SQLite3 (iOS) query not executing - objective-c

Question

I'm having some trouble getting this to work.
This is the code I want to execute:
[self openDB];
sqlite3_stmt *statement;
NSString *sql2 = [NSString stringWithFormat:#"INSERT INTO CheckList (CLName, DateAdd, Active, Costum, Percentage, UserId) VALUES ('ola232332332324', '2012-02-03', 1, 1, NULL, 1)"];
if(sqlite3_prepare_v2(db, [sql2 UTF8String], -1, &statement, NULL) == SQLITE_OK)
{
alert1 = [[UIAlertView alloc]
initWithTitle:#"Grats" message:#"The query was executed!" delegate:self cancelButtonTitle:#"Continue" otherButtonTitles: nil];
[alert1 show];
[alert1 release];
}
else {
NSAssert(0, #"Failed to execute");
}
sqlite3_finalize(statement);
And this is the code I use to call the db:
-(NSString *) filePath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:#"prosegur.sqlite"];
}
-(void) openDB {
sqlite3_open([[self filePath] UTF8String], &db);
if (sqlite3_open([[self filePath] UTF8String], &db) != SQLITE_OK){
NSAssert(0, #"Failed to open db");
}
}
Edit: Trying to use the FMDB, here's the code:
FMDatabase *database = [FMDatabase databaseWithPath:#"prosegur.sqlite"];
if([database open]){
NSLog(#"yes");
[database executeUpdate:#"INSERT INTO CheckList (CLName, DateAdd, Active, Costum, UserId) VALUES ('cenas', '2012-02-0', 1, 1, 1)"];}
else
{
NSLog(#"not");
}
Passes by the [database open] verification, but it doesn't execute the query.
EDIT 2: Already did what it was suggested, i'm starting to think that it creates a database and executes the query inside of it, but since it doesn't exist any table, it ignores that fact.
Here's the updated code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docsPath = [[paths objectAtIndex:0] retain];
NSString *path = [[docsPath stringByAppendingPathComponent:#"prosegur.sqlite"] retain];
FMDatabase *database = [FMDatabase databaseWithPath:path];
[database open];
if([database open])
{
NSLog(#"yes");
[database executeUpdate:#"INSERT INTO CheckList (CLName) VALUES (?)", #"cenas"];
}
else
{
NSLog(#"no");
}
[database close];

Answer 1

Maybe a silly question, but you are aware that sqlite3_prepare_v2 only prepares the statement and does not actually execute it? You also need to call sqlite3_step to actually do the insert,
You could use sqlite3_exec instead, which simply executes a statement without doing the prepare/execute two-step.

Answer 2

I have had a lot of headache while using standart sqlite3 api in iOS development.
Check out FMDB framework. It is very simple to use, and you can find lots of tutorials on the web.
If you do not want that framework, try using NSError for catching an error on query execution.

Answer 3

Sample Example.
+(BOOL)InsertDataInPin:(NSString *)pin
{
NSString *databasePath =Your DatabasePath;
NSString *SQL=#"INSERT INTO pincode Values(?)";
sqlite3_stmt *dataset;
if (sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK ) {
if (sqlite3_prepare_v2(database, [SQL UTF8String], -1, &dataset, NULL) == SQLITE_OK)
{
sqlite3_bind_text(dataset, 1, [pin UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_step(dataset);
}
sqlite3_close(database);
}
}

Answer 4

I found out the answer, if anyone is having troubles like this, check out the following link:
IPhone Development - Failed to use SQLite
Thanks to all of you for the support!