SQL Server

Take the number of the numbers: first by the number of sorts, then take the firstSELECT * FROM(Select A.billid,a.demandvoltage,count (1) as RecordCount,Row_number () over (PARTITION by billID ORDER by Count (1) DESC) as SNFrom etl_singlecharging20180

I. Development history of the subregion The table-based partitioning feature provides flexibility and better performance for simplifying the creation and maintenance of partitioned tables. Functions that trace back to the logical partition table and

SELECT TOP 30000Total_worker_time/ + as [Total CPU time consumed (ms)], Execution_count[Number of runs], Qs.total_worker_time/Qs.execution_count/ + as [average CPU time consumed (ms)], Last_execution_time as [Last Execution Time], Min_worker_time/

Read Catalogue One: Overview of views II: Classification of views Three: The advantages and effects of the view Four: basic operation and syntax of the view V: Differences in views and tables The view in the database is

Use Uer--the database in which the carton is currently operatingGo--Create a Product category tableCREATE TABLE Commoditysort (SortId int IDENTITY (+) not NULL,--class IDSortname varchar () not NULL--category name)Go--Commodity Information tableUse

Use the sqlcmd command line.1. Shortcut key: Win+r2, input cmd?, determine3. Input command: Sqlcmd-s -I c:\.sqlExample: Sqlcmd-s lgsp_pc-i D:\test.sqlP.s.1: Best used in your script: Use database name (the database in which you want to perform the

The Master:master database stores instance-scoped metadata information, server configuration, and all database information and initialization information in the instance.The Resource:resource database is a hidden, read-only database that stores

1. Defining data types, protocols, and services (sending and receiving services) UseMaster;GOALTER DATABASETarget DatabaseSETEnable_broker;GO--If the above operation is executed for a long time without reaction, there is a suspicion of freezing, try

SELECT Field name = CONVERT (varchar (), a.name), table name = CONVERT (varchar (), d.name), type = CONVERT (varchar (50), b.name), library name = ' Community ',

1 View describes a view is a table that is exported from one or several basic tables (or views). Unlike a base table, it is a virtual table. Only the definition of the view is stored in the database, and there is no data for the view, and the data

--Data DictionarySELECT ( Case whenA.colorder=1 ThenD.nameElse "' End) Table name, A.colorder field ordinal, a.name field name, ( Case when ColumnProperty(A.id,a.name,'isidentity')=1 Then '√'Else "' End) identification, ( Case

Environment Description: One remote server, Windows Server 2003 + SQL Server 2005 (later changed to SQL Server 2008) Fault description: After SQL server2005 is installed in a local notebook and you connect to this remote server through SQL Server

  Use mastergo -- retrieve the deadlock process select spid, blocked, loginame, last_batch, status, CMD, hostname, program_namefrom sysprocesseswhere spid in (select blocked from sysproceswhere ses blocked <> 0) or (blocked <> 0)   Yes. Select

Declare @ ABC varchar (50) set @ abc = '2014, 2008,200 '; declare @ temp varchar (50) Declare @ sign varchar (50) declare @ run bit -- the flag for continuing the loop: Set @ run = 1; while (@ run = 1) beginif (LEN (@ ABC)> 0) -- If the table name

Before setting and using database replication in SQL Server 2000, check whether the following SQL Server servers meet the requirements: 1. Does the MSSQLServer and SQLServerAgent services start and run as domain users (./administrator users can

Suppose I have an array: A (1) = 111, A (2) = 222, A (3) = 333 ......W I want to pass the array into the stored procedure, but sqlserver does not support arrays. Search for Baidu and find a strong method:1. First convert the array into a string

Many developers want to be a database administrator, and many people first position themselves as a DBA. What knowledge and skills do DBAs need to master? The following are some of the thirty questions I have asked about DBAs during my DBA job and

For large databases, backup takes a lot of time and resources. What if I can make the backup run faster?   You can use the following parameters: 1. Back up the database to multiple files (multiple disks) 2. Enable the compression function (2008,

In $ This-> load-> View ('config '); $ Dbhost = $ this-> config-> item ("dbhost ");$ Dbuser = $ this-> config-> item ("dbuser ");$ Dbpass = $ this-> config-> item ("dbpass ");$ MSDB = mssql_connect ($ dbhost, $ dbuser, $ dbpass );Mssql_select_db

In Part1, we mentioned that you can use fn_dblog to view active logs. However, if the logs are backed up, can we still view them? The answer is yes. Use fn_dump_dblog.   Below is my own test: 1. -- insert data to table Insert into