SQL Server：如何查询上次事务日志备份的时间？

我想查询所有数据库（在SQL Server 2008实例中）上次事务日志备份的日期。怎么做？我知道这些信息在某个地方，但我不知道在哪里。

我建议使用此修改后的脚本，以便您可以查看哪个数据库处于完全或大容量日志恢复模式，并且没有任何日志备份

SELECT   d.name,
         MAX(b.backup_finish_date) AS backup_finish_date
FROM     master.sys.sysdatabases d
         LEFT OUTER JOIN msdb..backupset b
         ON       b.database_name = d.name
         AND      b.type          = 'L'
GROUP BY d.name
ORDER BY backup_finish_date DESC

SELECT   d.name,
         d.recovery_model_desc,
         MAX(b.backup_finish_date) AS backup_finish_date
FROM     master.sys.databases d
         LEFT OUTER JOIN msdb..backupset b
         ON       b.database_name = d.name
         AND      b.type          = 'L'
GROUP BY d.name, d.recovery_model_desc
ORDER BY backup_finish_date DESC

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查看此语句的输出，我看到backup\u finish\u date为NULL。。。这是什么意思？