how to update millions of records in sql server

1. Final Solution about "cannot get exclusive access to the database because the database is in use"Key SQL statements:ALTER DATABASE [datebase] SET OFFLINE with ROLLBACK IMMEDIATERun out and thenALTER DATABASE [dbname] set onlinePS. Resolve this issue by making the database ' offline '2. When restoring a database, the error message is: cannot overwrite Xx/xx.mdfClick on the top left corner of the selection page, select the ' file ' option and rename

Today I want to use Ruby on Rails to do a small project, need to use the MySQL database, the project's data has been, but is stored in SQL Server, with rails can operate SQL Server, but the total feeling does not match, want to convert to use, the internet turned down, There are many ways to convert, through ODBC, thro

There is a forum to see a post, " Consult the query out of the continuous date record method", screenshot as follows: Insus.net tries to write a program and test it to get the expected results, which can be referenced and learned by SQL code. Copy Code code as follows: --Create a temporary table that will store records for consecutive dates CREATE TABLE #temp (IDD VARCHAR (), Sdate DA

A while ago the manager asked me if I could record the time that the user last logged into our business database because someone had modified the login password for the database SA user before, so we need to record it. I checked the data, as if I could not record who logged in to the business library, can only record who logged on to SQL Server Database version is SQL2005, operating system: WINDOWS7 Here

. Table name)Select * from local table -- Update local tableUpdate BSet B. Column A = a. ColumnFrom openrowset ('sqlodb', 'SQL Server name'; 'username'; 'Password', database name. dbo. Table Name) as a inner join local Table BOn a. column1 = B. column1 -- Create a connection for openquery usage -- First create a connection to create a linked serverExec sp_addrole

Tag: POS Select order Sum Index View DESC nbsp typeSelect A.name as table name, Max (b.rows) as record number from sysobjects a, sysindexes bwhere a.id=b.id and a.xtype= ' u 'GROUP BY A.nameORDER by Max (b.rows) descSelect SUM (number of record bars) as Total records from (Select top 10000 a.name as table name, Max (b.rows) as record number from sysobjects a, sysindexes bwhere a.id=b.id and a.xtype= ' u 'GROUP BY A.nameORDER by Max (b.rows) desc) T1SQ

(); to SDA. Fill (DT); + returnDT; - } the //Execute SQL * Public voidExecuteNonQuery (stringsql) $ { Panax NotoginsengComm.commandtext =SQL; - Comm. ExecuteNonQuery (); the } + //Batch Update A Public voidUpdate (DataTable DT,stringtablename) the { + using(SqlBulkCo

Let's take a look at how you can use it to delete duplicate records in a table: Copy Code code as follows: If Exists (Select * FROM Tempdb.Information_Schema.Tables Where table_name like ' #Temp% ') Drop Table #temp Create Table #temp ([Id] int, [Name] varchar, [age] int, [SEX] bit default 1) Go Insert into #temp ([Id], [Name], [age], [Sex]) Values (1, ' James ', 25,default) Insert into #temp ([Id], [Name], [age], [Sex]) Values (1, '

advanced usage of update (self-described as advanced): Update Table 1 Set Table 1.score= table 2.score From table 1, Table 2 Where table 1.task_line_id= table 2.task_line_id Table 2 here can be a query view, the old iron is not feel very advanced, so no matter how many score in Table 2, can be updated to table 1 Here is also affixed to my project in the source code: UP