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

我发现这个小脚本非常方便地查看已经部署到服务器上的过程的文本:

DECLARE @procedureName NVARCHAR( MAX ), @procedureText NVARCHAR( MAX )

SET @procedureName = 'myproc_Proc1'

SET @procedureText =    (
                            SELECT  OBJECT_DEFINITION( object_id )
                            FROM    sys.procedures 
                            WHERE   Name = @procedureName
                        )

PRINT @procedureText

2008-09-23 16:43:33

其他回答

表/存储过程过滤器是一个半隐藏的特性，非常有用…

在“SQL Server Management Studio对象资源管理器”中，右键单击“表或存储过程”文件夹，选择“筛选器”菜单，然后选择“筛选器设置”，并在“名称包含”行中输入部分名称。

同样地，使用Remove Filter再次查看所有表/存储过程。

2008-09-23 15:49:19

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

表校验和

Select CheckSum_Agg(Binary_CheckSum(*)) From Table With (NOLOCK)

行校验和

Select CheckSum_Agg(Binary_CheckSum(*)) From Table With (NOLOCK) Where Column = Value

2008-09-23 15:56:53

sp_msforeachtable:运行带有'?替换为每个表名。如。

exec sp_msforeachtable "dbcc dbreindex('?')"

您最多可以为每个表发出3个命令

exec sp_msforeachtable
    @Command1 = 'print ''reindexing table ?''',
    @Command2 = 'dbcc dbreindex(''?'')',
    @Command3 = 'select count (*) [?] from ?'

此外,sp_MSforeachdb

2008-09-23 15:10:24

SQL Server 2005:

select * from sys.dm_os_performance_counters

select * from sys.dm_exec_requests

2008-09-23 16:05:02

SQL Server的隐藏特性

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