Question

任何人都可以破译这种方法有什么问题吗？日志说有语法错误，但我无法看到它。

以下是代码：

public void onCreate(SQLiteDatabase sqLiteDatabase) {
        String createTable = "CREATE_TABLE " + MOVIES_DB + "("
                + TITLE + " TEXT, "
                + OVERVIEW + " TEXT, "
                + POSTER_PATH + " TEXT, "
                + RELEASE_DATE + " TEXT, "
                + ORIGINAL_TITLE + " TEXT, "
                + ORIGINAL_LANGUAGE + " TEXT, "
                + BACKDROP_PATH + " TEXT, "
                + ID + " INTEGER PRIMARY KEY,  "
                + VOTE_COUNT + " TEXT, "
                + POPULARITY + " TEXT, "
                + VOTE_AVERAGE + " TEXT, "
                + ADULT + " TEXT, "
                + VIDEO + " TEXT, "
                + GENRE_IDS + " TEXT, "
                + HISTORY_USER + " TEXT, "
                + WATCH_LATER + " TEXT, "
                + FAVORITE_FLAG + " INTEGER DEFAULT 0"
                + ")";


        sqLiteDatabase.execSQL(createTable);
    }

它曾经工作过。我添加了FAVORITE_FLAG，现在它还没有运行。我还在INTEGER NOT NULL DEFAULT 0

之后尝试了FAVORITE_FLAG

Answer 1

正如@Juergen D所说，CREATE TABLE占用空间而不是下划线。

查看SQLite的CREATE TABLE Documentation。

顺便说一句;尽量把你的id / PK声明放在首位，因为这是常见的做法（也更合乎逻辑）

SQL Fiddle

SQLite（SQL.js）架构设置：

CREATE TABLE MOVIES_DB(
"ID" INTEGER PRIMARY KEY,  
"TITLE" TEXT, 
"OVERVIEW" TEXT, 
"POSTER_PATH" TEXT, 
"RELEASE_DATE" TEXT, 
"ORIGINAL_TITLE" TEXT, 
"ORIGINAL_LANGUAGE" TEXT, 
"BACKDROP_PATH" TEXT, 
"VOTE_COUNT" TEXT, 
"POPULARITY" TEXT, 
"VOTE_AVERAGE" TEXT, 
"ADULT" TEXT, 
"VIDEO" TEXT, 
"GENRE_IDS" TEXT, 
"HISTORY_USER" TEXT, 
"WATCH_LATER" TEXT, 
"FAVORITE_FLAG" INTEGER DEFAULT 0
);

Insert into MOVIES_DB Values(1,"test","test","test 7",
    "test","test 12","test","test","test","test","test",
    "test","test","test","test","test",2);

查询1 ：

select ID, TITLE, FAVORITE_FLAG from MOVIES_DB

<强> Results ：

| ID | TITLE | FAVORITE_FLAG |
|----|-------|---------------|
|  1 |  test |             2 |

这个SQLite在AndroidStudio中创建语句有什么问题

1 个答案: