无法从结果集中的元数据中获取表名

Question

运行执行某些sql语句后，我从结果集中获取了一些元数据。我想从元数据中获取表名。我正在使用

Metadata.getTableName(1);

但它什么也没有回归;那是什么意思？另请注意，我能够成功地从元数据中获取列名，而不是表名。

Answer 1

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

来自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.