sql server column level encryption

Table-level constraints and column-level constraints in SQL, in SQL Server, (1) The constraint of the base table is divided into column and table constraints constraints are the range

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:The teammate gave me the statement to modify the data. Always fails to execute. I wonder. For example:Look carefully at this column, and there is nothing special. such as:But it does have a constraint: ' df__his_drug___all_i__04e4bc85 '. Why do we have this constraint???When I finally searched this article, I understood. Because the column ' All_inventory_state ' is assigned a default value when it is

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

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

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

Reference documents:Elaborate on encryption in SQL ServerTransparent Data Encryption (TDE)Database encryption Key (DEK) managementIntroduction to encryption in SQL ServerIn SQL Server20

specifications.SQL Server uses the encryption key hierarchy, as shown in 8.1, to encrypt and protect the keys that you store in the databaseFigure 8.1 Encryption Key hierarchyAt the server level, each DB instance has a service Master key that is used to encrypt low

Label:Are basic examples, more reference official documentation: 1. Transact-SQL functions2. Database key3. Certificates4. Asymmetric key5. Symmetric key -- drop table enrypttest CREATE table Enrypttest ( ID int not NULL PRIMARY key, enryptdata nvarchar ( ), insert into enrypttest values (1,n ' 888888 '), (2,n ' 888888 '), (3,n ' 123456 '), (4,n ' A '); SELECT * from Enrypttest; "Transact-SQL functi

@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

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

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