sql server column level encryption

SQL Server Audit (Audit)--Create a database-level auditTask 1: Create an auditStep 1 : open SSMs, log on to the specified instance, expand the "Security", "audits" node.Step 2 : on the audits node, right-select the "New Audit ..." option.Step 3 : in the "Create Audit" window, enter the following parameters.? Enter Audit-adventureworks2012-create/alter/drop in "Au

One of the ways to solve the confusion of concurrent database reading is to use transactions for operations and set the corresponding transaction isolation level. Now let's explain the four isolation levels of SQL Server. SQL ServerFour isolation-level knowledge points are o

The data table contains a column of data, as shown in 1: Figure 1 data table Now we need to divide the data in this column into three columns. The SQL code is as follows: 1, SelectMax (case when F1 % 3 = 1 then F1 else 0 end),Max (case when F1 % 3 = 2 then F1 else 0 end) B,Max (case when F1 % 3 = 0 then F1 else 0 end) cFrom hlr151Group by (F1-1)/3 Effect:

Http://www.c-sharpcorner.com/UploadFile/sd_patel/EnterNullValuesForDateTime11222005015742AM/EnterNullValuesForDateTime.aspx Intrby Sushila Patel September 26,200 3 Inserting a null value to the datetime field in SQL Server is one of the most common issues giving various errors. even if one enters null values the value in the database is some default value as 1/1/1900 12:00:00 AM. Oduction: Inserting a null

The operation code for XML columns in SQLServerTable. For more information, see. The operation code of XML columns in SQL Server Table. For more information, see. The Code is as follows: -- Create a test table DECLARE @ Users TABLE ( Id int identity (1, 1 ), UserInfo XML ) --- Insert Test Data DECLARE @ xml XML SET @ xml =' 1 Test1 ' Insert into @ Users (UserInfo

The original planning number field is text. Format without changing the type SUM (CAST (number As Integer)) Instance code: The code is as follows Copy Code Msql= "Select SUM (CAST (field name as Integer)" from table name where conditional language name "Mrs.open msql,conn,1,3Response.Write MRs (0)Mrs.closeSet mrs=nothing%> Here are some numbers to sum Use the sum (SUM) functionThe SUM function is used to return all the values in an expression A few not

Server contains two parts of the content:Query keys, such as last name-name-middle section, are called index keys in the vocabulary of SQL Server.Label, which provides the same content, that is the phone number, and SQL Server directly points to the data row represented by the key.In addition, a

firstDeclaretrans_id Varchar2 (100);Begintrans_id: = dbms_transaction.local_transaction_id (TRUE);End--View Transaction ISOLATION LEVELSELECT S.sid, s.serial#,Case Bitand (T.flag, POWER (2, 28))When 0 Then ' READ COMMITTED 'ELSE ' SERIALIZABLE 'END as Isolation_levelFrom V$transaction tJOIN v$session s on t.addr = s.taddr and S.sid = Sys_context (' USERENV ', ' Sid ');SQL ServerThe default system transaction isolation

Label:InstanceMD5 Encryption "123456": Hashbytes (' MD5 ', ' 123456 ') Result: 0xe10adc3949ba59abbe56e057f20f883e (hint: After the end, the result is converted. ） Function Function Describe return value Hashbytes Hashbytes (' encryption method ', ' value to encrypt ')Encryption mode = MD2 | MD4 | MD5 | SHA | SHA1

Save the SQL Server Default trace file for more than half a year based on the level of protection Project SQL Server audit requirements. Solution Solutionsfor users, Default Trace you can only turn off or turn on the trace, and you cannot modify any parameters. Therefore, we

SELECTTable name= Case whenA.colorder=1 ThenD.nameElse "' End, table describes= Case whenA.colorder=1 Then IsNull(F.value,"')Else "' End, Field ordinal=a.colorder, field name=a.name, Logo= Case when ColumnProperty(A.id,a.name,'isidentity')=1 Then '√'Else "' End, PRIMARY key= Case when exists(SELECT 1 fromsysobjectswhereXtype='PK' andParent_obj=a.ID andNameinch ( SELECTName fromsysindexesWHEREIndidinch(SELECTIndid fromSysindexkeysWHEREId=a.ID andColid=A.colid))) T

CREATE PROCEDURE [dbo]. [DXD_MX]@dxd_id VARCHAR (120) = "AsBEGIN--set Nocount ONDECLARE @sql1 NVARCHAR (4000)SET @sql1 = ' SELECT * FROM (select Row_number () over (order by T1.N ASC) as m1,* from (select Row_number () over (Order by ID DESC) as N, id,dxd_id, Yqs,yhs,guanghao from Lxcy_dxd_mx_v WHERE dxd_id= "" [email protected]_id+ ' or dxd_id= ') T1 WHE RE nLeft JOIN(select Row_number () over (order by T2.N ASC) as m2,* from (select Row_number () over (order by ID DESC) as N, id,dxd_id, YQ S,y

CREATE table TB (name varchar (10), course varchar (10), fractional int)INSERT into TB values (' Zhang San ', ' language ', 74)INSERT into TB values (' Zhang San ', ' math ', 83)INSERT into TB values (' Zhang San ', ' physical ', 93)INSERT into TB values (' John Doe ', ' language ', 74)INSERT into TB values (' John Doe ', ' math ', 84)INSERT into TB values (' John Doe ', ' physical ', 94)GoSELECT * FROM TBDROP table TBSelect Name,Max (case course when ' language ' then score else 0 end) language

Create DATABASE Inter_transformationGoCREATE TABLE Tb(Uname varchar (30),Course varchar (30),fraction int)GoINSERT into TB values (' Zhang San ', ' language ', 74)INSERT into TB values (' Zhang San ', ' math ', 83)INSERT into TB values (' Zhang San ', ' physical ', 93)INSERT into TB values (' John Doe ', ' language ', 74)INSERT into TB values (' John Doe ', ' math ', 84)INSERT into TB values (' John Doe ', ' physical ', 94)INSERT into TB values (' Harry ', ' language ', null)INSERT into TB value

Label:CREATE TABLE #tp(Headerno VARCHAR (10),Machineno VARCHAR (10),Descrption NVARCHAR (20),Artno VARCHAR (20),Qty INT,Repartno varchar (20),Repqty INT) INSERT INTO #tp SELECT ' HD01 ', ' 0101520 ', N ' battery problem ', ' 102020 ', 2, ' 102020 ', 2INSERT INTO #tp SELECT ' HD01 ', ' 0101520 ', N ' battery problem ', ' 101010 ', 2, ' 202020 ', 2INSERT INTO #tp SELECT ' HD01 ', ' 0101520 ', N ' battery problem ', ' 126888 ', 2, ' 102020 ', 2INSERT INTO #tp SELECT ' HD02 ', ' 01012221 ', N ' d mo

For example, there are two columns of data in the table:ID Name1 A1 b1 c2 D2 Einto the following format:ID Name1 a,b,c2 D,eData:if object_id(#表) is not NULL Drop Table#表SelectDid,name, from#表Order by didDrop Table#表Select theNid'AAA'Name1Did into#表Union AllSelect the,'BBB',1 Union AllSelect the,'CCC',1 Union AllSelect the,'DDD',2 Union AllSelect -,'Eee',2The implementation code is as follows:--recursively computes multiple rows into a single field--Method 1; withx (did, CNT, list, nid

Source: http://untitled.spaces.live.com/Blog/cns! 86b82838704e0d5a! 819. Entry Transaction isolation level is a basic concept in a database. Why is there a transaction isolation level? What transaction isolation levels are implemented on SQL server? The premise of transaction isolation