it pays it inserts a row in the applieds table with the schedule_ID, Receipt_ID (payment id), applied amount, and applied date.
What I need help with is: Say there is a partial payment from a previous payment, I need to pay that one, but only the unpaid part. Then continue to pay other schedule rows...
I appreciate any help,
@PaymentAmount money,@PledgeID Int,@Receipt_ID IntAS-- Get unpaid reminder rows for the passed in pledge id and put them into the temp tableDeclare @temp_oldest Table(PledgeSchedule_ID int,ReminderDueDate datetime,AmountDue money)INSERT INTO @temp_oldest SELECT PledgeSchedule_ID, PledgeDueDate, AmountDueFROM tblPledgeReminderScheduleWHERE (dbo.tblPledgeReminderSchedule.Pledge_ID=@PledgeID) AND (dbo.tblPledgeReminderSchedule.ReceivedDate IS NULL) -- AND (dbo.tblPledgeReminderSchedule.PledgeDueDate < GETDATE())WHILE((SELECT Count(*) FROM @temp_oldest)>0)BEGIN-- If the payment is greater or equal to the amount due for the current row, do thisIF(@PaymentAmount >= (SELECT Top 1 AmountDue FROM @temp_oldest))BEGIN-- Update the reminder row with todays dateUPDATE tblPledgeReminderSchedule SET ReceivedDate = GETDATE()WHERE PledgeSchedule_ID = (SELECT Top 1 PledgeSchedule_ID FROM @temp_oldest)-- Insert a row to track applied payment and reminder row associatedINSERT INTO tblPledgeReminderSchedule_Applieds (PledgeSchedule_ID,Receipt_ID,Applied_Amount,Applied_Date)(SELECT Top 1 PledgeSchedule_ID,@Receipt_ID,AmountDue,GETDATE() FROM @temp_oldestWHERE PledgeSchedule_ID = (SELECT Top 1 PledgeSchedule_ID FROM @temp_oldest))-- Subtract the amountdue from the paymentamount and reset itSET @PaymentAmount = (@PaymentAmount - (SELECT Top 1 AmountDue FROM @temp_oldest))ENDELSEIF(@PaymentAmount < (SELECT Top 1 AmountDue FROM @temp_oldest))BEGIN -- Insert a row to track applied PARTIAL payment and reminder row associatedINSERT INTO tblPledgeReminderSchedule_Applieds (PledgeSchedule_ID,Receipt_ID,Applied_Amount,Applied_Date)(SELECT Top 1 PledgeSchedule_ID,@Receipt_ID,@PaymentAmount,GETDATE() FROM @temp_oldestWHERE PledgeSchedule_ID = (SELECT Top 1 PledgeSchedule_ID FROM @temp_oldest))BREAKENDELSEIF @PaymentAmount = 0-- Delete all rows from temp tableDELETE FROM @temp_oldestELSE-- Delete only the current row from the temo tableprint @PaymentAmountDELETE FROM @temp_oldest WHERE PledgeSchedule_ID = (SELECT Top 1 PledgeSchedule_ID FROM @temp_oldest)END
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May 6, 2005
I was just wondering if anyone could tell me how to do a search for a partial data match. Say one data field is 123, 234, 345, 456 and another is 111, 222, 333, 444 and another is 555, 666, 777, 888 and I want to search for the unique number 234 but not the whole number 123, 234, 345, 456 ... is there any way to do that or does every search have to be exactly like the data in the field?
Thanks for any help.
Dennis
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Jun 15, 2000
In our database we have the concept of 'Companies' each company has an entry in a tblCompanyControls using a field lCompanyNumber to uniquely identify it.
Company specific data is then grouped within additional tables using this
lCompanyNumber.
Thus all the departments for a particular company (eg 4) exist in a table
tblDepartments with lCompanyNumber =4. The same applies for pensions, pay
elements, employees and so on.
Each employee has various attributes stored in several tables, thus the
main data is stored in tblEmployees with an lCompanyNumber to illustrate
the company they belong to. And a system generated lUniqueID that is the 1
to many relationship to tables such as tblEmployeePayElements,
tblEmployeePensionSchemes.
These in turn have a primary key that establishes a 1 to many with the
period data for pay elements etc.
What we want to do is replicate only the data for a specific company, for
tblEmployees, tblDepartments this looks straightforward as i just set a
filter like 'tblEmployees.lCompanyNumber = 4'. My problem is how do I
replicate just the tblEmployeePayElements for those employees that are in
the specific company as the table does not contain the lCompanyNumber. Can
you replicate a view? I an quite ignorant of replication and would really
appreciate some pointers. Note DRI is not in use.
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