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

以下是我最喜欢的一些东西:

在sp2 -工具/选项/脚本下增加了脚本选项

使用模式的新安全性—创建两个模式:user_access、admin_access。把你的用户过程放在一个，你的管理过程放在另一个，像这样:user_access。showList, admin_access.deleteUser。将模式上的EXECUTE授权给你的应用用户/角色。不再一直授予EXECUTE。

使用内置加密函数、视图(为了表示而解密)和带触发器的基表(在插入/更新时加密)进行加密。

2008-10-20 18:49:30

其他回答

TableDiff.exe

表差异工具允许您发现和协调源表和目标表或视图之间的差异。Tablediff实用程序可以报告模式和数据的差异。tablediff最受欢迎的特性是它可以生成一个脚本，您可以在目标上运行该脚本，以协调表之间的差异。

Link

2008-09-23 16:09:25

/*找到空闲空间最大的固定驱动器，也可以复制文件来估计哪个磁盘最快*/

EXEC master..xp_fixeddrives

/*在使用或引用之前检查文件的假设*/

EXEC master..xp_fileexist 'C:\file_you_want_to_check'

详情请点击这里

2008-09-23 15:09:22

Sql 2000 + DBCC DROPCLEANBUFFERS:清除缓冲区。当缓冲区是干净的时，用于测试查询的速度。

2009-12-18 14:23:58

在sys.database_principles中设置DEFAULT_SCHEMA

SQL Server在名称解析方面提供了极大的灵活性。然而，名称解析是有代价的，并且在不完全限定对象引用的临时工作负载中可能会显着昂贵。SQL Server 2005允许为每个数据库原则(也称为“user”)设置新的DEFEAULT_SCHEMA，这可以在不更改TSQL代码的情况下消除这种开销。

Link

2008-09-29 17:01:31

通过关键字查找过程

哪些过程包含特定的文本(表名、列名、变量名、TODO等)?

SELECT OBJECT_NAME(ID) FROM SysComments 
WHERE Text LIKE '%SearchString%' 
AND OBJECTPROPERTY(id, 'IsProcedure') = 1

2008-10-01 21:26:32

SQL Server的隐藏特性

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