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

根据单个语句中管道分隔的id字符串返回结果(替代传递xml或首先将分隔的字符串转换为表)

例子:

DECLARE @nvcIDs nvarchar(max)
SET @nvcIDs = '|1|2|3|'

SELECT C.*
FROM tblCompany C
WHERE @nvcIDs LIKE '%|' + CAST(C.CompanyID as nvarchar) + '|%'

2009-05-21 18:17:19

其他回答

dm_db_index_usage_stats

这允许您知道表中的数据最近是否更新过，即使表上没有DateUpdated列。

SELECT OBJECT_NAME(OBJECT_ID) AS DatabaseName, last_user_update,*
FROM sys.dm_db_index_usage_stats
WHERE database_id = DB_ID( 'MyDatabase')
AND OBJECT_ID=OBJECT_ID('MyTable')

代码来自:http://blog.sqlauthority.com/2009/05/09/sql-server-find-last-date-time-updated-for-any-table/

参考资料: SQL Server -表的最后插入行的日期/时间是什么?

在SQL 2005及更高版本中可用

2010-08-30 15:40:59

Use

从information_schema中选择*

列出所有的数据库，基本表，sps，视图等在SQL server。

2010-07-02 09:36:21

我想推荐一个免费的插件SSMS工具包，它有很多功能，如

代码片段

你不再需要自己输入SELECT * FROM。只需输入SSF并按enter(可以自定义为任何其他键)。我更喜欢Tab)。其他有用的代码片段很少

SSC +标签-选择计数(*)从

SST + tab -选择TOP 10 * FROM

S +选项卡-选择

I + tab -插入

U + tab - UPDATE

W + tab - WHERE

OB + tab - ORDER BY

这样的例子不胜枚举。您可以使用SSMS Tools Pack菜单检查和自定义整个列表

执行日志记录

您是否意识到您可以保存几天前编写的临时查询，这样您就不需要再次重新发明轮子了?SSMS Tools包保存您的所有执行历史，您可以根据日期或查询中的任何文本进行搜索。

搜索数据库数据

这个特性可以帮助您搜索字符串在整个数据库中的出现情况，并显示表名和列名以及出现的总数。您可以通过在对象资源管理器中右键单击数据库并选择搜索数据库数据来使用此功能。

SQL格式

将所有关键字设置为大写或小写字母。右键单击查询窗口并选择格式文本。您可以在SSMS工具菜单中设置快捷键。但它缺乏对齐功能。

CRUD SP生成

右键单击一个表，SSMS Tools - > Create CRUD生成插入、更新、删除和选择SP。SP的内容可以使用SSMS Tools菜单定制。

Misc

其他特性很少

以网格模式搜索结果。从结果集，表和数据库生成插入脚本。执行计划分析器。在多个数据库中运行一个脚本。

要了解更多信息，您可以访问他们的功能页面

2011-12-10 15:44:41

我不确定这是否是一个隐藏的功能，但我偶然发现了这个功能，并发现它在很多情况下都很有用。您可以在单个选择语句中连接一组字段，而不是使用游标并遍历选择语句。

例子:

DECLARE @nvcConcatonated nvarchar(max)
SET @nvcConcatonated = ''

SELECT @nvcConcatonated = @nvcConcatonated + C.CompanyName + ', '
FROM tblCompany C
WHERE C.CompanyID IN (1,2,3)

SELECT @nvcConcatonated

结果:

Acme, Microsoft, Apple,

2009-05-21 18:10:32

use db
go 

select o.name 
, (SELECT [definition] AS [text()] 
     FROM sys.all_sql_modules 
     WHERE sys.all_sql_modules.object_id=a.object_id 
     FOR XML PATH(''), TYPE
  )  AS Statement_Text
 , a.object_id
 , o.modify_date 

 FROM sys.all_sql_modules a 
 LEFT JOIN  sys.objects o ON a.object_id=o.object_id 
 ORDER BY  4 desc

--select * from sys.objects

2009-02-12 20:18:12

SQL Server的隐藏特性

推荐文章

最新文章

标签