derby sql插入

Question

我尝试在数据库中插入值，这是我尝试执行的语句：

insert into leverancier (id,naam,straat,nr,postcode,plaats,telefoon) 
    values (1,"stef","bosstraat",88,9240,"Zele",null);

我得到以下错误：

ERROR 42X04: Column 'stef' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE  statement then 'stef' is not a column in the target table.

有什么问题吗？

Answer 1

要插入字符串，比如"stef"，不要使用双引号，而要使用单引号：'stef'。下面是语句应该是什么样子的：

INSERT INTO leverancier 
  (id, naam, straat, nr, postcode, plaats, telefoon) 
VALUES 
  (1,'stef', 'bosstraat', 88, 9240, 'Zele', NULL);

出现Column 'stef' is either not in any table ...的错误是因为表名和列名使用了双引号。因此，在读取"stef"时，解析器假定您引用的是一个名为stef的列。