Question

Okay, so I’m doing a search in a SQLite database for all entries in the row called Artists… But I don’t want the same artist to appear twice…

-(NSArray *)findAllArtists
{
    NSMutableArray *returnArray = [[[NSMutableArray alloc] init] autorelease];

    NSString *query = @"SELECT * FROM Painting";

    sqlite3_stmt *statement;

    if (sqlite3_prepare_v2(database, [query UTF8String], -1, &statement, nil) 
    == SQLITE_OK) 
    {        
        while (sqlite3_step(statement) == SQLITE_ROW) 
        {
            char *uniqueIdChars = (char *) sqlite3_column_text(statement, 0);
            char *artistChars = (char *) sqlite3_column_text(statement, 1);
            NSString *uniqueId = [[NSString alloc] initWithUTF8String:uniqueIdChars];
            NSString *artist = [[NSString alloc] initWithUTF8String:artistChars];

            PaintingInfo *info = [[PaintingInfo alloc] initWithUniqueId:uniqueId artist:artist];
            [returnArray addObject:info];

            [uniqueId release];
            [artist release];
        }

        sqlite3_finalize(statement);
    }

    sqlite3_close(database);
    return returnArray;    
}

So, what I’m thinking is that one way could be to use a loop inside before adding the result to the returnArray, where I check if it matches a previous result… It sounds fairly simply, but for some reason, I haven’t gotten the loops I’ve tried to work (think I might have been working too long without sleep, so I’m starring blindly at my errors)…
Then again, I’m fairly new to SQLite, so it might be a poor way of going about it…

Any suggestions?

Answer 1

SELECT * FROM Painting GROUP BY Artist had the same effect