sqlite

Cursor while loop returning every value but the last

Hello, I am using a while loop to iterate through a cursor and then outputing the longitude and latitude values of every point within the database. For some reason it is not returning the last (or first depending on if I use Cursor.MoveToLast) set of longitude and latitude values in the cursor. Here is my code: public void loadTrack...

Why does this Rails named scope return empty (uninitialized?) objects?

In a Rails app, I have a model, Machine, that contains the following named scope: named_scope :needs_updates, lambda { { :select => self.column_names.collect{|c| "\"machines\".\"#{c}\""}.join(','), :group => self.column_names.collect{|c| "\"machines\".\"#{c}\""}.join(','), :joins => 'LEFT JOIN "machine_updates" ON "machine_upd...

iPhone SQLite connection in domain object - close each time?

I have what I would consider a small sized iPhone app that uses SQLite. There is a singleton domain object which gets data from a SQLite database. Is it better to create and open the SQLite connection for each request, or to open the DB once and hold on to it for the duration of the app. The app's reason for being is the domain object...

sqlite3.OperationalError: database is locked - non-threaded application

Hi, I have a Python application which throws the standard sqlite3.OperationalError: database is locked error. I have looked around the internet and could not find any solution which worked (please note that there is no multiprocesses/threading going on, and as you can see I have tried raising the timeout parameter). The sqlite file is...

Which DB? Linq to SQL classes

Hi. I want to develop a multiuser supporting accounting management application in C#. I want to use Linq To SQL classes. LINQ to SQL only supports SQL Server/Compact. However is it possible the SQLite people have written their own LINQ provider given the name of the assembly. I have to use DBMS that is FREE. Which DBMS do you suggest...

Encrypt/Decrypt SQLite-database and use it "on the fly"

Here's the thing: In my Qt4.6-Project, I use a SQLite-Database. This database shouldn't be unencrypted on my harddrive. So I want, that on every start of my program, the user gets asked to enter a password to decrypt the database. Of course the database never should appear "in clear" (not encrypted) on my harddrive. So is there any possi...

sqlite on iphone can open db but not prepare statements

I'm brand new to using sqlite so I may have missed something basic. I've created a database and copied it into my app's document's directory. I'm able to open it but when I make a call to sqlite3_prepare_v2 I receive SQLITE_ERROR, "SQL error or missing database". here's my code: sqlite3 *database; if(sqlite3_open([dbPath UTF8String], ...

How to Convert using of SQLite to Simple SQL command in C#

I want to get start with DayPilot control I do not use SQLite and this control documented based on SQLite. I want to use SQL instead of SQLite so if you can, please do this for me. main site with samples http://www.daypilot.org/calendar-tutorial.html The database contains a single table with the following structure CREATE TABLE...

SQLite database creation fails, documentation is unclear

When I add this code to my Android 2.1 Java app, it fails: db=SQLiteDatabase.openOrCreateDatabase("Locations", null); Do I need a special permission to create a database, or can anybody provide a suggestion how to find out what goes wrong? Here is the LogCat output: 04-04 15:04:28.702: DEBUG/ddm-heap(703): Got feature list request 0...

Gotchas INSERTing into SQLite on Android?

Hi friends, I'm trying to set up a simple SQLite database in Android, handling the schema via a subclass of SQLiteOpenHelper. However, when I query my tables, the columns I think I've inserted are never present. Namely, in SQLiteOpenHelper's onCreate(SQLiteDatabase db) method, I use db.execSQL() to run CREATE TABLE commands, then have...

How to view sqlite database by button press

hye all, i have built a SQLite database and wanna to add into iphone app. already i have add it resource->add->x.sqlite and also add libsqlite3.0.dylib.framework but i don't know what is the showing code. I wanna to show the data in the db when user pressed button. Can anyone help me to give an example on how the db can be view when bu...

java.sql.SQLException: database locked

Hello We are using sqlite056.jar in our code. While inserting into database in batch we are getting exception on line when we going to commit. Lines of Code <object of Connection>.commit(); <object of Connection>.setAutoCommit(true); Exception java.sql.SQLException: database locked ...

Reading,Writing, Editing BLOBS through DataTables and DataRows

Consider this piece of code: DataSet ds = new DataSet(); SQLiteDataAdapter Da = new SQLiteDataAdapter(Command); Da.Fill(ds); DataTable dt = ds.Tables[0]; bool PositionExists; if (dt.Rows.Count > 0) { PositionExists = true; } else { PositionExists...

SQlite: Column format for unix timestamp; Integer types

Original problem: What is the right column format for a unix timestamp? The net is full of confusion: some posts claim SQLite has no unsigned types - either whatsoever, or with exception of the 64bit int type (but there are (counter-)examples that invoke UNSIGNED INTEGER). The data types page mentions it only in a bigint example. It als...

Which tools are available to reverse engineer a sqlite database?

I would like to obtain the diagram design of a sqlite DB by reverse engineering it, so I can avoid the study of the schema by myself and have an approximate idea of what I am dealing with quite quickly. Do you know of some tool that has this feature? EDIT: I was already using SQLite Database Browser but I really need the DB diagram a...

Exporting a SQLite database to an XML file in Android

I know this is possible but I'm not really sure where to start. Has anyone been able to achieve this? Thanks. ...

Inserting nil Values into Sqlite Database?

I am working on an iPhone App where I am pulling data from an XML file and inserting it into a sqlite database located in the App. I am able to successfully do this process, but it appears that if I try to sqlite3_bind_text with a NSString that has a value of "nil", the App quickly dies. This is an example of code that fails: (modified...

Why is PHP5 SQLite PDO silently failing on DB connection?

I have no idea why my code is failing silently. PDO and PDO SQLite are confirmed loaded. Errors are turned on and OTHER errors display. The SQLite file exists. Perms are set correctly. If I change the filename, PHP actually DOES create the file but still fails silently. No output or commands are excecuted after the "$dbh = new PDO(...

What kind of structure should I use to keep prospectus of a medicine?

My project is similar to: Users search the name of a medicine from a table. Then touch the medicine he/she looked for . Then prospectus of that medicine will appear on the view... How should I keep prospectus of medicine?(prospectus of a medicine consists of several lines of text) SQLite or NSDictionary thing... I thought that NSDiction...

Simple Android Database Query problem

Hi everyone, I'm new to StackOverflow but so far I love this site. I'm writing an Android application for RC cars. It uses an SQLite Database, and saves the model of the car (carname) as well as other variables. I want to be able to display only the records that have a certain model of car named in the carname column. So far I can only...