用于排序的SQL语句

Question

我想订购一个数据库 - 但它不起作用

是

 ORDER BY <Field> ASC

android的声明？

Answer 1

您无法“订购”数据库。但是，您可以使用适当的查询重载来排序查询结果。

• public Cursor query (String table, String[] columns, String selection, String[] selectionArgs, String groupBy, String having, String orderBy)

  SQLiteDatabase.query | Android Developers

例如：

db.query("someTable", new String[] { "ColumnA", "ColumnB" }, "WHERE ColumnC = ?",
    new String[] { "ColumnC_Condition" }, "ColumnB", null, "ColumnA");

转换为

SELECT ColumnA, ColumnB FROM someTable WHERE ColumnC = "ColumnC_Condition" 
    GROUP BY ColumnB ORDER BY ColumnA