SQL Server

1 Create Databasetest;2 Usetest;3 4 --create filegroups, classify files and manage them5 Alter DatabaseTestAddfilegroup Before2013;6 Alter DatabaseTestAddfilegroup T2013;7 Alter DatabaseTestAddfilegroup T2014;8 Alter DatabaseTestAddfilegroup After20

Way One:ALTER Proc [dbo].[Usp_rpt_accttypeaudit]@FromDate datetime=NULL,--Yyyy-mm-dd ( may change in the future!)@ToDate datetime=NULL,--Yyyy-mm-dd ( may change in the future!)@UserID nvarchar( -)= ' All' asBEGIN

Basic knowledge: DDL (data definition language)Create object_nameAlter object_nameDrop object_name DCL (Data Control Language)Grant (Authorization) eg:grant select on dbo. Tstudent to PublicDeny (Deny) Eg:deny select,update on authors to

1, what is statistical informationThe following is an official description of the statistics:By default, if a column in the table does not have an index, SQL Server automatically creates statistics for that column. The query optimizer then evaluates

--Determine if the name of the view you want to create existsif exists (SELECT * from dbo.sysobjects WHERE id = object_id (N ' [dbo].[ View name] ') and OBJECTPROPERTY (ID, N ' isview ') = 1)--Delete ViewDrop view [dbo]. [View

The first step, Control Panel---Management tool---ODBC Data source---User DNS---Click Join, fill in the configuration and save according to the information of the connection data (one of which is "change the default database to", click and change to

A recent need to verify the "Android Terminal" Download data efficiency issues, which need to add test data to the SQLSERVER2008 databaseStep1: Defining related Database InformationStatic final String DRIVER =

What is the stopping mode of SQL Server? What are their differences?The following is how SQL Server is stopped. There are probably some of the following:1 , from SQL Server Configuration manager-->sql Server Service inside Stop SQL Server.650)

Long time no use of stored procedures, suddenly a use to find a lot of things to forget, wrote two. Easy access. Examples are very simple, convenient to view the structure, the use of parameters. SELECT * fromproduction.product;--1 Creating a

In short, that's it.Select Top * FROM (SELECT *, rowID = Row_number () over (order by XXX) from TB with (NOLOCK)) data where rowID > 0ORDER BY rowIDor write like this.SELECT * FROM (SELECT *, rowID = Row_number () over (order by XXX) from TB with

1. Install MySQL ODBC driver on SQL Server side2. Add MySQL to an ODBC data source (Control Panel \ All Control Panel items \ Administrative Tools)To add a configuration driver to a User DSN and System DSNNote: The character set must correspond to

Three common connection parsing for SQL Server databases: Here's an official explanation: The LEFT join returns all the records in the left table and the records in the right table that are equal to the join fields right Join Returns records that

--all tables without a primary keySelectName fromsysobjectswhereXtype='U' andId not inch(SelectI.parent_obj fromsysobjects iwhereI.xtype='PK' ) Order byName--total CPU Time-consuming query planSELECT TOP 5Total_worker_time, Last_worker_time,

In the database development process, we often encounter the situation to traverse the data table, a reference to traverse the table, our first impression may think of the use of cursors, although the use of cursors is intuitive, but it does not

A variable is a user-defined, assignable, and participating entity in Transact-SQL, which can be divided into global variables and local variables in two categories. Where global variables are customized and maintained by the system, global variable

Network-related or instance-specific errors occur when you establish a connection with SQL Server. Unable to find or access the server, sqlserver When I started the system this morning, I found that I could not log on to the database when I opened

Required SQL statements (7) string functions, time functions, and SQL statements String Functions 1. case-insensitive Conversion-- Convert upper to uppercase-- Lower to lowercaseSelect upper ('asar ') 2. Length-- Len words-- Datalength bytes 3.

SQL Server cannot enable default database login failure error 4064 solution, sqlserver4064 The default database cannot be opened. logon fails because the default database of the Logon account is deleted.The solution is to use the Administrator

Required SQL statement (2) create a table, modify the table structure, and delete a table. 1. Create a database table -- Which database is used? If this statement is left blank, It is the default database, you can also select the current database

Required SQL statement (3) data insertion and SQL statement 1. Small specifications for using insert statements 1) it is best to add N before a Chinese String2) The column name is expanded with brackets like this [column name] 2. Conventional