Re: login problem - Database Discussion Boards

Brady Kelly19-May-09 4:20

19-May-09 4:20

I'm having a slight brain fart today, but maybe somebody can help me. I need to get a tariff, given an effective date in a tariff table, as follows:

create table tariff
( 
	tariffid int identity,
	tariffdate smalldatetime,
	tariff int
)

The best I can come up with is

select max(tariffid) from tariff where '20090501' > tariffdate

where '20090501' is the date I want to find the tariff for, but my query doesn't work in this case because '20090501' is less than my first effective date.

You really gotta try harder to keep up with everyone that's not on the short bus with you.
- John Simmons / outlaw programmer.

Re: Query based on Effective Date

David Mujica19-May-09 4:44

David Mujica

19-May-09 4:44

So if '20090501' is less than the first effective tarrif date, then there is no tarrif to be charged. Right? For example,Does this mean that on January 1, 2010 there will be a tarrif ?

I'm not sure what the problem is. Confused | :confused:

Maybe you could list some sample data.

BTW: I've used effective dating logic for payroll where we had to determine what the pay rate was for an employee and we found that to make the algorithm simpler we always had a very large date as the final entry so that our query would always work.

For example, a new employee is hired on Jan 1, 2009 with a payrate of $10/hr

The effective payrate records looked something like this:
EffectiveFromDate 20090101
EffectiveToDate 29991231
Rate 10.00

Maybe that will help you with your algorithm. Wink | ;)

Re: Query based on Effective Date

Brady Kelly19-May-09 5:00

Brady Kelly

19-May-09 5:00

David Mujica wrote:

So if '20090501' is less than the first effective tarrif date, then there is no tarrif to be charged. Right?

That is actually right. Like I said, I was having a dull moment, where I was thinking records earlier than the 1st tariff should default to the 1st tariff. I'll raise an error if the user tries to insert without a tariff.

On Jan 1 2010, the effective tariff will be the last tariff in the table. I only have one date to work with, e.g.

tariffid  tariffdate            tariff
1	  2009-05-02 00:00:00	100
2	  2009-05-04 00:00:00	150
3	  2009-05-05 00:00:00	70
4	  2009-05-10 00:00:00	90

You really gotta try harder to keep up with everyone that's not on the short bus with you.
- John Simmons / outlaw programmer.

Re: Query based on Effective Date

Luc Pattyn19-May-09 5:12

Luc Pattyn

19-May-09 5:12

you are disrupting the markets. We need more stability, not less. Dead | X|

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Jondo24shoots19-May-09 3:16

Jondo24shoots

19-May-09 3:16

please can anyone help with out??

I'm trying to login to a window based application
developed with VB.NET and after entering
my username and password on the login page,
i saw the following error message after waiting
for some time;

A connection was successfully established with the server,
but then an error occured during the pre-login handshake.
(Provider:TCP provider, error 0 - The specified network
name is no longer available) Source: .NET sqlclient Data Provider

someone help me out
Frown | :(

Jondo

Re: login problem

Mycroft Holmes19-May-09 14:37

Mycroft Holmes

19-May-09 14:37

I suspect someone moved your server or changed the IP. Unless you are using express/lite/local version in which case the local DB may not have been deployed with the app.

What version of SQL Server are you using. Is the developer of the VB app available to annoy?

Never underestimate the power of human stupidity
RAH

Re: login problem

Jondo24shoots19-May-09 22:13

Jondo24shoots

19-May-09 22:13

i'm using SQL SERVER 2005 enterprise edition

and no has moved de server

and besides other computers that
are connected to the server are
all working apart from this particular
one.

Re: login problem

Mycroft Holmes19-May-09 23:20

Mycroft Holmes

19-May-09 23:20

so take that computer out and ....

Sorry couldn't resist. I have never run across a "pre login handshake" error before but I guess it may be a network issues, especially as it is isolated. May be some config on that PC.

Never underestimate the power of human stupidity
RAH

How do i insert and retrive images in a sql server database 2000 or 2005???

ma.amer18-May-09 21:33

ma.amer

18-May-09 21:33

hi every one ,,,
How do i insert and retrive images in a sql server database 2000 or 2005???
thanks in advance.

Re: How do i insert and retrive images in a sql server database 2000 or 2005???

Giorgi Dalakishvili18-May-09 23:12

Giorgi Dalakishvili

18-May-09 23:12

Here you are: How To Read and Write BLOB Data by Using ADO.NET with Visual C# .NET[^]

Giorgi Dalakishvili

#region signature
My Articles

Asynchronous Registry Notification Using Strongly-typed WMI Classes in .NET [^]

My blog
#endregion

couldnot find installable ISAM

hrishiS18-May-09 19:45

hrishiS

18-May-09 19:45

Hi ,
I am using VB.NET2005 with Ms Access database(c:\aa\aa.mdb). But i have upgraded the ms office to 2007 now.
Now when I access the database without password works fine.Bit if I give a password...it shows the error, something like
"couldn't find installable ISAM"
My connection string is

"microsoft.ACE.OLEDB.12.0;Data Source=c:\aa\db1.mdb;jet OLEDB;Database Password=abc;"

Could anyone please show me a way to solve the problem.

thanks in advance

-----------------------------
I am a beginner

Re: couldnot find installable ISAM

Vimalsoft(Pty) Ltd18-May-09 22:19

Vimalsoft(Pty) Ltd

18-May-09 22:19

This is because your Connection Sting is not correctly done.

I once had the Problem and i found help and shared it in this Forum, please google before you post there are plenty of solution to this problem.

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

SQLExpress 2008 Issue ?

Mohammad Dayyan18-May-09 8:23

Mohammad Dayyan

18-May-09 8:23

Hi.

I've created this program[^] some days ago. (I've had WinXP and SQLExpress 2008 then)
It works on XP well , but when I wanna run it on Vista SP1 Ultimate this error[^] occurred.
and there is a link in the error window http://oca.microsoft.com/en/dcp20.asp[^]

What's wrong ?
Could you guide me ?
Thanks

PS : I've installed SQLExpress 2008 on Vista

FFDPERL - Flat file database for perl

wickedxter18-May-09 7:52

wickedxter

18-May-09 7:52

I dont know if there are any perl programmers here, but im looking for some testers in my creation of my project. It an flat file style database that uses SQL queries to access data thats stored. If you would like to help drop by. http://ffdperl.sourceforge.net

Column Constraints

jonhbt18-May-09 2:28

jonhbt

18-May-09 2:28

How can I check if a column has a constraint on it through SQL code please?

Thanks for your help

Re: Column Constraints

Manas Bhardwaj18-May-09 5:37

Manas Bhardwaj

18-May-09 5:37

http://forums.devshed.com/ms-sql-development-95/how-to-get-all-the-constraints-on-a-table-372351.html[^]

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Pls...I can't understand what s the problem in this procedure..

PeriyasamyRamachandran18-May-09 1:40

PeriyasamyRamachandran

18-May-09 1:40

Hi Everyone,

I used the below stored procedure to delete a single record in a table in MySql.

Procedure:

DELIMITER $$
DROP PROCEDURE IF EXISTS `healthtour`.`USP_User_DeleteUserRole`$$
CREATE DEFINER=`root`@`localhost` PROCEDURE `USP_User_DeleteUserRole`
(
IN UserRoleID INT
)
BEGIN
DELETE FROM HT_UserRole WHERE UserRoleID = UserRoleID;

END$$
DELIMITER ;

Problem:

I run this procedure as below,

CALL USP_User_DeleteUserRole(2);

I have the records in my table for the UserRoleID 10. And i don't have the records for the UserRoleID 2. If I give the input(UserRoleID 2) then the record 10 is deleted. It should not be deleted. Because i gave the input 2 and not 10.

Please can anybody help me?.

Thanks,
-Periyasamy Ramachandiran

Re: Pls...I can't understand what s the problem in this procedure..

scottgp18-May-09 3:04

scottgp

18-May-09 3:04

It looks like you need to read up on what to do when a parameter name is the same as the name of a column in one of the tables (which obviously sounds dangerous). For example, http://stackoverflow.com/questions/715229/mysql-stored-procedures-parameter-with-the-same-name-as-affectings-column-is-i[^]
Scott

Re: Pls...I can't understand what s the problem in this procedure..

PeriyasamyRamachandran18-May-09 3:11

PeriyasamyRamachandran

18-May-09 3:11

Hi,

Yes I found the error that i have used the same name for both table column name and the variable name. Just i changed the variable name. Now it works fine.

Thank u very much.
-Periyasamy Ramachandiran.

how to get database performance

tai-fun18-May-09 0:42

tai-fun

18-May-09 0:42

hi,

i can some speak english. so i hope you understand me.

my question;

how to i measuring to database performance? are there tools for database performance?

best regards.

Traversing Column rows

jonhbt17-May-09 21:26

jonhbt

17-May-09 21:26

Hi,

I am Writing an sql that returns a single record which is row from a table. In the same sql i would like to traverse through the columns of this row. How can I do that? Is it possible to access the columns in SQL through indexing for example like column[1]?

Thanks for your time and help

Re: Traversing Column rows

Mycroft Holmes17-May-09 21:43

Mycroft Holmes

17-May-09 21:43

You cannot refer to a column by it's ordinal (1) in SQL unless you use dynamic SQL in which case you look up the column name from the schema view and build a string to execute.

Never underestimate the power of human stupidity
RAH

Re: Traversing Column rows

jonhbt17-May-09 21:52

jonhbt

17-May-09 21:52

thanks for your reply. I am using Dynamic Sql but the problem is that I don't know the name of the column to fetch for, thats why I was trying to find a way similar to indexing.Is there a way?

Re: Traversing Column rows

Mycroft Holmes17-May-09 22:00

Mycroft Holmes

17-May-09 22:00

Take a look into the information schema views (under system views in Management Studio) INFORMATION_SCHEMA.COLUMNS is the one you want

Never underestimate the power of human stupidity
RAH

Exception handling in mysql stored procedures

Rajeshwary17-May-09 19:15

Rajeshwary

17-May-09 19:15

Hi All,

I am new in MySQL Database. Can anybody give sample stored procedure for Insert Query with "Exception handling".

Please...

Thanks,
Easton.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.