帶多主鍵的sqlite命令？

Question

這是我的代碼：

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));"; 

...但它返回一個錯誤，在一行的末尾：

"Syntax error on token "" PRIMARY KEY (tripdayid, poiid));"", delete this token"

Answer 1

我猜，語法錯誤不是從未來的SQLite但是從你的編譯器，你錯過了一個+：

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

你的編譯器看到的是這樣的：

"..." "..." 

，不知道該怎麼辦了，錯誤消息的雙引號：

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

是白送。

另外，該主鍵語法是allowed in SQLite。