I have a client talking with server program(using sqlite3 as the storage) which needs to support paging. I am thinking about how to implement that. One approach: 1) user request page 1 a. execute query from sqlite3 b. return the first page range items to client 2) user request page N a. execute query from sqlite3 b. return the ...
Good morning, At the moment I am needing some help from someone more experienced with database issues than me. I need to work with two sets of (String, Int32) pairs. The first one has about 160,000 pairs, and the second one has about 1,620,000 pairs. The question is that every part of this last collection's strings is contained on the f...
I get error near autoincrement syntax. Any help? :) Thanks! create table Person( ID integer not null autoincrement, Name text not null ); create table Department( ID integer not null autoincrement, Name text not null, foreign key(Leader) references Person(ID) ); ...
Hello! Can you advice how to store email MessagePart hierarchy into database (SQLite)? Parts can be of different MIME type (text, image, etc). Also they can be multipart. The only way I see is to store all parts in single MessageParts table with content_bytes field and mime_type field + parent_id for multipart Is it ok? Is there some...
Hi guys, first some background. Here is the SQLite script I created: create table Person( ID integer not null primary key autoincrement, Name text not null ); create table Department( ID integer not null primary key autoincrement, Name text not null, Leader integer not null references Person(ID) ); It generates the following Entity F...
Good afternoon, Is there any way I can build an index for a view in SQLite? Thank you very much. ...
I have a python3 program that I'm making which uses a sqlite database with several tables, I want to create a selector module to allow me to chose which table to pull data from. I have found out that I can't use paramater substitution for a table name as shown bellow, so I'm looking for some alternative methods to accomplish this. c.ex...
Hello there, this is my first post here. I'm asking because I ran out of clues and I was unable to find anything about this specific issue. My question is: In Adobe AIR, is there a way to do a synchronous usleep() equivalent (delay execution of 200ms), alternatively is there a way to specify the SQLite busy timeout somewhere? I have ...
Hi everyone. I've got some old code on a project I'm taking over. One of my first tasks is to reduce the final size of the app binary. Since the contents include a lot of text files (around 10.000 of them), my first thought was to create a database containing them all. I'm not really used to SQLite and Core Data, so I've got basically ...
I use SQLite Persistence Object in my App. It's working well on simulator but when i deploy on the device. Sometime it's work, sometime not. My app often is crashed and i got:"Program received signal: “EXC_BAD_ACCESS”." on Debugger Console. In the Debugger i got: #0 0x3153311c in sqlite3_blob_write #1 0x31501b7c in sqlite3_os_end #2...
Imagine I have 3 rows in a sqlite table. While reading these 3 rows I also want to insert new rows depending on the values in these 3 rows. I do a select on these rows and use sqlite3_step function to get each row. The problem is that sqlite3_step loops through more than 3 times, I think because it also sees the newly inserted rows. S...
I have an SQLite database with the following fields for example: date (yyyymmdd fomrat) total (0.00 format) There is typically 2 months of records in the database. Does anyone know a SQL query to find a weekly average? I could easily just execute: SELECT COUNT(1) as total_records, SUM(total) as total FROM stats_adsense Then just d...
Hi, I my quest to develop a cross platform application I have decided to use C++ with the wxWidgets for the programing language. Now I am facing a dilemma on what local storage solution should I use for a for this application. Any suggestions? Note: I am thinking of using SQLite, but I plan to store images in the DB and I am not sure i...
Hi I am trying to do a simple update to a sqlite database using EGODatabase and although the code runs the update does not occur? NSArray *params = [NSArray arrayWithObjects:@"TEST", nil]; EGODatabase *database = [EGODatabase databaseWithPath:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"db_USBV1.sqlite3"]];...
I am trying to create a select statement that is compatible with all major relational databases (MySQL, PostgreSQL, Derby, SQLite, ...). Here the simple select statement: SELECT * FROM taggings WHERE public IS TRUE The problem is that SQLite for example does not support the boolean data type, so I rewrote my statement to: SELECT * FROM...
I would like to sum over the product of two columns, but I would like to do it in small sections. That is, for every symbol for every date I would like to sum the product of oi and 'contract_settle`. Here's a snippet of my SQLite db: date symbol cont oi contract_settle 20030103 NVLS1C 100 NA 20030103 NVLS1C 03F 19 3...
Good night, I have an SQLite query which I am executing in C# using the ExecuteScalar() command. The result in an Object type variable which is in fact a value of type Int64. As I need to cast it to an Int32, I tried first using Convert.ToInt32 and now I am using (Int32)(Int64)Object, although I get the same performance with both. The q...
Good night, I have a method in which I need to select from an SQLite database a value obtained by querying the database with two strings. The strings are passed to the method and inside the method I make some string concatenation to build SQLiteCommand.CommandText. What surprises me is that even with string concatenation, and despite th...
Lets say I have a table with columns A , B , C , D and I want to do a match on column A and C I see that you can either match a single column or all column in sqlite ie - match column A select * from table where A match 'cat' - match all columns select * from table where table match 'cat' Is it possible to match only columns A and ...
Hello, i allready updated php on my server to version 5.2.14 from webtatic repository (http://repo.webtatic.com/yum/centos/5/x86_64/). But i can't find SQLITE. Can someone help me? ...