摘要：
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/6e20fa7a-c0a9-496b-89b2-19c6bd996ffc/how-to-collapse-object-explorer-tree-in-management-studi 阅读全文
摘要：
https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/database-console-commands DBCC CHECKIDENT (Transact-SQL) https://docs.microsoft.c 阅读全文
摘要：
http://vyaskn.tripod.com/differences_between_set_and_select.htm https://stackoverflow.com/questions/3945361/set-versus-select-when-assigning-variables 阅读全文