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

使用EncryptByKey进行简单加密

其他回答

你是否曾经不小心点击了执行按钮,而你实际上想点击: 调试/解析/使用数据库/查询选项卡之间的切换/等?

下面是把按钮移到安全的地方的方法:

工具—>自定义。然后拖动按钮到你想要的地方

你还可以: -添加/删除其他常用/不常用的按钮(甚至适用于菜单栏中的命令,如文件/编辑) -改变按钮的图标图像(见下面的小猪改变按钮图像..lol)

有时没有合适的列来排序,或者您只是想要表上的默认排序顺序,并且希望枚举每一行。为了做到这一点,你可以把“(select 1)”放在“order by”子句中,你就会得到你想要的东西。整洁的,是吗?

select row_number() over (order by (select 1)), * from dbo.Table as t

主. .Spt_values(特别是type='p')对于字符串分割和执行'bin '和时间插值操作非常有用。

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。

HashBytes()返回其输入的MD2、MD4、MD5、SHA或SHA1哈希值。