android - 如何在 Android 中从周日开始从 Sq-lite 检索仅 1 周的数据？

Question

下面是我的代码:

表创建:

public void onCreate(SQLiteDatabase sqLiteDatabase) {
        final String query = "CREATE TABLE " + Db_Contract.Db_Fieds.TABLE_NAME + " ("
                + Db_Contract.Db_Fieds._ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
                + Db_Contract.Db_Fieds.MONEY + " REAL NOT NULL,"
                + Db_Contract.Db_Fieds.CAT + " TEXT NOT NULL,"
                + Db_Contract.Db_Fieds.DATE + " TIMESTAMP DEFAULT CURRENT_DATE,"
                + Db_Contract.Db_Fieds.TIMESTAMP + " TIMESTAMP DEFAULT CURRENT_TIMESTAMP" + "); ";
        sqLiteDatabase.execSQL(query);
    }

检索 1 周数据的查询:

private Cursor getAllCurrentData()
    {
        String[] selectArg = new String[]{};
        return db.query(Db_Contract.Db_Fieds.TABLE_NAME,
                null ,
                Db_Contract.Db_Fieds.DATE+ "= date('now', 'weekday 0', '-7 days')",
                selectArg,
                null,
                null,
                Db_Contract.Db_Fieds.TIMESTAMP);
    }

问题是我无法使用上述查询检索 1 周。请告诉我我在做什么错误。

提前致谢

Answer 1

Db_Contract.Db_Fieds.DATE+ "= date('now', 'weekday 0', '-7 days')",

检索 DATE 等于 date() 表达式的行。但似乎您想要 DATE 大于或等于表达式的所有行。尝试:

Db_Contract.Db_Fieds.DATE+ ">= date('now', 'weekday 0', '-7 days')",

注意 >= 运算符与 = 运算符。