mofcomp "C:\Program Files (x86)\Microsoft SQL Server\100\Shared\sqlmgmproviderxpsp2up.mof"

Sql Server Error :

Cannot connect to WMI provider. You do not have permission or the server is unreachable. Note that you can only manage SQL Server 2005 servers with SQL Server Configuration Manager. The specified module could not be found. [0x8007007e]

Solution :

 

Start ==> Run => Type below command  

 mofcomp "C:\Program Files (x86)\Microsoft SQL Server\100\Shared\sqlmgmproviderxpsp2up.mof"

Thanks

Reset Identity Value Using Sql Query

Reset Identity Value Using Sql  Query 

DBCC CHECKIDENT('UserTable' , RESEED, 0)

Database Go Online and OFFline using Query

Database GO Online:

ALTER DATABASE DBTest2 SET ONLINE

Database Go Offline

 

ALTER DATABASE DBTest2 SET OFFLINE

Add / REMOVE Primary Key to existing table

CREATE TABLE WITHOUT PRIMARY KEY

CREATE TABLE JSSTUDTABLE (SNO NUMERIC(10) NOT NULL)

ADD PRIMARY KEY EXISTING TABLE

ALTER TABLE JSSTUDTABLE ADD  PRIMARY KEY (SNO);

REMOVE PRIMARY KEY EXISTING TABLE 

ALTER TABLE JSSTUDTABLE DROP  constraint  PK__JSSTUDTA__CA1EE06C63D8CE75

“ COALESCE “ Method in Sql Server

 “ COALESCE “  Method in Sql Server

Table Have so many column like that

Name	HomeAddress	OfficeAddress	Temp_Address
Suthahar	Null	Null	Pudukkottai
Suresh	Pullanviduthi	Null	Null
Sumathi	Null	Alangudi	Null
Sujatha	Pullanviduthi	Pudukkottai	Trichy

If someone have home address or office address suppose if you display available first record means you can use coalesce method

CREATE TABLE devenvexe(Name  nvarchar(10),homeaddress nvarchar(10),officeaddress nvarchar(10), Temp_addressnvarchar(10))

Query :

SELECT name,COALESCE(homeaddree,officeaddress,temp_address) Addreess FROM devenvexe

Output:

Name	Address
Sutahhar	Pudukkottai
Suresh	Pullanviduthi
Sumathi	Alangudi
Sujatha	Pullanviduthi

Concatinate Column in Single Column

CREATE TABLE JS(SNAME NVARCHAR(10))

INSERT INTO JS VALUES('SUTHAHAR')

INSERT INTO JS VALUES('SURESH')

INSERT INTO JS VALUES('SUMATHI')

INSERT INTO JS VALUES('SUJATHA')

DECLARE @VAL NVARCHAR(1024)

SELECT @VAL=COALESCE(@VAL+',', '')+ SNAME FROM JS

SELECT JS= @VAL

Output:

Suthahar,Suresh,Sumathi,Sujatha

View in Sql Server

View in Sql Server

• ·        View is a virtual table
• ·        It s contains columns and data in different table
• ·        View does not contain any data directly. Its a set of select query

Table 1 Sno Sname

Table 2 Sno Lname

                              

View_table1_table2 Sname Lname

Above drawing table 1 and table we will write join query after we can create view

Syntax

CREATE VIEW JS_VIEW_NAME

AS

[SELECT STATEMENT]

Why we are use View ?

·        View is used for security mechanism .if you restricted particular column for users .

Sql Server Syntex for View

CREATE VIEW

CREATE VIEW JS_VIEW

AS

SELECT *FROM STUD A,LIB L WHERE A.SNO=L.SON

ALTER VIEW

ALTER VIEW JS_VIEW

AS

SELECT *FROM STUDENTTABLE  A,LIB L WHERE A.SNO=L.SON

SELECT VIEW

SELECT*FROM JS_VIEW

DROP VIEW:

DROP VIEW JS_VIEW        

Trigger Interview Questions

How many types of triggers are there in Sql Server 2005?
There are two types of triggers
• Data Manipulation language (DML) triggers
• Data Definition language (DDL) triggers
DML triggers (implementation) will run when INSERT, UPDATE, or DELETE statements modify data in a specified table or view.
DDL triggers will run in response to DDL events that occur on the server such as creating, altering, or dropping an object, are used for database administration tasks
What are the different modes of firing triggers?
After Trigger: An AFTER trigger fires after SQL Server completes all actions successfully
Instead of Triggers: An INSTEAD OF trigger causes SQL Server to execute the code in the trigger instead of the operation that caused the trigger to fire.