创建 SQLite 时出现语法错误 Table Android

Question

我想对两个表使用外键，现在我的代码如下，但出现语法错误。请解决此错误。提前致谢

 @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("CREATE TABLE "+ DB_TABLE+" ("+
                        KEY_TBNAME + " TEXT PRIMARY KEY NOT NULL);"

        );
        db.execSQL("CREATE TABLE " + DB_TABLE_CATE + " (" +
                KEY_DETAIL + " TEXT NOT NULL, " +
                        KEY_AMOUNT + " INTEGER NOT NULL, " +
                        KEY_RESOURCE + " TEXT NOT NULL, " +
                        KEY_DATE + " TEXT NOT NULL, "+
                        KEY_TIME + " TEXT NOT NULL, " +
                       "FOREIGN KEY ("+KEY_TB_CATE+") REFERENCES "+DB_TABLE+" ("+KEY_TBNAME+");");

    }

错误...

java.lang.RuntimeException: Unable to start activity ComponentInfo{app.burhani.quickaccount/app.burhani.quickaccount.HomeActivity}: android.database.sqlite.SQLiteException: near ";": syntax error (code 1): , while compiling: CREATE TABLE tablenamecate (detail TEXT NOT NULL, amount INTEGER NOT NULL, resource TEXT NOT NULL, date TEXT NOT NULL, time TEXT NOT NULL, FOREIGN KEY (tbnameis) REFERENCES tablename (tbname);

Answer 1

这将是真正的查询：

CREATE TABLE DB_TABLE (  KEY_TBNAME  TEXT PRIMARY KEY NOT NULL)

CREATE TABLE  DB_TABLE_CATE  (
                KEY_DETAIL  TEXT NOT NULL,
                        KEY_AMOUNT  INTEGER NOT NULL, 
                        KEY_RESOURCE  TEXT NOT NULL, 
                        KEY_DATE  TEXT NOT NULL, 
                        KEY_TIME  TEXT NOT NULL,
                        KEY_TBNAME TEXT NOT NULL,
                       FOREIGN KEY(KEY_TBNAME) REFERENCES  DB_TABLE(KEY_TBNAME));

你必须定义KEY_TBNAME然后设置外键。我可以在 sqlite 浏览器中运行这个查询，它对我有用

Answer 2

你得到 near ";": syntax error 因为你需要两个右括号，一个用于 FK 列名列表，一个用于 table 列列表：

... REFERENCES  DB_TABLE(KEY_TBNAME));

您还有另一个错误：FK 中的列 KEY_TB_CATE 必须也出现在列列表中。

创建 SQLite 时出现语法错误 Table Android

Syntax error while creating SQLite Table Android

android

mysql

sqlite

android-sqlite