Exception while reading an empty table - iphone

Question

Iam trying to read data from a table.
Initially it is empty. If i tried to read at that time it will cause an exception.
My code is given Below
-(NSMutableArray *) selectDataFrom:(NSString *) tableName
{
NSString *qsql = [NSString stringWithFormat:#"SELECT * FROM '%#' ",tableName];
sqlite3_stmt *statement;
if (sqlite3_prepare_v2( dataBase, [qsql UTF8String], -1, &statement, nil) == SQLITE_OK)
{
NSLog(#"INSIDE IF");
while (sqlite3_step(statement) == SQLITE_ROW)
{
NSLog(#"INSIDE WHILE");
// my code
}
}
return allData;
}
The first NSLog("INDISE IF"); is printed.
But the second one is not printing.
Mention some books to learn sqlite3 statements of iPhone [ eg: sqlite_prepare_v2();] not SQL
[ Sorry for my poor English]
THIS IS THE FULL CODE
-(NSMutableArray *) selectDataFrom:(NSString *) tableName
{
allData = [[NSMutableArray alloc] init];
NSString *qsql = [NSString stringWithFormat:#"SELECT * FROM '%#' ",tableName];
sqlite3_stmt *statement;
if (sqlite3_prepare_v2( dataBase, [qsql UTF8String], -1, &statement, nil) == SQLITE_OK)
{
while (sqlite3_step(statement) == SQLITE_ROW)
{
NSLog(#"REACHED 1");
myProgram = [[Programs alloc] init];
char *date = (char *) sqlite3_column_text(statement, 0);
myProgram.nss_Date = [[NSString alloc] initWithUTF8String:date];
char *type = (char *) sqlite3_column_text(statement, 3);
myProgram.nss_Type = [[NSString alloc]initWithUTF8String:type];
[nsma_allDonorsMA addObject:d_OneDonor];
}
}
else {
// NSLog(#"failed to select data");
}
return allData;
}

Answer 1

Try enabled breakpoints on exceptions and run your app in the debugger. It will show you exactly where you are calling objectAtIndex:. (It is not in the above code)

Answer 2

Where is your sqlite3_finalize() ??
You should release sqlite3_stmt structure in your sqlite3_prepare_v2 block, as following.
sqlite3_stmt *sql_stmt;
if (sqlite3_prepare_v2(...) == SQLITE_OK)
{
....
sqlite3_finalize(sql_stmt);
}