Comparing integers in sqlite table? - ios

Question

I have a high scores table in my game. When the game is over, the score is shown on the screen and it gets inserted into the high scores table. I want to know how to compare the new score to the highest score in the table so I can let the user know if they achieved a high score. Below I included the code I use to update and insert the score into the table. The score being kept is an integer, globalScore.
-(void)updateScores:(NSInteger)Primary_key
{
sqlite3_stmt *statement=nil;
NSString *sql=nil;
#try
{
statement=nil;
sql=nil;
sql=[NSString stringWithFormat:#"update tblHard set Score=? where id=%d",Primary_key];
if(sqlite3_prepare_v2(database, [sql UTF8String], -1, &statement, NULL)!=SQLITE_OK)
{
NSAssert1(0, #"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database));
}
sqlite3_bind_int(statement, 1, globalScore);
int success=sqlite3_step(statement);
if (success == SQLITE_ERROR) {
NSAssert1(0, #"Error: failed to insert into the database with message '%s'.", sqlite3_errmsg(database));
}
sqlite3_finalize(statement);
statement=nil;
sql=nil;
}
#catch (NSException *e)
{
NSLog(#"asd");
}
}
-(int)InsertGame
{
int i=0;
sqlite3_stmt *statement=nil;
NSString *sql=nil;
#try
{
statement=nil;
sql=nil;
sql=[NSString stringWithFormat:#"insert into tblHard(Score) values (?)"];
if(sqlite3_prepare_v2(database, [sql UTF8String], -1, &statement, NULL)!=SQLITE_OK)
{
NSAssert1(0, #"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database));
}
sqlite3_bind_int(statement, 1, globalScore);
int success=sqlite3_step(statement);
if (success == SQLITE_ERROR) {
NSAssert1(0, #"Error: failed to insert into the database with message '%s'.", sqlite3_errmsg(database));
}
i= sqlite3_last_insert_rowid(database);
sqlite3_finalize(statement);
statement=nil;
sql=nil;
}
#catch (NSException *e)
{
NSLog(#"asd");
}
return i;
}
So what I'm looking for is something like this...
if(globalScore > "the highest score in the table"){
highscorelabel.hidden=NO;
}

Answer 1

You can retrieve the highest score in the table with
select max(Score) from tblHard
You can retrieve the result of this SQL query with sqlite3_column_int. Here is the code (error checking removed for brevity):
int highestScore;
/* ... */
sqlite3_prepare_v2(database, "select max(Score) from tblHard", -1,
&statement, NULL);
sqlite3_step(statement);
highestScore = sqlite3_column_int(statement, 0);
And then you can compare the current maximum score with globalScore:
if (globalScore > highestScore) {
/* ... */
}