将NSString绑定到sqlite3 sql语句

Question

你们能告诉我如何将nsstring绑定到sqlite3 sql语句吗？

NSString *date = @"test date";
char const *sqlStatement = sqlite3_mprintf("UPDATE facts SET alreadyRead = '%q' WHERE id=%d", date, factId);

％q不适用于字符串 ％d适用于nsinteger

感谢您的帮助。

Answer 1

NSString *date = @"test date";
char const *sqlStatement = sqlite3_mprintf("UPDATE facts SET alreadyRead = '%q' WHERE id=%d", [date UTF8String], factId);