Exporting Sqlite table data to csv file programatically [duplicate] - ios

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Closed 10 years ago.
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Exporting Sqlite table data to csv file programatically - xcode iOS 5 (for an ipad app)
I am developing a simple app. I am using sqlite to save data into a table (locally, in app documents folder). I want to problematically export this table data in a csv file and email it to a person. I mean I want to physically access the csv file after conversion in iPad.... Can anybody give an example application to download? Or the code?
Please help

Answer 1

This should give you a good idea. Assuming a table with 2 rows, this code reads all the values in the table and writes them to and NSString, which is then written to a CSV file in the documents directory. Let me know if you need clarification on how to make this code work with your specific project.
NSString *csv = [[NSString alloc] init];
sqlite3 *database;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *sqLiteDb
= [documentsDirectory stringByAppendingPathComponent:#"INSERT_DATABASE_NAME.sqlite3"];
if(sqlite3_open([sqLiteDb UTF8String], &database) == SQLITE_OK) {
const char *sqlStatement = [[NSString stringWithFormat:#"SELECT * FROM myTable"] UTF8String];
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) {
while(sqlite3_step(compiledStatement) == SQLITE_ROW) {
//this assumes that there are two rows in your database you want to get data from
[csv stringByAppendingFormat:#"%#,%#\n", [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)], [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]];
}
sqlite3_finalize(compiledStatement);
sqlite3_close(database);
}else{
NSLog(#"database error");
}
}
NSError *error = nil;
[csv writeToFile:[documentsDirectory stringByAppendingPathComponent:#"myFile.csv"]
atomically:YES encoding:NSUTF8StringEncoding error:&error];
[csv release];