ref:http://databases.aspfaq.com/schema-tutorials/schema-how-do-i-list-the-databases-on-my-server.html
--EXEC sp_databases
/*
SELECT name
FROM master..sysdatabases
ORDER BY name
*/
/*
SELECT CATALOG_NAME
FROM INFORMATION_SCHEMA.SCHEMATA
ORDER BY CATALOG_NAME
*/
--EXEC sp_msForEachDB 'PRINT ''?''' --全部打印出来
