Question

这看起来像一个非常基本的查询，在我的桌面上工作正常，但在Android上执行时没有排序结果：

SELECT column1, SUM(column2) AS column3 
FROM ftdata WHERE ftdata MATCH 'column1:example'
GROUP BY column1
ORDER BY SUM(column2) DESC
LIMIT 8

我也尝试将它包装在内部表中无济于事：

SELECT * FROM(
SELECT column1, SUM(column2) AS column3 
FROM ftdata WHERE ftdata MATCH 'column1:example'
GROUP BY column1) X
ORDER BY X.column3 DESC
LIMIT 8

这是我用来运行查询的代码，以防它有用：

Cursor c = mDb.rawQuery(sql, null);
if(c != null && c.moveToFirst()) {
    do {
        results.add(c.getString(0));
    }
    while(c.moveToNext());
}
c.close();

我还应该澄清ftdata是用于FTS查询的虚拟表。其定义如下：

CREATE VIRTUAL TABLE ftdata USING fts3(
column1,
column2 int)

Answer 1

尝试使用它：

SELECT column1, SUM(column2) AS my_sum 
FROM ftdata WHERE ftdata MATCH 'column1:example'
GROUP BY column1
ORDER BY my_sum DESC
LIMIT 8

ORDER BY SUM（）无法在Android上运行

1 个答案: