SQL Server

Modification of the database file name for SQL Server 2005. Not much to say, see Picture:For the database name changes directly select the database to be modified, F2, you know, do not understand can go to the excrement .... 0.0Here to modify the

string filepath = @ "D:\data.xlsx";           string strConn =  "provider= microsoft.ace.oledb.12.0; persist security info=false; "  +  "Data source="  +                            filepath  +  "; extended properties= ' excel 12.0; hdr=yes; imex=2 '

The order of the data cannot be guaranteed because the optimizer may choose to parallel processing or scan the data in a multi-file case without looking in order. The only order by is to ensure the sequence.The process of parallel processing results

In Java development, the MS SQL Server contact is relatively small, this article records some of the basic knowledge of MS SQL Server.1. Add an index to the table field: Create INDEX User_openid on user (col1,col2);Delete indexes: Drop index

--A stored procedure that generates SQL scripts for table dataCREATE PROCEDURE dbo. Uspoutputdata@tablename sysnameAsDECLARE @column varchar (1000)DECLARE @columndata varchar (1000)DECLARE @sql varchar (4000)DECLARE @xtype tinyintdeclare @name

In today's article, I want to talk about the very controversial and complex topic of SQL Server: The ambiguity of the ORDER by clause.View and Order byLet's start with a very simple SELECT statement.1 -- A very simple SELECT statement 2 SELECT *

Data from table structures and tables is supported only from SqlServer2008, andSqlServer2008 The previous database only supports the export table structure, sometimes we may need to export 2008 of the data from the previous database, this time we

The basics of SQL Server indexing are generally understood by understanding the relevant knowledge.Index is to optimize the query efficiency, too many duplicate indexes will affect the data deletion and modification operations. So the use of the

In today's scale OLTP system, it is a good way to solve the problem by replicating multiple copies in order to alleviate the single point of reading and writing pressure in the database, especially the read pressure.The SQL Server transactional

Backup and recovery-related log files in SQL Server database have MDF and LDF files present in \\sqlserver_install_dir\MSSQL\Data\1. Document interpretation. mdf fileMDF is a SQL Server database file.. ldf fileLDF is a log file of SQL and cannot be

The Use mytestgo--nchar type is exactly the same as the char type except that nchar stores characters in Unicode format rather than ANSI format. The--unicode format has a larger character set range than the ANSI format. The ANSI character set has

Cascade Delete.Recently, a contractual relationship has been established, with the addition of a maintenance contract on the original asset platform, and a maintenance contract.Need to add the asset to the maintenance contract, using EF, the added

After using the PD to build the table and then generate the SQL script and then run it in SQL Server after the database is built, it is possible to generate a PD document directly from the contents of the database. After surfing the internet, of

--Using MasterUse masterGo--Determine if database HR existsif exists (select 1 from sysdatabases where name= ' HR ')Begin--delete Database hr if it existsDrop Database HREndGo--Create DATABASE HRCreate DATABASE HRGo--Using Database hrUse HRGo--------

In SQL Server:1. The following query statements can be used to query to system tables (system_table), table aliases (synonym), user tables (user_table), Views (view), primary foreign key names, triggers, stored procedures, and so on, based on the

First, the database three levels:library files, services, management interfacesSecond, about the database of small knowledge:DB: Refers to the file in which the database stores dataDBMS: Database management SystemDBS: Database system, including

At present, a situation encountered in the work, you need to extract a field in SQL Server Pinyin first letter, the field by the Chinese characters, English, digital and "-" composition, Baidu a bunch, find the following method, record, for later

SQL Server 2008R2 configuration management prompts for "Remote procedure call failed" after installing vs2013This is because vs2013 comes with a conflict with Microsoft SQL Server 2012Local db.You can fix the problem by upgrading the SQL Server

1. First, after a user is established, the default schema is dbo, and the default role is public. In this case, the user will not see the dbo and other objects under the schema. Unless authorized separately. 2. Create a new schema test, and then

--move tempdbalter DATABASE tempdb MODIFY FILE (name= ' tempdev ', filename= ' D:\Database\tempdb.mdf '); ALTER database tempdb MODIFY FILE (NAME = ' templog ', filename= ' F:\Logs\templog.ldf ');--move modelalter DATABASE model MODIFY FILE (name= '