alter column in sql server 2012

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SQL Server deleted column, error. " Because one or more objects access this column, ALTER TABLE DROP column ... Failed

Label:The teammate gave me the statement to modify the data. Always fails to execute. I wonder. For example:Look carefully at this column, and there is nothing special. such as:But it does have a constraint: ' df__his_drug___all_i__04e4bc85 '. Why do we have this constraint???When I finally searched this article, I understood. Because the column ' All_inventory_state ' is assigned a default value when it is

MSSQL Server index ' Uq_f_username ' relies on column ' F_username '. ALTER TABLE ALTER COLUMN F_USERNAME failed because one or more objects access this column

--Requirements change, need to add a foreigner name to the F_username field of the T_login table, the previous set of varchar (10) is not enough, the negotiation decision to change to varchar (30), when executing, the message index ' Uq_f_username ' depends on the column ' F_ UserName '. ALTER TABLE ALTER COLUMN F_USER

SQL Server 2012 autogrow column, value hopping problem

Label:Original: SQL Server 2012 autogrow column, value hopping problem Introduced Starting with the SQL Server 2012 version, when the SQL

SQL Server 2012 Internal principles and Troubleshooting (column)

customizing SQL nexus:http://blog.csdn.net/burgess_liu/article/details/23909625 Solve daily problems: http://blog.csdn.net/burgess_liu/article/details/24307671 13th. Using extended events to diagnose SQL Server 2012 Using extended events to diagnose SQL

SQL Server 2012 row to column

Table_sourcePIVOT (Aggregation Functions ( Value_column )For Pivot_columnIn ()The rollup and transpose of a field is used only once.) TB Pivot (max (copies) for Order_type in ([11],[12],[13],[14])) TB650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/86/C0/wKiom1fJL62BzNw0AAAx3ojxOmk986.png-wh_500x0-wm_3 -wmp_4-s_3900535619.png "title=" qq picture 20160902155111.png "alt=" Wkiom1fjl62bznw0aaax3ojxomk986.png-wh_50 "/>For totals and transpose of multiple fields, it is nested multiple times

SQL Server 2012 autogrow column, value hopping problem

IntroducedStarting with the SQL Server 2012 version, when the SQL Server instance restarts, the values for the autogrow column of the table will jump, and the size of the specific hop value depends on the data type of the growth

SQL Server 2012 Internal principles and Troubleshooting (column)

PROFESSIONAL SQL SERVER? Internals and Troubleshooting a book (downloadable from here), I think the content is very good. I also want to have a more comprehensive understanding of SQL Server 2012, so look at the translation, and the focus of the content published in the blog

An exception occurred while the SQL Server database was offline: ALTER database failed because the lock could not be placed on database ' SMS '. Please try again later. The ALTER DATABASE statement failed. (. Net SqlClient Data Provider)

Location:In Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery (String SqlCommand, executiontypes Executiontype) in Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery (stringcollection Sqlcommands, Executiontypes Executiontype) in Microsoft.SqlServer.Management.Smo.ExecutionManager.ExecuteNonQuery ( StringCollection queries) in Microsoft.SqlServer.Management.Smo.Database.SetOfflineImpl (Boolean offline)===================================

SQL alter column name and table name

CodeAs follows:Exec sp_rename 'table name. [original column name] ', 'new column name', 'column' **************************************** *********************************Transact-SQL reference Sp_renameChange the name of the user-created object (such as a table, column, o

VMware Workstation 11 Build Windows Server 2012 SQL Server 2012 Cluster FAQ

1. The Windows Server 2012 built-in support for iSCSI initiators does not require additional installation, and the iSCSI software Target can be used as a built-in feature under the file and storage services role2, copy the file of the virtual machine to join the domain when the packet SID is duplicated, use the Sysprep tool to reset the system, be sure to check the general options3. When creating a new doma

SQL Server alter statement

When modifying the SQL Server table structure, we often use the alter statement to list some commonly used alter statements as follows. 1: add fields to the table Alter table [Table name] add [column name] Type 2: delete a f

Workaround for SQL Server mirroring configuration that cannot send the ALTER DATABASE command to a remote server instance

Label:Environment: Non-domain environmentBecause it is automatic failover, need to join witness, transaction security mode is, strong security full modeWhen you do the final step, you may encounterExecution (Alter DATABASE [mirrortest] SET WITNESS = ' tcp://xxxx:5022 '-) Error resolution message 1456, Level 16, State 3, line 4th cannot be alter D The atabase command is sent to the remote

SQL Server ALTER statement

When modifying the SQL Server table structure, use the ALTER statement to enumerate some commonly used alter statements as follows.1: Add a field to the tableAlter table [table name] add [column name] Type2: Delete FieldAlter table [table name] Drop

Some commonly used alter statements in SQL Server

I recently studied sqlserver database .. I have not been familiar with it for a long time. I often encounter some alter statements, and I have learned some about it in my spare time. the following example uses the table structure createdatabaseText_DBgouseText_DBgocreatetableTeacher ( I recently studied sqlserver database .. I have not been familiar with it for a long time. I often encounter some alter stat

SQL Server obtains all column names in the temporary table or whether the specified column name exists. SQL Server column names

SQL Server obtains all column names in the temporary table or whether the specified column name exists. SQL Server column names Retrieve all colum

SQL Server 2012/2014 links to various pits in SQL Server 2000

Label:This article summarizes the various pits in SQL Server 2012/2014 that are linked to SQL Server 2000, all of which are problems encountered in practical applications. Someone might say why SQL

SQL Server 2012:SQL Server architecture--The life cycle of a query (part 1th)

Label:Original: SQL Server 2012:SQL Server architecture--The life cycle of a query (part 1th)To reduce the scope of the read operation, this article first looks at a simple select query and then introduces additional procedures related to performing the update operation. Fin

SQL 2012 hints that the column name is invalid but can perform a problem

The author currently uses ctrl+shift+r can solve this problem, because the problem of intelligent perception, need to re-organize IntelliSense. There are other ways, please share a friend, thank you.VS2012 and 13 are both useful for IntelliSense, and in SQL it's useful for IntelliSense and VS, the main function is to enter the schema in query Editior and add "." To the user with permissions. Symbol, you can see the tables, views, and user functions un

WSFC implementation of the SQL Server 2012 High Availability Group (AlwaysOn Group) _win server based on Win2008 R2

: http://technet.microsoft.com/zh-cn/library/cc731739.aspx 12 in the "Confirmation" page, click "Next". 13) Complete the WSFC arbitration configuration. At this point, the WSFC environment for SQL Server AG is complete. install and configure for each node server SQL Server

Microsoft SQL Server 2012 Management (1): Install configuration SQL Server focus

/*Scripte assumes the existence of C:\Drive_D etc, to simulate multipledisk drives.*/ on Primary--NOTICE below Non-uniform SIZE, Maxsize,and FILEGROUP parmerters!(Name=ADVANCEDDBF1_PRIMARYFG, Filename='C:\Drive_D\AdvancedDB_F1_PrimaryFG.MDF', Size=16MB, MaxSize= -, FileGrowth=Ten%), FILEGROUP CURRENTDATAFG (Name=ADVANCEDDBF1_CURRENTDATAFG, Filename='C:\DRIVE_E\ADVANCEDDB_F1_CDFG.NDF', Size=6MB, MaxSize= the, FileGrowth=Ten%), (Name=ADVANCEDDBF2_CURRENTDATAFG, Filename='C:\DRIVE_E\ADVANCEDDB_F2_C

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