SQL Server有哪些隐藏特性?

例如,没有文档的系统存储过程,做一些非常有用但没有足够文档的事情的技巧?


答案

感谢大家的精彩回答!

存储过程

sp_msforeachtable: Runs a command with '?' replaced with each table name (v6.5 and up) sp_msforeachdb: Runs a command with '?' replaced with each database name (v7 and up) sp_who2: just like sp_who, but with a lot more info for troubleshooting blocks (v7 and up) sp_helptext: If you want the code of a stored procedure, view & UDF sp_tables: return a list of all tables and views of database in scope. sp_stored_procedures: return a list of all stored procedures xp_sscanf: Reads data from the string into the argument locations specified by each format argument. xp_fixeddrives:: Find the fixed drive with largest free space sp_help: If you want to know the table structure, indexes and constraints of a table. Also views and UDFs. Shortcut is Alt+F1

片段

Returning rows in random order All database User Objects by Last Modified Date Return Date Only Find records which date falls somewhere inside the current week. Find records which date occurred last week. Returns the date for the beginning of the current week. Returns the date for the beginning of last week. See the text of a procedure that has been deployed to a server Drop all connections to the database Table Checksum Row Checksum Drop all the procedures in a database Re-map the login Ids correctly after restore Call Stored Procedures from an INSERT statement Find Procedures By Keyword Drop all the procedures in a database Query the transaction log for a database programmatically.

功能

哈希字节() EncryptByKey 枢轴命令

Misc

Connection String extras TableDiff.exe Triggers for Logon Events (New in Service Pack 2) Boosting performance with persisted-computed-columns (pcc). DEFAULT_SCHEMA setting in sys.database_principles Forced Parameterization Vardecimal Storage Format Figuring out the most popular queries in seconds Scalable Shared Databases Table/Stored Procedure Filter feature in SQL Management Studio Trace flags Number after a GO repeats the batch Security using schemas Encryption using built in encryption functions, views and base tables with triggers


当前回答

找出最流行的查询

与系统。Dm_exec_query_stats,您可以通过一个查询计算出许多查询分析的组合。

链接 用命令

select * from sys.dm_exec_query_stats 
order by execution_count desc

其他回答

以下是一些我认为有用但很多人似乎不知道的功能:

sp_tables

返回可以为的对象列表 在当前环境下查询。 这意味着任何对象都可以出现 在FROM子句中,同义词除外 对象。

Link

sp_stored_procedures

中存储过程的列表 当前环境。

Link

Stored proc sp_MSdependencies以一种比sp_depends更有用的方式告诉您对象依赖关系。对于某些产品版本,可以方便地暂时禁用子表约束,应用更改然后重新启用子表约束。这是查找依赖于父表的对象的好方法。

这段代码禁用了子表约束:

create table #deps
( oType int,
  oObjName sysname,
  oOwner nvarchar(200),
  oSequence int
)

insert into #deps  
exec sp_MSdependencies @tableName, null, 1315327

exec sp_MSforeachtable @command1 = 'ALTER TABLE ? NOCHECK CONSTRAINT ALL',
@whereand = ' and o.name in (select oObjName from #deps where oType = 8)'

应用更改后,可以运行以下代码重新启用约束:

exec sp_MSforeachtable @command1 = 'ALTER TABLE ? WITH CHECK CHECK CONSTRAINT ALL',
@whereand = ' and o.name in (select oObjName from #deps where oType = 8)'

第三个参数是@flags,它控制列出的依赖项类型。请阅读proc内容,了解如何根据自己的目的更改@flags。该过程使用位掩码来破译您想要返回的内容。

可伸缩的共享数据库

通过可伸缩共享数据库,可以在普通机器上挂载相同的物理驱动器,并允许多个SQL Server 2005实例使用同一组数据文件。这种设置不需要为每个SQL Server实例复制存储,并且允许多个SQL Server实例具有额外的处理能力,这些实例具有自己的本地资源,如cpu、内存、tempdb和其他潜在的本地数据库。

Link

不是无证

行号由Itzik Ben-Gan 提供 http://www.sqlmag.com/article/articleid/97675/sql_server_blog_97675.html

设置xact_abort为on 在事务发生错误时回滚所有内容

所有的sp_都很有帮助,只是在网上浏览书籍

我在管理工作室一直使用的快捷键 F6 -结果和查询之间切换 Alt+X或F5-在查询中运行选中的文本,如果没有选中则运行整个窗口 Alt+T和Alt+D -结果在文本或网格分别

这是我今天学到的一个,因为我需要搜索一笔交易。

:: fn_dblog 这允许您查询数据库的事务日志。

USE mydatabase;
SELECT *
FROM ::fn_dblog(NULL, NULL)

http://killspid.blogspot.com/2006/07/using-fndblog.html