sqlite

Find Maximum Value in a column from sqlite database.

I Am using following code for getting maximum value in column Column no 11 (means 10 no, in the code) Column Name uniqueColumnSNo Data type of Column -integer. I am confused with syntax used by dbhanlder. Here is the code. Just let me know , HOW I WILL ACHIEVE MAXIMUM VALUE TO BE RETURNED from the specified column. Help. Thanks in...

Is SQLite FTS3 still the best way to go for rolling out your full text search?

I need to support full text search for a 10 mb document and wondering if I should implement FTS with CoreData or Sqlite3. I am familiar with CoreData and not too fond of Sqlite3. Anyone with experience care to enlighten me? What other options do i have? Thanks! ...

Oracle equivalent to SQLite's quote() function

Hello! Sometimes I want to generate INSERT statements from the contents of a database table. With SQLite, I can do: SELECT 'INSERT INTO foo (col1, col2) VALUES (' || quote(col1) || ',' || quote(col2) || ');' FROM bar; With Oracle, I have to do : SELECT 'INSERT INTO foo (col1, col2) VALUES (''' || replace(col1, '''', '''''') || ''...

How can I bind the values of the parameter in the SQL statement Uusing Perl?

HI am using SQLite DB and whenever I try to bind the values of parameter into the statement I am getting an error. Here's the piece of code: my $sth = $dbh->prepare("SELECT UserId,UserName,CardNo,GroupId,Role,VerifyType FROM UsersList limit ?,? "); $sth->bind_param(1, undef,SQL_VARCHAR); $sth->bind_param(2, undef,SQL_VARCHAR); $st...

Using SQLite with std::iostream

Does someone know a wrapper which would allow SQLite to load its data from an std::iostream? To be more explicit: std::fstream dataStream("database.sqlite"); ... sqlite3_open(...something using dataStream...); I want to use streams because of their modularity: being able to load a file while it is still being downloaded from the netw...

iPhone, sqlite3, how do I pass values into a select statement?

This is the code I'm using to select some records from my database. I'm binding two dates into my sql, however, when I get to sqlite3_step I get SQLITE_DONE where I should be getting SQLITE_ROW. It looks like its processing the bindings rather than querying the data. What am I doing wrong ? NSString *startDateRangeString = @"2000-05-01...

[SQLite3] DLL File for windows 7 64bit

Hi guys, I'm porting my Windows XP application (wrote with C#) to Windows 7 application. Now I'm using sqlite3.dll on my XP App (32bit) and I would download sqlite3.dll for 64bit machine. For my purpose I've moved sqlite3.dll on my /bin folder and, obviously, when I try to start my app on windows 7 I receive an error. So, where I downloa...

WCF Application "Unable to find assembly" for SQLite

Note: This is a solved problem, but I just spend 4 hours at this issue, so I wanted to share the solution. When I attempt to access a WCF service, the service never responds, and the event log shows the following: An unhandled exception occurred and the process was terminated. Application ID: DefaultDomain Process ID: ...

Rails find_by_sql database type dependent

So in rails I use sqlite3 for development and mysql for production. Sqlite3 and mysql handle booleans differently ("t" or "f" in sqlite3 and true or false on mysql). Usually it's not a problem when I do a find because I can do this: Comment.find(:all, :conditions => ["viewed = ?", false]) And rails will insert the appropriate value de...

SQL : Group All

I want to do the following pseudo-SQL: SUM( SELECT a FROM tab WHERE b > 0); This syntax doesn't work (at least not in sqlite), so I'm trying to figure out the proper phrasing. SELECT SUM(a) FROM tab WHERE b > 0 GROUP BY (*); % nope SELECT SUM(a) FROM tab WHERE b > 0 GROUP BY (1); % nope Suggestions? ...

How to diagnose reason for slow access to sqlite database?

As I have stated in this question some time ago, I am having performance problems when accessing an sqlite database from Python. To make that clear once more, the identical code runs more than 20 times faster using apsw. I recently installed a different version of Python in parallel and installed a new version of apsw for that. This vers...

iPad best practice to keep backend data model

Hi, I am developing iPad application, A set of forms that user has to fill (roughly 500 text fields). The form fields are displayed in a UITable view. Once user fill the forms he/she can uploaded the data to the server. Until its uploaded, the data should be persist in a temporary location in the local disk. In my application desig...

sql: how to copy from one table into another table

table A's structure is a subset of table B, that means the table A's all the columns are the first columns of table B, but table B has more columns than table A. My question, what's the SQL statment to copy all the rows from table A to table B(the missing columns in table B will be kept empty). ...

sqlite memory mode support persistence to local?

i didn't know what's meaning of memory database,dose sqlite is a memory database? on this mode,is it support persistence data to local file? ...

sql: how to update table values from another table with the same user name?

I have two tables, with a same column named user_name, saying table_a, table_b. I want to, copy from table_b, column_b_1, column_b2, to table_b1, column_a_1, column_a_2, respectively, where the user_name is the same, how to do it in sql statement? ...

Decimal places problem with SQLite

I have a SQLite3 table with a column having format DECIMAL(7,2), but whenever I select rows with values not having a non-zero 2nd decimal place (eg. 3.00 or 3.10), the result always has trailing zero(s) missing (eg. 3 or 3.1). Is there any way that I can apply a formatting function in the SELECT statement so that I get the required 2dp?...

using SQLite with mod_perl

I have been successfully using SQLite as a data store for my web applications, but now I am implementing a web site with mod_perl, and am running into database locking issues. As expected, my entire web application is loaded by the Plack Apache handler (Plack::Handler::Apache2) when the web server is started. Well, the first db query cr...

Error in Firefox when making SQLite calls via Javascript

Hello, I have a site that is fully functioning in Chrome/Safari and heavily relied on SQLite to store/access data. However, when testing in Firefox, it errors on the first call, openDatabase(). This is my fairly standard openDB function: function openDB(){ try { if (!window.openDatabase) { alert('not supported'); } else...

Can you compare text alphabetically in a WHERE clause?

I'm using SQLite, and I need to do the following: SELECT * FROM fruit WHERE name<='banana' This statement should return all entries whose "name" column contains text that comes alphabetically before (or is equal to) the word "banana". So it should return the row with "apple", but not the row with "pear" or "orange". It appears that s...

Using wpf datagrid with ironpython and sqlite3

I am trying to figure out how to make use IronPython (2.6) wpf and sqlite3 (i use the Ironpython.SQLite.dll) I get somewhat stuck in how to use the wpf datagrid. Can anyone help me further in how to code in order to fill the datagrid with the data from the sqlite database thats made here. Below is the code on how far i got... 1st t...