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SQL Server obtains all column names in the temporary table or whether the specified column name exists. SQL Server column names Retrieve all colum
SQL Server encryption and SQL Server encryption Encryption in SQL Server is hierarchical, and e
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)
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
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
@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
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
have a corresponding decryption algorithm, the data becomes meaningless.To SQL Server2005, column-level encryption was introduced. Enables encryption to be performed on a specific column, involving 4 of built-in functions for encryption
have a corresponding decryption algorithm, the data becomes meaningless.To SQL Server2005, column-level encryption was introduced. Enables encryption to be performed on a specific column, involving 4 of built-in functions for encryption
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-
(1) data to TableA ORDER by id DESC) End Go When the above 1-6-step script is executed, we query the system view Sys.sql_modules to see the defined information before it is unencrypted: Copy Code code as follows: Select B.name as Object,b.type,a.definition From Sys.sql_modules A INNER JOIN sys.objects B on b.object_id=a.object_id where B.create_date>=convert (Date,getdate ()) ORDER BY b.object_id Encryption
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
New Features of SQL Server 2014 (4)-native backup encryption, sql2014 After SQL Server 2014 CTP2, a feature for backup was published, that is, native backup encryption. Considering the previous database leaks that have had a bad i
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