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• How to find out if a Java ResultSet obtained is empty?

  - by Bruce

  Class.forName("org.sqlite.JDBC"); Connection conn = DriverManager.getConnection("jdbc:sqlite:userdata.db"); Statement stat = conn.createStatement(); ResultSet rs = stat.executeQuery("SELECT * from table WHERE is_query_processed = 0;"); How can I find out if rs is empty?

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• How turn text links into HTML links at the client side with javascript

  - by xRobot

  In my db I have saved every links in the form: www.example.com or http://www.example.com Is there a way to turn this text links into HTML links at the client side ( e.g. javascript ) with tag and parameter like this ?: <a href="http://www.example.com" rel="nofollow">www.example.com</a>

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• SQLite database verification after nhibernate schema generation

  - by Berryl

  What is the simplest most effective way to verify that your SQLite db is actually out there after using NHib's schema generation tool? Cheers, Verryl

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• Can I separate merged model into source parts?

  - by Yola

  Can I separate merged model into source parts? Need to do it for reason of upgrade to new versions my every or not every source part of db. It must work under 10.5, so i cant use inferredMappingModelForSourceModel.

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• Invoking a PHP script from a mysql trigger

  - by Shyju

  Is there anyway invoke a PHP page / function when a record being inserted in to the mysql db table. We dont have control over the record insertion procedure.Is there some thing called trigger which can call a PHP script back ?

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• Should I put the sqlite3 databases (for an RoR project) in the VCS?

  - by ryanprayogo

  What is the common way of dealing with the development.sqlite3 files with VCS (in particular, git)? If I commit this file to the VCS, will it be merged with another developer's copy? Or should each developer run the db:migrate task each time a new migration file is created?

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• Help getting the following create table function to work with mysql and C#

  - by Matt

  string createTable = "CREATE TABLE IF NOT EXISTS " + m_strDatabase + "_TimeLogs (logName VARCHAR(16), logTime INTEGER, logCountry TEXT, UNIQUE(logName)) TYPE=MyISAM;"; When this runs, no table is created. No errors either. Im using an ODBC connector. the variable passes in the db name, so that the table created would be users_TimeLogs if the database was called users for example. Am I doing something wrong?

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• How can I send null value to clr function?

  - by Amit Cohen

  When I'm trying to create a clr fucntion with nullable paramete (any kind), the function does not created in the DB. Does anyone know how can I do it? thanks.

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• HibernateTemplate alwaysUseNewSession

  - by DD

  Hi, I had a problem where I was using the hibernate template to do most of my DB work but I had a part of the system that directly accessed the session to do batch persisting. I noticed that the hibernate template session was old and would be storing cached values which didnt take into account the objects save with the session directly. What are the drawbacks of using alwaysUseNewSession? This fixes the problem as I always get up-to-date objects. Thanks.

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• When using spring and hibernate, how are sessions/transactions handled?

  - by Blankman

  when using hibernate with spring, can someone explain how the session unit of work and transactions are handled? is the transaction started at the beginning of the page request, and committed at the end? can I have multiple db calls per request, that each have different transaction levels? e.g. some are left as default, while others are read-uncommitted?

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• How do I make a daemon into a stream in PHP

  - by Itay Moav

  I have a daemon (written in C, but I assume it does not really matter) which outputs messages with printf, and can get input and do stuff with this input (again, not really important what, but he sends those messages to a different machine to be saved there in the DB). My question, how can I make this daemon to be a stream in PHP, so I can hook the input/output of, for example, file_put_contents to this stream.

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• ASP.NET javascript close page after timeout?

  - by AliRiza Adiyahsi

  I want show an information page after success db opartions. And after the info I want to close each pages (information page and main page) I wrote this in button oncommand event: //but this code does not work Response.Write("<script language='javascript'>setTimeout('self.close();',3000);</script>"); at the same time, I want to show an information message. And then I want to close all, after three seconds.I hope I could explain :) Thanks.

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• Linear Interpolation. How to implement this algorithm in C ? (Python version is given)

  - by psihodelia

  There exists one very good linear interpolation method. It performs linear interpolation requiring at most one multiply per output sample. I found its description in a third edition of Understanding DSP by Lyons. This method involves a special hold buffer. Given a number of samples to be inserted between any two input samples, it produces output points using linear interpolation. Here, I have rewritten this algorithm using Python: temp1, temp2 = 0, 0 iL = 1.0 / L for i in x: hold = [i-temp1] * L temp1 = i for j in hold: temp2 += j y.append(temp2 *iL) where x contains input samples, L is a number of points to be inserted, y will contain output samples. My question is how to implement such algorithm in ANSI C in a most effective way, e.g. is it possible to avoid the second loop? NOTE: presented Python code is just to understand how this algorithm works. UPDATE: here is an example how it works in Python: x=[] y=[] hold=[] num_points=20 points_inbetween = 2 temp1,temp2=0,0 for i in range(num_points): x.append( sin(i*2.0*pi * 0.1) ) L = points_inbetween iL = 1.0/L for i in x: hold = [i-temp1] * L temp1 = i for j in hold: temp2 += j y.append(temp2 * iL) Let's say x=[.... 10, 20, 30 ....]. Then, if L=1, it will produce [... 10, 15, 20, 25, 30 ...]

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• Can I delay window.open()?

  - by Jisaak

  So here is my basic problem. The user clicks the save button. Use Ajax to save the content via code-behind. THEN open a new window that loads the content from the DB. I just need a way to not open the window until the content has been saved. Right now it immediately opens a new window and the content isn't all saved yet. Any ideas?

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• How do I extract Info associated with any OpenID provider?

  - by Adnan

  OpenID providers like GOogle,Yahoo etc also stroes user info like Name,email etc. Is it possible to retrieve it by using OpenID Selector(http://code.google.com/p/openid-selector/)? If yes then how do I fetch it? is the OpenID URL same every time when a user logs in? if yes ten may I store that handler in DB? I am using PHP.

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• How to sort it!?

  - by user334269

  The following is my DB data, how can I sorting it by sid and prev_sid with php/mysql!? sid prev_sid type 000 197 app_home 197 198 page_teach 198 218 page_teach 199 211 page_step 211 207 link 218 559 page_step 559 199 page_step Result: sid prev_sid type 000 197 app_home 197 198 page_teach 198 218 page_teach 218 559 page_step 559 199 page_step 199 211 page_step 211 207 link 000 197 198 218 559 199 199 211 207

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• how to read the datas from text file stored in the database

  - by Ranjana

  i have a txt file stored in my sql DB, in that .txt file i have certain numbers like 99435 87889 33455 33555 34556 how to get the count of these numbers from the txtfile stored in the database and also to read the file and fetch the number one bye one in a string. using asp.net (C#)

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• How to represent "ALL" in Primary Key -foreign Key relationship.

  - by Rohit

  I have to create a db design to store blacklisted fax numbers. I have created a table and one column of this table is customerID which is a foreign key to table Customer. Now i want to have a faxnumber which is blacklisted for all customers. How should i proceed with this. Should i use Null in this case. Please provide options

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• JPA polymorphic oneToMany

  - by bob

  I couldn't figure out how to cleanly do a tag cloud with JPA where each db entity can have many tags. E.g Post can have 0 or more Tags User can have 0 or more Tags Is there a better way in JPA than having to make all the entities subclass something like Taggable abstract class? Where a a Tag entity would reference many Taggables. thank you

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• MySQL 5.0.22 export dump file not importing - syntax errors

  - by user348033

  Hello, I backed up my db with mysqldump from phpMyAdmin. Using MySQL 5.0.22. Made no changes to database file. Import fails. Found many instances of extra spaces using notepad, but now cannot find any other such extraneous spaces. Error is 1064. Any suggestions on how to import file properly? Thanks.

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• Connecting FLEX 3.0, JAVA WITH MYSQL

  - by Nithi

  How to connect to MYSQL DB from Java, create table, insert data, retrieve it with datatypes. How to make use of the data to/from in Flex application. plz help me out.. i have basic knowledge in sending and receiving messages using BlazeDS. and calling JAVA METHODS USING ...

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• How to read CSV files line by line in VBScript

  - by Shyju

  I am using an ASP page where I have to read a CSV file and insert it into DB table "Employee". I am creating an object of TestReader. How can I write a loop to execute up to the number of rows/records of the CSV file which is being read?

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• Convert a time to specified time zone using C#?

  - by Ravi

  I'm working on an application in C# with .Net 3.5. I have time zone value of the User is stored in DB with this format (-05:00,1), where -5.00 represents EST time zone value and the 1 indicates that this time zone follows daylight saving (if 0 not a daylight saving zone). Now I want to convert any date time value into this timezone value considering the daylight saving value. Any help is appreciated. Thanks

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• Convert date in text format to datetime format in T-SQL

  - by Rob

  I have a client supplied file that is loaded in to our SQL Server database. This file contains text based date values i.e. (05102010) and I need to read them from a db column and convert them to a normal date time value = '2010-05-10 00:00:00.000' as part of a clean-up process. Any guidance would be greatly appreciated.

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• How important is it for me to pool my connections?

  - by Rio Mango

  It has been suggested to me that I rearrange my code to "pool" my ADO connections. On each web page I would open one connection and keep using the same open connection. But someone else told me that was important 10 years ago but is not so important now. If I make, let's say, 5 db calls on a web posting, is it problematic to be using 5 separate connections that I open/close?

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