Skip to main content

Check If Database object exists(DB,Table,View,SP,Index,Trigger,Key etc.)

Many time we need to check if object exists or not in SQL server when we create new objcet(i.e. DB,Table,View,SP,Functions etc).

There are certain situation when if particular object exist then drop/modify else Create.
Because we need to run script again and again on same DB to avoid any existance error we use check if exists object.

For such cases here i am writing Check if exist query for DB objects.....

----Check If Database Exists----

IF db_id('<DB_Name>') IS NOT NULL
    Print 'Database Exists'
ELSE
    Print 'Database Does Not Exists'

----Check If Table Exists----

IF OBJECT_ID ('<Table_Name>','U') IS NOT NULL
    Print 'Table Exists'
ELSE
    Print 'Table Does Not Exists'


----Check If SP Exists----

IF EXISTS (SELECT * FROM sysobjects WHERE id =  object_id (N'<SP_Name>') AND OBJECTPROPERTY(id, N'IsProcedure') = 1)
    Print 'SP Exists'
ELSE
    Print 'SP Does Not Exists'


----Check If View Exists----
IF EXISTS (Select * From dbo.sysobjects Where id =
Object_ID('<View_name>') and OBJECTPROPERTY(id, N'IsView') = 1)
    PRINT 'View Exists'
ELSE
    PRINT 'View Does Not Exists'

----Check If Function Exists----

IF OBJECT_ID(N'<Function_Name>', N'FN') IS NOT NULL
    Print 'Function Exists'
Else
    Print 'Function Does Not Exists'


----Check If Foreign Key Exists----

IF EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'<ForiegnKey_name>')
AND parent_object_id = OBJECT_ID(N'<Table_name>'))
      Print 'Foreign Key Exists'
Else
      Print 'Foreign Key Does Not Exists'


----Check If Primary Key Exists----

IF OBJECTPROPERTY( OBJECT_ID( '<Table_name>' ), 'TableHasPrimaryKey' ) = 1   
    PRINT 'Table has a primary key.'
ELSE   
    PRINT 'Table has no primary key.'

----Check If Trigger Exists----

IF EXISTS (Select * From dbo.sysobjects Where name ='<Trigger_Name>' And type ='TR')
    Print 'Trigger Exists' 
Else
    Print 'Trigger Does Not Exists'


----Check If Index Exists----

IF EXISTS (Select * From sysindexes Where id=object_id('<Table_name>') And name='<Index_name>')
    Print 'Index Exists'
Else
    Print 'Index Does Not Exists'


----Check If Column Exists in a table----

IF EXISTS(SELECT * FROM sys.columns Where Name = N'Column_Name' AND Object_ID = Object_ID(N'table_name'))
BEGIN
   Print 'Column Already Exists'
  
END
ELSE
BEGIN
   Print 'Column Not Exists'
END


Cheers Guys!!!!!!!!!!
Sandyyy.. :)

Popular posts from this blog

C#: Merging Excel cells with NPOI HSSFWorkbook

In this post we’ll see how to merge the two or more cell with each other while creating the excel sheet using NPOI.
Mentioned below is code to merge multiple cells, in this example we are merging first cell to fifth cell of first row (you can adjust row or cell range by passing particular parameters in CellRangeAddress).
//Created new Workbook var hwb = new NPOI.HSSF.UserModel.HSSFWorkbook(); //Create worksheet with name. var sheet = hwb.CreateSheet("new sheet"); //Create row and cell. var row = sheet.CreateRow(0); var cell = row.CreateCell(0); ; //Set text inside cell cell.SetCellValue("This is Merged cell"); cell.CellStyle.WrapText = true; //define cell range address // parameters: -> first row to last and first cell to last cell var cra = new NPOI.SS.Util.CellRangeAddress(0, 0, 0, 4); //Add merged region to sheet. sheet.AddMergedRegion(cra);
Hope this solution helps you J

Difference between Web API, WCF and Web Service

So now we have got the basic idea about Web API, now let’s do some comparison of Web API with WCF and web services.
Web Service WCF Web API Web services created as file with .asmx extension. WCF create with .svc extension Web API are simple class file with .cs(for C#) extension. Web API is inherited from “ApiController” and class name must end with “Controller”. It is SOAP based service and return data in XML form. It is also based on SOAP and return data in XML form. Web API is HTTP based service and by default it return data in JSON or XML form. It supports only HTTP protocol. It supports various protocols like TCP, HTTP, HTTPS, Named Pipes, and MSMQ. It supports HTTP protocol. It can be hosted only on IIS. It can be hosted with in the application or on IIS or using window service. It can be hosted with in the application or on IIS. It is not open source but can be consumed by any client that understands xml. It is not open source but can be consumed by any client t…

Calculate Sum and average of two or more Textbox values using JQuery

We can calculate sum and average of values entered in textboxes with the help of small piece of jQuery code.
First of all let’s create a HTML form where we’ll ask user to enter marks in each subject, under body section add following HTML:
<tableclass="demo-table"> <trclass="label"> <tdcolspan="2">Please enter marks(0-99):</td> </tr> <tr> <td>English</td> <td> <inputtype="text"class="txtMarks"name="txtMarks"