Upvote:2 

//Storage
UIImage *image = ...; //Retrieve image from URL
NSData *imageData = UIImagePNGRepresentation(image);
sqlite3_bind_blob(compiledStatement, 1, [imageData bytes], [imageData length], NULL);

//Retrieval
const void *data = sqlite3_column_blob(compiledStatement, 1);
int length = sqlite3_column_bytes(compiledStatement, 1);
UIImage *retrieved = [UIImage imageWithData:
                          [NSData dataWithBytes:data length:length]];

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