插入行jdbc的主键？ [英] Primary key from inserted row jdbc?

问题描述

是否有跨数据库平台方式来获取刚刚插入的记录的主键？

Is there a cross database platform way to get the primary key of the record you have just inserted?

我注意到这个答案说你可以通过调用 SELECT LAST_INSERT_ID（ ）我想你可以调用 SELECT @@ IDENTITY AS'Identity'; 有没有一种常见的方法在jdbc中跨数据库做这个？

I noted that this answer says that you can get it by Calling SELECT LAST_INSERT_ID() and I think that you can call SELECT @@IDENTITY AS 'Identity'; is there a common way to do this accross databases in jdbc?

如果不是，您会如何建议我为可以访问任何SQL Server，MySQL和Oracle的代码实现此功能？

If not how would you suggest I implement this for a piece of code that could access any of SQL Server, MySQL and Oracle?

推荐答案

从我的代码复制：

pInsertOid = connection.prepareStatement(INSERT_OID_SQL, Statement.RETURN_GENERATED_KEYS);

其中pInsertOid是预备声明。

where pInsertOid is a prepared statement.

然后你可以获得密钥：

// fill in the prepared statement and
pInsertOid.executeUpdate();
ResultSet rs = pInsertOid.getGeneratedKeys();
if (rs.next()) {
  int newId = rs.getInt(1);
  oid.setId(newId);
}

希望这能给你一个很好的起点。

Hope this gives you a good starting point.

这篇关于插入行jdbc的主键？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！