php - 错误，在mysql中使用多个WHERE

Question

我在准备好的语句中使用多个 WHERE 子句尝试访问 mysql 数据时出错。这是生成sql异常的代码（参数索引超出范围（2>参数数量，即1）；

"SELECT Arrived_time, Closed_time FROM ? 
WHERE (\"Year  = ?\n) AND (\"Month = ?\n) AND (\"Day = ?)" 

我输入了三个参数。有没有更好的办法？

Answer 1

如前所述，您需要指定表名并使用正确的引用：

"SELECT `Arrived_time`, `Closed_time` FROM TABLENAME
WHERE (`Year`  = ?) AND (`Month` = ?) AND (`Day` = ?)" 

Answer 2

"Year"命名列、"Month"和时缺少右引号"Day"：

"SELECT Arrived_time, Closed_time FROM ? 
WHERE (\"Year\"  = ?\n) AND (\"Month\" = ?\n) AND (\"Day\" = ?)" 

在您的版本中，数据库将寻找一个名为的列"Year = ?\n) AND ("