Question

这是我的代码：

private static final String CREATE_VISIT_TABLE =
    " create table " + VISIT_TABLE +
    " (tripdayid integer REFERENCES TripDay(_id)," +
    " poiid integer REFERENCES POI(_id)," +
    " arrival_time text not null," +
    " start_time text not null," +
    " visiting_duration text not null," +
    " leaving_time text not null,"
    " PRIMARY KEY (tripdayid, poiid));";

...但它在行尾返回错误：

“令牌上的语法错误”“PRIMARY KEY（tripdayid，poiid））;”“，删除此令牌”

Answer 1

我猜测语法错误不是来自SQLite，而是来自编译器，你错过了+：

" leaving_time text not null," // Missing + right here.
" PRIMARY KEY (tripdayid, poiid));";

您的编译器会看到如下内容：

"..." "..."

并且不知道该怎么办，错误消息中的双引号：

"Syntax error on token "" PRIMARY KEY (tripdayid, poiid));""
                        ^                                 ^
                        |------ these ones ---------------|

是赠品。

此外，PRIMARY KEY语法为allowed in SQLite。

多主键的sqlite命令？

1 个答案: