SQL Server的隐藏特性

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

这不是一个隐藏的功能，而是在管理工作室的工具\选项\键盘下设置键映射: Alt+F1默认为sp_help“选定的文本”，但我不能没有添加Ctrl+F1为sp_helptext“选定的文本”

2008-09-23 23:17:05

其他回答

仅限返回日期

Select Cast(Floor(Cast(Getdate() As Float))As Datetime)

Select DateAdd(Day, 0, DateDiff(Day, 0, Getdate()))

2008-09-23 15:54:23

SQL Server Management Studio键盘快捷键…这将使日常工作的结果越来越快。http://sqlserver-qa.net/blogs/tools/archive/2007/04/25/management-studio-shortcut-keys.aspx

2011-03-24 08:32:43

因为我是程序员，而不是DBA，所以我最喜欢的隐藏特性是SMO库。从数据库/表/列的创建和删除，到脚本编写，再到备份和恢复，在SQL Server中几乎任何事情都可以自动化。如果你能在SQL Server Management Studio中完成它，你也可以在SMO中自动化它。

2008-10-24 16:36:34

在SQL Server 2005/2008中显示SELECT查询结果中的行号:

SELECT ( ROW_NUMBER() OVER (ORDER BY OrderId) ) AS RowNumber,
        GrandTotal, CustomerId, PurchaseDate
FROM Orders

ORDER BY是一个强制性条款。OVER()子句告诉SQL引擎对指定列(在本例中为OrderId)上的数据进行排序，并根据排序结果分配数字。

2009-02-10 15:22:30

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

2008-09-29 17:03:14

SQL Server的隐藏特性

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