如何从 iPhone SQLite 数据库中获取整数值通常我们使用以下是 varchar 或 string 但我们如何获取 NSInteger 值?
const char *sql = "select * from questions";
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {
while(sqlite3_step(selectstmt) == SQLITE_ROW) {
NSInteger primaryKey = sqlite3_column_int(selectstmt, 0);
DataController *coffeeObj = [[DataController alloc] initWithPrimaryKey:primaryKey];
coffeeObj.restaurantLocation = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)];
coffeeObj.foodQualityRating = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)];
restaurantlocation 和 foodquality rating 或 NSString 我在 Integer 中有调查 id,我们如何从表中获取它。