SQL Server

There are a number of problems often encountered when generating SQL Server data tables in a utility PowerDesigner:1. The field names defined in the data are the same when the physical model is generated, an error occurs.2. The primary key between

scenario : Backing up a database on one machine and then restoring the database on another machine may cause error: System.Data.SqlClient.SqlError: The database backup in the backup set differs from the existing ' XXX ' database.Restore Steps :1.

Create proc [dbo].[Messagemgr] @pageSize int, @pageIndex int, @rcount bigintOutput--total number of output query records asbeginDeclare @startRowNum int;Declare @endRowNum int;Set @startRowNum=@pageSize*(@pageIndex - 1)+1;Set

Use LianxiGo--1, Supplier Table gong--(Gcode supplier number--Gname supplier name--Gtel supplier Telephone)CREATE TABLE Gong(Gcode int PRIMARY KEY,Gname varchar (20),Gtel varchar (20),)GoInsert into Gong values (101, ' Zibo business ', ' 0533-123456

If two threads modify the same record in the database at the same time, it causes the latter record to overwrite the previous one, causing some problems.For example:A ticketing system has a number of votes, the client every call to the ticket method,

Background: Backup A SQL Server library today, the native space is not enough; I just want to back up to the shared disk. Record the memo.Environment: sqlserver2008r2_x64The steps are as follows:1. Enable xp_cmdshellIf xp_cmdshell is not enabled,

Executes the slowest SQL statement Select (total_elapsed_time/execution_count)/1000 n ' Average time ms ', total_elapsed_time/1000 N ' Total time spent MS ', Total_ worker_time/1000 n ' Total CPU time MS ', Total_physical_reads N ' physical reads

First look at the function of the waist to achieve:One: Create a database/* Check to see if the database exists, delete this database if it exists */if exists (SELECT * from sysdatabases where name= ' bankdb ') drop database bankdb Go */create a DB

about how PHP connection database, we certainly have different views, some with Wamp, some with xamp, they are integrated environment, convenient operation.Sometimes, however, the database type is different and you want to connect to a different

Today let me back up all the databases on the Internet, jerked a look, hundreds of, the pit dad, had to find on the internet is not easy, did not think that there is really a note down, after use, haha ...Use masterdeclare @DbName varchar DECLARE

The server login name , which is the user who has permission to log on to a server;server Role , a fixed set of server users, the default is 9 groups; Logins must belong to some roles, default to public Server roles are not allowed to

Internal connection is the focus of the query, but also the focus of database learning.The three tables in the Scott database are to be queried:EMP Table:Dept Table:Salgrade table:1, select .... usage of from A, b--emp is 14 rows and 8 columns, Dept

Paging query is very simple, the specific code is as follows:--Paged Query--query 1-3 rows of data Select Top 3 * from emp ORDER by Sal desc;--query 4-6 rows Data Select Top 3 *from empwhere empno not in (select Top 3 empno from emp order BY Sal

1. Overview 2, the connection string of the wording 3. SqlConnection object 4. SqlCommand object 5. SqlDataReader Object 6. DataSet Object 7. Releasing Resources 1. OverviewADO provides a wealth of database operations

Inquire about books in book tables that are larger than the average price of such booksFirst record the class number of the value of 2 into the subquery, the subquery isSelect AVG (Price)From book Bwhere b.id=2The average price for a book with class

A trigger is a special kind of stored procedure that executes automatically when a table Update,insert or DELETE statement is executed, with no parameters and no return value;First, trigger type1. For TriggerTriggered after an action is executed

: How to batch update two joined table data: SQLServer joined table This example describes how to update two joined tables in batches by SQLServer. We will share this with you for your reference. The details are as follows: Method 1: UPDATE a SET

SQL query server hard disk space remaining, SQL query server remaining The key code is as follows: DECLARE @ tb1 Table (drive varchar (20), [MB available space] varchar (20) insert into @ tb1 Exec master. dbo. xp_fixeddrivesselect drive, CAST ([MB

Problems caused by calling external EXE execution programs in SQL Server, sqlserver 1. Enable xp_cmdshell first Open the peripheral application configurator-> Function Peripheral application configurator-> Instance name \ Database Engine \

Write SQL statements for table creation using annotations, and compile SQL statements using annotations I read the think in java chapter tonight and it feels good. I just knocked it down and pasted the code for a further review: We recommend that