无法从结果集中的元数据中获取表名

Question

运行一些sql语句后，我从结果集中获得了一些元数据。 我想从元数据中获取表名。 我在用

Metadata.getTableName(1);

但是它什么也没有返回。 这意味着什么？ 还要注意，我能够从元数据中成功获取列名，而不仅仅是表名。

Answer 1

您必须使用DatabaseMetaData md = connection.getMetaData（）;

从javadoc which retrieves a DatabaseMetaData object that contains metadata about the database to which this Connection object represents a connection. The metadata includes information about the database's tables, its supported SQL grammar, its stored procedures, the capabilities of this connection, and so on. which retrieves a DatabaseMetaData object that contains metadata about the database to which this Connection object represents a connection. The metadata includes information about the database's tables, its supported SQL grammar, its stored procedures, the capabilities of this connection, and so on.