sql server rename column

UNION All SELECTN'Zhang San'N'English', -GOSELECT * from [Testrows2columns](Figure 2: Sample Data)(b) First, a static way to achieve row to column, the effect of 3 is shown:--1: Static splicing row to columnSELECT [UserName],SUM( Case [Subject] when 'Mathematics' Then [Source] ELSE 0 END) as '[Mathematics]',SUM( Case [Subject] when 'English' Then [Source] ELSE 0 END) as '[English]',SUM( Case [Subject] when 'language' Then [Source] ELSE 0

UNION All SELECTN'Zhang San'N'English', -GOSELECT * from [Testrows2columns](Figure 2: Sample Data)(b) First, a static way to achieve row to column, the effect of 3 is shown:--1: Static splicing row to columnSELECT [UserName],SUM( Case [Subject] when 'Mathematics' Then [Source] ELSE 0 END) as '[Mathematics]',SUM( Case [Subject] when 'English' Then [Source] ELSE 0 END) as '[English]',SUM( Case [Subject] when 'language' Then [Source] ELSE 0

) SELECT @sql =isnull (@ Sql+ ', ', ') + course from TB GROUP by course SET @sql = ' SELECT * from TB pivot (MAX (score) for course in (' [email protected]+ ')) a ' exec (@sql) The results of the row and column are combined with the total score, t

' English ', 100 GO SELECT * FROM [Testrows2columns] (Figure 2: Sample Data) (b) First, a static way to achieve row to column, the effect of 3 is shown: --1: Static splicing row to column SELECT [UserName], SUM (case [Subject] when ' math ' then [Source] ELSE 0 END) as ' [Math] ', SUM (case [Subject] when ' English ' then [Source] ELSE 0 END)

Original link: http://www.cnblogs.com/Ryan_j/archive/2011/04/03/2004428.htmlRenaming a database is simple, select the database-right--Rename the databaseOr' olddb ',' newdb 'But if you create a new database with the same name, you will get an error indicating that the database already exists.For example, after the test database is renamed to Test1, a new database named Test will receive an error that already exists in the test database.To the

Tags: style blog http use file dataA case that requires renaming a database in multiuser mode has recently been encountered, because the database may be used by other users, so direct modification may fail. In this case, we can wait until all users have finished using the database, or switch the database to single-user mode.Sometimes, we need to take the production environment database to the development environment directly to test the development process. We can

The first problem is renaming the database: You cannot rename the database directly in Enterprise Manager, you can only manipulate it in Query Analyzer Copy Code code as follows: Create proc killspid (@dbname varchar (20)) As Begin declare @sql nvarchar (+), @temp varchar (1000) DECLARE @spid int Set @sql = ' Declare getspid cursor for Select s

Tags: Time characteristics Law object_id LTE Eric modify alter typeOriginal: Use SQL statement to create a modified SQL Server identity column (that is, autogrow column)I. Definition and characteristics of the identity columnThe identity

Label:I. Definition and characteristics of the identity columnThe identity column in SQL Server is also called the identifier column, which is also known as the self-increment column.This type of column has the following three characteristics:1. The data type of the

Tags: command col dbi SQL application MSS User Access server ASEThe use of MSSQL when learning ASP. ' Often this error, the database can not duplicate name 5030 error, in fact, the simple reason is that there is an application is occupying this connection, using such a line of command can query out the occupied connection Use Master Select from where dbid=db_id('odatabasename'The result of the executio

@sql = ' Select * FROM TB Pivot (MAX (score) for course in (' [email protected]+ ')) a ' EXEC (@sql)The results of the row and column are combined with the total score, the average1. Using SQL Server 2000 static SQLSELECT name, Max (case course when ' language ' then score

Http://blog.csdn.net/xys_777/archive/2010/06/22/5685953.aspx Summary of Row-to-column conversion problems-1. Row-to-column conversion (various problems in the forum will be sorted out later) --- 1. Simplest row-to-column Conversion/* Question: Suppose there is a student orders table (TB) as follows:Name course scoreZhang San Language 74James math 83Zhang San phys

Label:SQL Server dynamic row to column (parameterized table name, grouping column, row to column field, field value)2014-05-26 16:09 by listening to the wind blowing rain, 26798 reading, 50 Reviews, Favorites, compilation I. What is covered in this article (Contents) What is covered in this article (Contents

Pivot is used to rotate column values to column names (row to column)Grammar:Table_sourcepivot (Aggregation function (value_column) for Pivot_columnin (Unpivot used to set the column value to a column (that is, a column change)Gra

Summary of Row-to-column conversion problems-1. Row-to-column conversion (various problems in the forum will be sorted out later) --- 1. Simplest row-to-column Conversion/* Question: Suppose there is a student orders table (TB) as follows:Name course scoreZhang San Language 74James math 83Zhang San physical 93Li Si language 74Li Si mathematics 84Li Si physical 94

Summary of Row-to-column conversion problems-1. Row-to-column conversion (various problems in the forum will be sorted out later) --- 1. Simplest row-to-column Conversion/* Question: Suppose there is a student orders table (TB) as follows:Name course scoreZhang San Language 74James math 83Zhang San physical 93Li Si language 74Li Si mathematics 84Li Si physical 94

An identity column in SqlServer2012 has an attribute:When the server restarts, the identity column defined as int automatically adds 1000 to the original maximum value. For example, your original self-increment column of the maximum value is 2, then you restart after inserting a piece of data into the table, your self-

primarily queried from the middle table, and the following versions of SQL SERVER2005 can be done using aggregate functions.2.1 Row to column syntaxTable_source PIVOT ( aggregate function (value_column) for pivot_column in ( column_list>) )2.2, using pivot to achieve withT as ( SELECT 1 asId'Test Team 1'TEAM,' Men'ITEM, theCENTUNION SELECT 1 asId'Test Team 1'TEAM,'Women'ITEM, -CENTUNION SE

Label:CREATE TABLE Test(Department varchar (10),Customer varchar (10),Cost name varchar (10),Amount int)INSERT into test values (' A ', ' a ', ' phone fee ', 10)INSERT into test values (' A ', ' a ', ' run at public expense ', 11)INSERT into test values (' A ', ' a ', ' Bus fee ', 9)INSERT into test values (' A ', ' B ', ' phone fee ', 10)INSERT into test values (' A ', ' B ', ' public expense ', 10)INSERT into test values (' A ', ' C ', ' Bus fee ', 10)INSERT into test values (' B ', ' d ', ' p