SQL Server

The argument type of the CAST () function changes to return two different encodings for Chinese:SELECT CAST (' kanji ' as VARBINARY) as [GB2312];-Equivalent to cast (cast (N ' kanji ' as VARCHAR (4)) as VARBINARY)SELECT CAST (N ' kanji ' as

LEN (' T ') =1LEN (' T ') =2Be aware of the decomposition of strings in the database, such as ' ^ ' separating ' X ^ t ', to be aware that the last ' t ' is broken down to ' t 'The following code can be used to complete the

Changes to the SQL Server name1. Use the SELECT @ @ServerName to see the server name of the current database 2. From the Sys.sysservers table, you can see all of the current server name 3. Use sp_dropserver ' servername ' to remove this server name.

Both servers, like the environment, use the same domain account. SERVER03 SQL Server can connect to Server04 through Windows authentication, but Server04 through Windows Authentication Connection SERVER03 times the following error:The target

How I handled 430 million records per day in SQL ServerFirst of all, I am just a programmer, not a professional DBA, the following article is written from a problem solving process, rather than the beginning to give you a correct result, if there is

Size of Lock: Resources Format Description DATABASE Not applicable The database ID is already provided in the resource_database_id column. FILE The file ID

SQL ServerDefault Tracking--IntroductionWhat is the default trace? The default SQL Server predefined trace, which is the most lightweight trace that is turned on by default in SQL Server, consists of 5 trace files (. trc), with a maximum value of

First create a data tableCREATE TABLE [dbo]. [Log_info] ([id] [int] IDENTITY (1,1) not NULL, [INFO] [varchar] () NULL, [ INFO1] [varbinary] () NULL, [Imagecol] [image] NULL, [Binarycol] [binary] (ten) NULL)To insert binary data into a table:INSERT

Take order statistics for example, front-end display histogram (jquery statistics):The table and the main fields are described below; Table name: Orders1. Date Createtime2. Amount Amount3. User UserIDSituation One:According to the Department

Original: How to ignore index hints in SQL ServerHow to ignore index hints in SQL ServerWhen we want a query statement to take advantage of an index, we typically add index hints in the query statement, like thisSELECT from TB with (indexwhere

1, although the IDataReader interface is also implemented, but forMySql.Data.MySqlClient.MySqlDataReader and System.Data.SqlClient.SqlDataReaderThe return result of the GetSchemaTable method is different.The following is the structure of the

CREATE TABLE SQLCREATE TABLE SmsSentLog2014101625 (Phone NVARCHAR (MAX),Messagecontent NVARCHAR (MAX),Messagestatus NVARCHAR (MAX),Messagecount NVARCHAR (MAX),MessageStatus1 NVARCHAR (MAX),Province NVARCHAR (MAX),Guishudi NVARCHAR (MAX),Sendtime

This article describes a method for querying Excel through SQL statements in Mssms.Access to Excel is done primarily through the ACE data source provided by office, using OpenDataSource for access to Excel. That is, execute the following command in

SQL Server 2008 Connection database today error: A connection was successfully established with the servers, but there was a failure during the handshake prior to logon. When you connect to SQL Server 2008, SQL Server does not allow remote

Ps:sql server database Export to SQL script benefits: Small footprint (typically only hundreds of KB), easy to modify, unlimited SQL Server version!1. Right-click the database, select: Tasks-Generate script,2. Click for script Generation,3. Remember

It is dangerous to allow SA users to be remote. The recommended practice is to create a new local user that allows remote connections.1. Enable the TCP/IP protocol.2. Configure the listening port (1433).Net-an Check if the local port is listening,

Summarythe an important task when performing performance optimizations for SQL Server databases is to optimize the IO overhead. By turning on Statistics io, we can understand the IO overhead of statement execution , including physical reads, logical

The first type:Compile and recompile the execution plan.The second type:Sorting and aggregation.The third type:Table JOIN operation.The fourth type:max degree of parallelism.The fifth type:Max worker threads.The sixth type:Cost Threadhold

StatementSELECT * from database a.dbo. Table A, database b.dbo. Table b b WHERE A.field=b.field"DBO" can be omitted asSELECT * from Database A. Table A, database B.. Table b b WHERE A.field=b.fieldSQL Server database:--This is an IP or hostname that

Disk I/O errors monitored by SQL Server, msdb. dbo. suspect_pages, and linux disk I/O The suspect_pages table is located in the msdb database and is introduced in SQL Server 2005. Suspect_pages used to maintain information about suspicious pages The