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Tuesday, 9 December 2014

Blank page in SSRS

In SSRS some times we are facing the problem of blank pages and so many times it will became night mare to fix this issue.

Reason: Whenever we are hiding the rows or columns in SSRS it will take the blank space for the hidden row.

Solution: Now there are two solution for this problem.
  1. Give the minimum possible width to the row or minimum possible height to the column. This is not a better way to fix this problem.
  2. To fix this problem in a better way you can set the ConsumeContainerWhitespace = True in reports property.


Thx,
RS

Tuesday, 25 November 2014

How to find nth highest salary

In this post I will explain how to get the nth highest salary for an employee in different ways. I have below record present in my employee table.

So first is the quite straight forward query


Now second we go with the sub query so that we can find nth salary as well.


So this query you can use to get the nth salary also, for that you have to change the number 2 from TOP 2 salary

Now third we can get the nth highest salary using co-related query as well.



Note: This query will not work with the duplicate salary.

Now we can use cte (common table expression) also for this.



This query will also not work with the duplicate salary. If you want to use the CTE for duplicate salary as well then you have to use the dense rank instead of Rank.




In the above query if you want to get the nth salary then you can change the number 2 with any number.

Thx,
RS

Monday, 15 September 2014

SQL-Server : Find value of a column in entire database

Some times we need to find one column is present in how many tables with the same value. For example I have employee database. In this empid column is present in 7 table. Now I want to check empid 101 is present in how many table. This we can find with below stored procedure.

CREATE PROCEDURE GetColumnValueInDatabase 
        @value VARCHAR(max--value which we want to search
       ,@searchColumn VARCHAR(250)--specify the column name for which we need to search the value
AS
BEGIN
       DECLARE @qry VARCHAR(max)
       DECLARE @tabl TABLE (
              table_name VARCHAR(350)
              ,columnname VARCHAR(350)
              ,isprocessed BIT
              ,tableschema VARCHAR(5)
              )
       DECLARE @tabl_1 TABLE (
              table_name VARCHAR(350)
              ,columnname VARCHAR(350)
              )

       INSERT INTO @tabl
       SELECT tbls.TABLE_NAME
              ,cols.COLUMN_NAME
              ,0
              ,tbls.TABLE_SCHEMA
       FROM INFORMATION_SCHEMA.TABLES AS tbls
       JOIN INFORMATION_SCHEMA.COLUMNS AS cols ON tbls.TABLE_NAME = cols.TABLE_NAME
       WHERE cols.COLUMN_NAME = @searchColumn

       DECLARE @table_name VARCHAR(350)
              ,@columnname VARCHAR(350)
              ,@tblSchema VARCHAR(5)

       WHILE EXISTS (
                     SELECT 1
                     FROM @tabl
                     WHERE isprocessed = 0
                     )
       BEGIN
              SELECT TOP 1 @table_name = table_name
                     ,@columnname = columnname
                     ,@tblSchema = tableschema
              FROM @tabl
              WHERE isprocessed = 0
              ORDER BY table_name DESC

              SET @qry = 'SELECT ''' + @table_name + ''', ''' + @columnname + ''' FROM ' + @tblSchema + '.' + @table_name + ' where ' + @columnname + ' = ' + @value

              PRINT (@qry)

              INSERT @tabl_1
              EXEC (@qry)

              UPDATE @tabl
              SET isprocessed = 1
              WHERE table_name = @table_name
                     AND columnname = @columnname
       END

       SELECT *
       FROM @tabl_1
END


Example

EXEC GetColumnValueInDatabase 101,'empid'

Thx,
RS

Sunday, 14 September 2014

SQL Server - Enabling Service Broker

In this post I will cover to enable the service broker id and solution of some error related to this.

With the help of below query we can see what is the service broker id of database and whether it is enabled or not.

SELECT
    is_broker_enabled AS IsServiceBrokerEnabled,
    service_broker_guid AS ServiceBrokerGUID,
    name AS DatabaseName,
    database_id AS DatabaseId

FROM sys.databases

In below screen shot highlighted row shows that service borker is not enabled for the database TestDatabase.


We can enable the service broker queue with the help of below query

ALTER DATABASE Database_Name SET ENABLE_BROKER;

If you have database which is huge in size then above query may take time. In that case you can use the below query.

ALTER DATABASE Database_Name SET ENABLE_BROKER WITH ROLLBACK IMMEDIATE;

Now, some time we are getting the error 

Msg 9772, Level 16, State 1, Line 1 
The Service Broker in database "Database_Name" cannot be enabled because there is already an enabled Service Broker with the same ID.



This error is coming because there is already one database which is having the same service broker id and system is trying to enable another database with the same service broker id. The solution of this error is to generate the new service broker id for the database. This we can achieve with below query

ALTER DATABASE Database_Name SET NEW_BROKER;

If you have database which is huge in size then above query may take time. In that case you can use the below query.

ALTER DATABASE [Database_name] SET NEW_BROKER WITH ROLLBACK IMMEDIATE;

Thx,
RS


Thursday, 31 July 2014

How to Identify port number of SQL server

Hi, 

With the help of below query we can check the port number of sql server


select
 distinct local_net_address,
 local_tcp_port
from
 sys.dm_exec_connections
where

 local_net_address is not null

Thx, 
RS

Monday, 14 July 2014

how to check the dependencies of an object in SQL Server

Hi All,

This video will demonstrate you how to check the dependencies of an object.


Thx,
RS

Tuesday, 27 May 2014

How to rename an existing column using sp_rename

In this video I am showing how to rename an existing column using sp_rename.


Thx,
RS