SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.

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WPF filling a DataGrid

I'm creating a WPF application with a DataGrid. I'd like some advice on the code I've written: ...
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Terrain height map generator

I wrote a Perl script that implements the algorithm described in this article to generate terrain height maps. The idea is to raise a random hill \$i\$ of size \$r_i\$ centered at point \$(x_i, ...
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Inserting data into an SQLite database

I've execute this code in Android for inserting 100+ rows in SQLite database. My current approach takes more time to initialize the database. ...
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2answers
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SQLite UPDATEs for persons and a subclass

I am using Java with SQLite and I am wondering if I am in the right track onto writing good code i.e. more or less reusable: SQL scheme: ...
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1answer
91 views

Nested SQLite transactions in jQuery

I'm using Cordova with jQuery and jQuery Mobile to develop a hybrid app. In this app I need to save data that I get from a server. The data is a ...
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1answer
87 views

Multiple Choice Guessing Game

I've built an app for members of an organization I'm in--the app shows the picture of a member with four multiple choice buttons, and the user then tries to guess the member's name. Pretty simple, ...
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2answers
61 views

Program to provide CRUD operations for a Boxers(Fighter) table in a database

I have been through a few SQLite tutorials and wrote this code on my own to reinforce the principles. The tutorials I went through varied widely in a few areas so this is what I came up with as a ...
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1answer
26 views

Writing an SQL SELECT statement

I'd like to Select columns from Table 1 with a Row Filter, Select columns from Table 2 and join. This works but it's a bit verbose. I was wondering if there is a cleaner way to write this. ...
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1answer
34 views

Searching for log entries in SQLite that involve a particular IP subnet

This reads a huge database (SQLite) and extract any IP address similar to ip_base: ...
3
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1answer
53 views

Data cleansing and formatting script

This is a script that creates a base dataframe from a sqlite database, adds data to it (also from SQLite), cleanse it and formats it all to an Excel file. I feel like it is incredibly verbose and my ...
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Structured use of Android SQLite transactions

I got tired of following Android-SQLite's transaction idiom, briefly documented here. It requires too much boilerplate code, IMHO, especially when you add the obligatory null checks. So I came up ...
3
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1answer
55 views

Fetching, processing, and storing Mixpanel analytics data to SQLite

I'm a self-taught Python programmer and I never really learned the fundamentals of programming, so I want to see how to improve upon this script and make it adhere to best practices. The script has ...
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1answer
47 views

Downloading, decompressing and inserting data into an SQLite database

I have implemented a Service, which executes three operations, in the following order: Downloading a compressed (.zip) CSV file Decompress the CSV file Reading the CSV file and inserting the data ...
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804 views

Python TKinter data entry window GUI for SQLITE3 table

I would like to offer for review a simple tkinter GUI window in Python 3 to be used for data entry into an SQLite database table. As a noob, this is my first attempt at OOP and my first experience ...
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1answer
43 views

Empty product model

I don't think I am using MVC concept in Ruby on Rails properly. Model accesses db, controller works on logic and view displays information/data. But in my below code, My Model code is empty. Can ...
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2answers
68 views

Transferring a CSV file to a database while merging some columns

Say I am given a csv file that I want to import into an sqlite3 database. The first two columns in the csv file contain unique, important information while the rest of the columns are really a list ...
2
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1answer
293 views

Restore SQLite database backup

I have an application that provides the user the ability to backup the local SQLite database to another location. I then provide the ability to restore the backup database and overwrite the current ...
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2answers
67 views

Binning and calculating a huge range of data

I have a code that I'm fairly certain does what I want. Bear with me as I explain what I'm doing: Imagine that there is 10 houses, where there can be one to an infinite number of persons. Each of ...
4
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1answer
204 views

Is there a better SQLite update / insert pattern than this?

I've got a function which updates an existing record or inserts a new one, but it looks very clunky to me. ...
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1answer
46 views

Optimizing the performance of a nested for loop over millions of messages from SQLite Query - v2

I've posted and gotten help to optimize my code before here and here. Now I have implemented the following changes, after very helpful advice: I have implemented a Dictionary instead of using list ...
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1answer
106 views

Find the highest frequency of messages inside a time slot of 24 hours

I have a very large number (millions) of messages, each labeled with the unixtime it was sent in a SQLite database. Each message has its own userid, for the user that have sent it. I want to know ...
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421 views

Create SQLite backups

I have this script for creating SQLite backups, and I was wondering whether you'd have any suggestions on how to improve this. I was thinking that maybe it should create the backup ...
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3answers
964 views

Inserting persons in file into SQLite

I've just started working with SQLite in C# to test various features of an application. In building my first SQLite example I wanted to insert a large .csv into a table (Person) with two columns, A ...
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1answer
167 views

Flask form validation technique

This is currently the code that I'm using to validate and check for errors in a flask app, where the form fields are coming from a /registration html page: ...
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1answer
133 views

Adding items to a database from a dialog

I have a spinner in my activity that upon selection of one of it's options needs to handle the addition of a new object to my ...
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1answer
62 views

Getting recent stations

I made a database for my Android app using SQLite and it works fine. However, as I understood, SQLite calls shouldn't be made on UI thread. Is the below okay or not? ...
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3answers
281 views

Schema design for user profile

I have the below schema for user profile management: ...
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0answers
399 views

Real-time bitcoin data feed and storage using websocket framework

I'm trying to create data feed script for real time bitcoin data for OkCoin exchange using their websocket API (documentation) and a database manager for storing. There are two channels I am ...
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1answer
331 views

Android “Search” Activity and corresponding XML

Below is an Android Activity and corresponding XML layout. The function of the class is to search an ...
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1answer
597 views

Creating a fast Android dictionary (word counts)

This is a follow-up of my question here: I am currently working on an application for various statistics. One task is to analyse a good amount of sentences for their word counts. The specifications ...
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FizzBuzz in SQLite 2

This query performs a FizzBuzz in SQLite 2.8.17 without creating any tables or sprocs. First attempt: ...
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1answer
167 views

Using SQL to reorder items in a list view - is this efficient?

I'm writing an application for work that requires me to process a list of transactions. The list is small (5 records at the most) and I'm required to display that data in an android ...
7
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1answer
169 views

BananaQuery - Android one-line query

I created this library just for fun. Since I was a bit tired to write 10 lines of code to execute a simple select query in Android, I created a way make it simple. It's not so advanced and some ...
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1answer
560 views

Persistent key value store for Python using SQLite3

This is a module to implement a key value store in Python using SQLite3. Originally written to allow sharing of configuration among multiple threads that are already sharing a SQLite3 database, I have ...
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2answers
571 views

Benchmarking our LAMP servers with this php script

I've written a small script to benchmark our LAMP hosted servers that assess the performance based on three factors: Disk I/O Database I/O (mysql) Database I/O (sqlite) The logic is as follows: ...
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2answers
130 views

Database data insertion

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3
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1answer
200 views

Seeding a file with fake records - doing concurrent updates

I need to seed a database with user data. When trying to write records to a file using sqlite3 with node, I tried writing the logic in a naive manner, without any error checks - but it was failing ...
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3answers
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Using an AsyncTask to populate a ListView in a Fragment From a SQLite table

This is the first time that I have played around with AsyncTask in Android and I wanted to make sure I'm using it correctly. The idea is I'm grabbing all the rows from a table in the database using ...
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931 views

Another way to run reports on a SpiceWorks SQLite database using a linked server in SSMS?

I created a linked server in SSMS so that I could run reports on a SpiceWorks SQLite database. there are a few quirks in the whole system. These simple queries are becoming some of the most ...
3
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1answer
43 views

Finding users with the highest Following vs. Friends ratio

I am trying to find the users who have the highest "Following vs. Friends" ratio in my Twitter timeline. I have a SQLite database of the users in my Twitter timeline and each column contains data ...
7
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2answers
2k views

SQLite Helper Class in C#

Here is a SQLite Helper Class I created. Any input appreciated, including security and simplification. ...
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3answers
649 views

Optimization for SQLite result set parsing

I am retrieving information from an SQLite database that gives me back around 20 million rows that I need to process. This information is then transformed into a dict of lists which I need to use. I ...
2
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1answer
703 views

Unit of Work with Generic Repository Pattern MVVM, vol. 3

Continuation of this question: https://codereview.stackexchange.com/questions/36561/unit-of-work-with-generic-repository-pattern-mvvm-vol-2 I have made some modifications: Implement lazy-loading ...
3
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2answers
173 views

Searching database, filtering results, adding longs

My needs outpace my abilities. This code (mostly) works, but it is really ugly, doesn't always add correctly, and is in desperate need of some help refactoring. I can't wrap my head around what ...
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1answer
799 views

Unit of Work with Generic Repository Pattern MVVM, vol. 2

Continuation of this question: Unit of Work with Generic Repository Pattern MVVM I have made some modifications: Interfaces aren't forced to implement IDisposable Removed the finalizers Rebuilt UoW ...
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1answer
3k views

Unit of Work with Generic Repository Pattern MVVM

I have been writing the application. I meant to implement a repository pattern with Unit of Work. Is it correctly done? Can you make a code review? I use SQLite ...
2
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2answers
636 views

I need code review on using singleton to access local database

As I get to some performance issues in my app and find that I use database access in a bad way. So I decided to move to singleton pattern. I need someone to review this code and confirm me that I made ...
4
votes
1answer
476 views

Converting latitude and longitude coordinates from CSV using web service

I am working on converting a mailing list that has longitude and latitude coordinates within the CSV file. This script I came up with does what I need, but this is my first real-world use of python. I ...
2
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2answers
791 views

Improving SQLITE3 Left Join Performance

I occasional write simple yet long Python scripts using SQLITE3 (I'm not proficient with functional or object oriented programming...yet) Usually my sqlite3 is blazing fast. I'm use to looping ...
5
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1answer
2k views

Android SQLite Database management

I'd like some opinions about my approach at using SQLite databases in android. Everything seems to work very well, but there may be something wrong that I hadn't noticed. I don't like working with ...