Question

我有一个关于员工的表，其中有3列，如下面的代码：

 db.execSQL("CREATE TABLE " + TABLE_NAME + " (" + _ID
                + " INTEGER PRIMARY KEY AUTOINCREMENT, " + DEPT
                + " TEXT NOT NULL," + NAME + " TEXT NOT NULL," + CITY + " TEXT NOT NULL);");

现在我只想向DEPT和CITY（e.i HCM City和Sales部门的员工）展示员工。如何查询才能获得它？

Answer 1

@DienTrinh，你说得对，请注意AND周围的空格。这对你有用。

 Cursor cursor = db.query(TABLE_NAME, 
                          new String [] {_ID, NAME, DEPT, CITY }, 
                          DEPT +"=?" +" AND " + CITY +"=?", 
                          new String[] {"Sales", "HCM" }, 
                          null, null, null);

Answer 2

SELECT * FROM Employees WHERE DEPT='Sales' AND City='HCM'

如何用两个条件查询SQLite数据库？

2 个答案: