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
--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
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
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
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
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
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
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
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
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
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
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
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
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
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
: 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
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