將NSString綁定到sqlite3的sql語句

Question

你們能告訴我如何將一個nsstring綁定到sqlite3的sql語句嗎？

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

％的字符串 ％d q不工作適用於一個NSInteger

感謝您的幫助。

Answer 1

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