SQLite3 COUNT incorrect - iphone

Question

Say i've got a table called Incidents, and a table called Devices.
Each device has a CI-code.
I want to create a tableView, with in the sections the names of the devices (CI), and each row to represent an incident.
To get the correct number of rows under each section, I use the following code:
NSMutableArray *lijstDevices = [[NSMutableArray alloc] init];
const char *dbpath = [appDelegate.databasePath UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &contactDB) == SQLITE_OK)
{
NSString *querySQL = [NSString stringWithFormat:#"SELECT DISTINCT CI FROM Devices"];
const char *query_stmt = [querySQL UTF8String];
if (sqlite3_prepare_v2(contactDB, query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
while (sqlite3_step(statement) == SQLITE_ROW)
{
// NSLog(#"SQLite ROW for filling in cell");
NSString *addDev = [[NSString alloc] initWithUTF8String:(const char *)sqlite3_column_text(statement, 0)];
[lijstDevices addObject:addDev];
}
sqlite3_finalize(statement);
}
NSString *ciNaam = [lijstDevices objectAtIndex:section];
NSString *querySQL2 = [NSString stringWithFormat:#"SELECT COUNT(ID) FROM Incidents WHERE CI='%#'", ciNaam];
const char *query_stmt2 = [querySQL2 UTF8String];
if (sqlite3_prepare_v2(contactDB, query_stmt2, -1, &statement, NULL) == SQLITE_OK)
{
//NSLog(#"SQLite ok in rowforindexpath");
if(sqlite3_step(statement) == SQLITE_ROW) {
// NSLog(#"SQLite ROW for filling in cell");
teller = sqlite3_column_int(statement, 0);
}
else
{
NSLog(#"Not.. good...");
}
sqlite3_finalize(statement);
}
sqlite3_close(contactDB);
}
Here comes the problem: The sections are filled correctly. Some sections need 1 row, other sections need 2 rows. Whenever I run the program, each section which needs 1 row ends up with 0 rows, while each section with 2 rows needed end up with only 1 row.
Besides that, I had an error before which didn't clean the tables. Therefore, if I ran it twice, the database got doubled up on rows. In that case, each one which needed 1, has 2 rows. Each one which needed 2, had 4 rows. This is obviously not the case anymore but it might help understanding what's wrong.
Anyone having any idea???

Answer 1

u see this example and check it
-(void)ChekInDataBase{
sqlite3 *database;
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK)
{
NSString *sqlStatement = [NSString stringWithFormat:#"SELECT count(id) as countRow FROM password"];
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, [sqlStatement cStringUsingEncoding:NSUTF8StringEncoding], -1, &compiledStatement, NULL) == SQLITE_OK)
{
NSLog(#"%#",sqlStatement);
if (sqlite3_step(compiledStatement) == SQLITE_ROW)
{
countRow = [[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement,0 )]intValue] ;
}
}
sqlite3_finalize(compiledStatement);
if (countRow > 0)
{
[yesBtnPressed setImage:[UIImage imageNamed:#"yes_tab_over.png"]forState:UIControlStateNormal];
[noBtnPressed setImage:[UIImage imageNamed:#"no_tab.png"]forState:UIControlStateNormal];
[noBtnPressed setUserInteractionEnabled:TRUE];
[yesBtnPressed setUserInteractionEnabled:FALSE];
}
else
{
[yesBtnPressed setImage:[UIImage imageNamed:#"yes_tab.png"]forState:UIControlStateNormal];
[noBtnPressed setImage:[UIImage imageNamed:#"no_tab_over.png"]forState:UIControlStateNormal];
[noBtnPressed setUserInteractionEnabled:FALSE];
[yesBtnPressed setUserInteractionEnabled:TRUE];
}
sqlite3_close(database);
}
}

Answer 2

There was no error in this line. Apparently, the CI-code didn't get added in the table correctly. Sometimes it shows the CI-code correct (the ones I can see in the list), but the others just have (null) or 1 as code.