小编chr*_*ris的帖子

天儿真好!

我有一百万个不同的单词,我想在一个有1500万行的表中查询.同义词和单词的结果将在每次查询后得到处理.

表看起来像这样:

    synonym      word
    ---------------------
    ancient      old
    anile        old
    centenarian  old
    darkened     old
    distant      far
    remote       far
    calm         gentle
    quite        gentle

这就是目前在Java中完成的方式:

....
PreparedStatement stmt;
ResultSet wordList;
ResultSet syns;
...

stmt = conn.prepareStatement("select distinct word from table");
wordList = stmt.executeQuery();

while (wordList.next()) {
    stmt = conn.prepareStatement("select synonym from table where word=?");
    stmt.setString(1, wordList.getString(1));
    syns = stmt.executeQuery();

    process(syns, wordList.getString(1));
}
...

这令人难以置信的缓慢.做这样的事情的最快方法是什么？

干杯,克里斯