database - 如何修复查询表达式中的此语法错误？

Question

我正在研究标准访问。我写了这段代码：

SELECT *
FROM room
WHERE price < 40 AND
type IN ('Double", "Single")
ORDER BY price;

当我运行它时，它告诉我这条消息

查询表达式中的字符串语法错误 price < 40 AND type IN ('Double", "Single") ORDER BY price;

Answer 1

SQL 中的字符串文字用单引号表示，而不是双引号：

SELECT * FROM room WHERE price < 40 AND type IN ('Double', 'Single') ORDER BY price

Answer 2

您不能混合使用单引号和双引号。另外，type是一个保留字。所以试试：

SELECT *
FROM room
WHERE price < 40 AND [type] IN ("Double", "Single")
ORDER BY price;